CN201730579U - High-temperature resistant well control device for double-pipe operation in horizontal wells - Google Patents

Abstract

A high-temperature resistant well control device for double-pipe operation in horizontal wells is formed by connecting a high-temperature resistant blowout preventer for double-pipe operation in horizontal wells and a ground control device of the high-temperature resistant blowout preventer for double-pipe operation in horizontal wells. A suspension locking structure is mounted on the lower layer of a casing, a piston of the suspension locking structure is a combined piston formed by an inner suspension piston and an outer locking piston via series connection, a suspension oil opening joint, a suspension oil closing joint and an oil locking joint are respectively connected to one end of an elbow, the other end of the elbow is connected with one end of a high-pressure oil pipe via an union, the other end of the high-pressure oil pipe is connected and fixed on an oil port of the high-temperature resistant control device for double-pipe operation in horizontal wells via an union, the oil port corresponds to the other end of the high-pressure oil pipe, and oil channels of the control device are respectively connected with a blowout preventer suspension switch controlling reversing valve and a blowout preventer locking switch controlling reversing valve. During double-pipe trip operation in horizontal wells, strings can be suspended at wellheads quickly without being affected by adverse environment at the wellheads after operators find out overflow, and blank rams can be closed after a single string is detached, thereby realizing quick well shutdown. Further, the well control device is high-temperature resistant, and is a novel blowout preventer embedded with suspension locking slips and blank rams.

Description

High-temperature resistant well control device for double-pipe operation in horizontal wells

Technical field

The utility model is related to a kind of well control device of horizontal well operations, especially high-temperature resistant well control device for double-pipe operation in horizontal wells.

Background technology

At present, well control device is the visual plant of shaft mouth operation, and its well control device is interconnected to constitute by wellhead blowout preventor and control system of ground preventer；Preventer be it is a kind of because take precautions against gas blowout accident design, after well kick generation can safe closing well in time device, it is main by housing, switch valve plate hydraulic cylinder assembly, flashboard assembly, side door assembly, manual locking leading screw, oil inlet and oil return mouthful composition, it has blind rams structure, also there is half envelope flashboard structure, or the structure that blind rams and half envelope flashboard are combined, primary structure is, the flashboard cavity of its housing is in Long Circle in the longitudinal cross-section of vertical flashboard, side door is connected by side door bolt with housing in itself, cylinder cap, switch flashboard fluid cylinder, it is fixed together by fluid cylinder connecting bolt and side door, flashboard assembly hangs over switch flashboard liquid cylinder piston bar front end, two way seal is realized using y-shaped ring between side door and switch flashboard fluid cylinder；Sealing device between piston rod and side door is divided into two parts, a part is sealing well pressure, a part is to seal the oil pressure that hydraulic control is produced, sealing mechanism is located between this two department twice, generally, to make the sealing at this very reliable, there is the sealing ring of multiplet, and the auxiliary seal of middle O-ring seals, when hydraulic control system hydraulic oil, which enters left and right fluid cylinder flashboard, closes chamber, piston driving or so flashboard assembly is promoted to be moved respectively to well head center along housing flashboard chamber, realize shut-in well, when high pressure oil wells, which enter left and right fluid cylinder flashboard, opens chamber, piston driving or so flashboard assembly is promoted to be moved to well head center position is left, open well head, flashboard switch is controlled by hydraulic control system reversal valve；It is also known as ram preventer, it by sealing everywhere, well head can so be effectively sealed against, that is flashboard top sealing is tightly connected with housing, before flashboard sealing with pipe and preceding sealing being tightly connected each other, being tightly connected between housing and side door, being tightly connected between piston rod and side door, the sealing of flashboard is such, one is that packing unit crimp sealing is anterior before hydraulic oil effect lower piston rod promotes flashboard, push up between packing unit and housing at the top of interference compression seal, so as to realize initial sealing, two be when having pressure in well, well pressure seals further crimp before flashboard pushed aft flashboard, well pressure promotes flashboard floating to be adjacent to the sealing surface on housing from bottom simultaneously, so as to form reliable sealing；Flashboard assembly has certain gap with flashboard room, flashboard is allowed to be fluctuated in housing chamber, in order to ensure flashboard and well inner tube intercolumniation sealed reliable, there is mutually prominent guide pad the front end of flashboard, it can be inserted into the groove of opposite flashboard, so guide pad inclined-plane produces certain centripetal thrust force in the case that tubing string is not placed in the middle in well in closing well to well casing, tubing string in well is shifted to well head center；Control system of ground preventer is the visual plant for controlling wellhead blowout preventor, is made up of remote console and high-pressure oil pipe, and remote console connects preventer by high-pressure oil pipe, and control preventer is applied by the hydraulic oil in its high-pressure oil pipe；Remote console is made up of base, fuel tank, pump group, accumulator group, manifold, various valve members, instrument and electric cabinet, its major function is, high voltage control liquid is produced by pump group, and be stored in accumulator group, when needing open and close preventer, the high voltage control liquid from accumulator group is assigned in each control object (preventer) by the 3-position 4-way rotary valve of manifold；Its pump group is equipped with two sets of independent power sources, that is electric oil pump and hand oil pump, it is standby that accumulator group has enough highly pressurised liquids to store, meet the control requirement for closing whole preventer groups and the requirement for opening hydraulic operated valve, electric oil pump is controlled with automatic, the control device stopped, the open and close action of each preventer by corresponding 3-position 4-way rotary valve；There is standby pressure source interface on the control manifold of remote console, pressure source can be introduced as needed within；Hydraulic line has two kinds of hard tube line and soft pipeline, typically with soft pipeline, and the two ends of soft pipeline are the snap joint of self-sealing, realize the connection of remote console and preventer；Warning device is installed on remote console, to energy storage pressure, bleed pressure, the operating of oil tank liquid level and electric oil pump is monitored, when alarm limit of the above-mentioned parameter beyond setting, can on remote console to being spoken, visual alarm, indicate that operating personnel take measures, it can operate abnormal alarm in the low alarm of energy storage pressure, the low alarm of oil tank liquid level and electric oil pump；Electric cabinet is fixed on remote console, the electronic motivation of connection remote console is installed in the electric line of electric cabinet, motor connects oil pump, when the electro-motor is turning, oil pump is driven to rotate, by entering oil pipe, by the oil suction in fuel tank, and be forced through flowline and be transported in accumulator group, enter oil pipe one end to be fastened on fuel tank, the other end is fastened on oil pump oil inlet, flowline one end is fixedly connected on the oil-out of oil pump, the other end connects check valve inlet, one-way valved outlet connected pipes one end, it connects oil pipe other end connection accumulator group, so when oil pump is rotated, pressure oil is through check valve to accumulator group fuel feeding；Connection pressure controller is installed on electric cabinet, when system pressure reaches certain setting value, pressure controller automatically cuts off power supply, make electric oil pump fuel cut-off, when system pressure is depressured certain value, electric oil pump can reset automatically work, the pressure of accumulator group is so set to remain in certain scope, it is available for operation preventer to be turned on and off at any time, accumulator group installs isolating valve by oil pipe connection, overflow valve, reconnect control manifold, its manifold connects the oil inlet of 3-position 4-way rotary valve, as long as so pulling corresponding 3-position 4-way rotary valve handle, make "ON" can be achieved, the operation of "Off" preventer, so, the pressure oil being stored in accumulator group passes through accumulator isolation valve, oil filter, again after decompression overflow valve decompression, into control manifold, to each 3-position 4-way rotary valve oil inlet, 3-position 4-way rotary valve (liquid rotary valve) used on remote console is " O " type function, rotate valve handle " in " position when, each chamber is not communicated with, and when handle is in "ON" position formula "Off" position, as pressure oil enters one end of oil cylinder in preventer, the fluid of the other end makes through 3-position 4-way rotary valve oil return box；Accumulator group is generally the structure that multiple bladder type hydropneumatic accumulators interconnect, its bladder type hydropneumatic accumulator plays storage energy in hydraulic system, steady pressure, reduce power consumption, compensation leakage is oozed, a variety of effects such as absorption pressure pulsating force and mitigation impulsive force, it is supported on the bracket of remote console securely, it is by shell, capsule and charge valve and hydraulic fluid port composition, shell has charge valve on top, capsule in charge valve connection shell cavity, there is hydraulic fluid port shell lower end, in hydraulic fluid port insertion shell, insufflation gas in its capsule, usually nitrogen, composition accumulator group is combined in several bladder type hydropneumatic accumulator connections, its intracapsular nitrogen has certain pressure, when hydraulic oil is entered in shell by hydraulic fluid port, compress capsule, the air pressure of the nitrogen in capsule is set to increase, the pressure of its hydraulic oil rises to certain amplitude, conversely when using accumulator, due to the hydraulic oil in the High Voltage compressing shell in capsule, carrying oil necessarily has pressure, can by hydraulic fluid port outwardly against, pressure oil is transported to certain position by oil pipe, and electric oil pump is started working, its pressure oil is set to remain certain pressure, so as to control preventer；But with extensive use both at home and abroad to horizontal well technology, horizontal well turns into the important means in Efficient Development oil field under conditions present already；Along with being continuously increased for horizontal well quantity, horizontal well production technology reaches its maturity, still, and current horizontal well operation technique still in exploring, following up the stage, especially in terms of double-pipe operation well control technique, still continues to use the well control technique of straight well；Although developing some single technologies, technique is not matched, without ripe technology series, mostly using the conventional technique of straight well, long construction period, success rate is low, especially in the construction operation of SAGD wells and two-tube gas injection well, because shaft collar is complicated, tubing string configuration is special in well, and temperature in wellbore is higher, and bottom hole pressure difference changes greatly, ground well control facility and well control technique fall behind relatively, exist pit shaft scrap, the major safety risks such as blowout out of control；Horizontal well double-pipe operation is big compared with ordinary straight well operations well control risk, not only pit shaft rushes down pasta product greatly, yield is 2-5 times of straight well, and bottom hole pressure difference is larger, and the oil production method such as steam soak, steam become, SAGD, Double-pipe gas-injection determines that the bottom pressure of horizontal well is extremely unstable；Horizontal well double-pipe operation is difficult compared with ordinary straight well operations well control technique, and it is in changeable state that not only special casing programme, which causes one section of well control, need to take measures to keep bottom pressure balance and temperature in wellbore control at any time；Down-hole accident intractability is larger, does not allow at will to implement to throw away the action of pipe closing well；And special well head environment and the functional defect of existing well control device cause the closing well motion action speed of two grades of well controls slower, are easily to lead to blowout out of control.

The content of the invention

The purpose of this utility model is to provide a kind of high-temperature resistant well control device for double-pipe operation in horizontal wells, the device is realized in the two-tube rountrip of horizontal well, tubing string is quickly suspended on well head by the adverse environment (well head height, Jing Wengao) that operating personnel can successfully evade well head after overflow is found, unload single rear closing blind rams, implement the function of quick closing well, and high temperature resistant, it is the novel blowout preventer of a set of built-in suspension locking slips and blind rams (high temperature resistant).

What the purpose of this utility model was realized in：High-temperature resistant well control device for double-pipe operation in horizontal wells is interconnected to constitute by horizontal well double-pipe operation high temperature resistant preventer and horizontal well double-pipe operation high temperature resistant preventer ground control unit, horizontal well double-pipe operation high temperature resistant preventer be it is a kind of because take precautions against gas blowout accident design, after well kick generation can safe closing well in time device, horizontal well double-pipe operation high temperature resistant preventer is double ram type preventer structure, its center is main latus rectum structure, and left, each internal structure of right structure on two sides, specification is identical, is corresponded between each part of left side structure and each part of right side structure, its corresponding component shape, size, specification is identical, and left side structure is relatively symmetrically connected with right side structure with main latus rectum structure, and horizontal well double-pipe operation high temperature resistant preventer is by housing, port connection, full envelope cylinder head, full envelope cylinder tube, full envelope side door, blind rams, sealed before blind rams, top sealing, full envelope piston, blind rams locks screw mandrel, cylinder nut, hang locking cylinder bolt, latching ram assembly, hang piston assembly, slips assembly, slips side door, full envelope control cylinder bolt, side door bolt, the tight lock cylinder tube of suspension, locking cylinder cylinder head is hung to constitute；Upper strata is blind rams structure, and lower floor is suspension locking mechanism；There are suspension lock chambers in its lower floor, and there are blind rams chamber, built-in blind rams in built-in slips assembly, upper strata；Its upper strata is blind rams structure, it is main by housing layer shell flashboard chamber switch valve plate hydraulic cylinder assembly, flashboard assembly, manual locking leading screw, oil inlet and oil return mouthful composition, the upper strata left and right sides of housing has respectively to be communicated with the main latus rectum of casing center, and the main latus rectum of the heart is left wherein, right both sides, symmetrical shape and structure specification identical flashboard chamber, flashboard chamber is in Long Circle in vertical longitudinal cross-section, side door is connected by side door bolt with housing in itself, cylinder cap, switch flashboard fluid cylinder, it is fixed together by fluid cylinder connecting bolt and side door, flashboard assembly hangs over switch flashboard liquid cylinder piston bar front end, two way seal is realized using y-shaped ring between side door and switch flashboard fluid cylinder；Sealing device between piston rod and side door is divided into two parts, a part is sealing well pressure, a part is to seal the oil pressure that hydraulic control is produced, sealing mechanism is located between this two department twice, generally, to make the sealing at this very reliable, there is the sealing ring of multiplet, and the auxiliary seal of middle O-ring seals, when hydraulic control system hydraulic oil, which enters left and right fluid cylinder flashboard, closes chamber, piston driving or so flashboard assembly is promoted to be moved respectively to well head center along housing flashboard chamber, realize shut-in well, when high pressure oil wells, which enter left and right fluid cylinder flashboard, opens chamber, piston driving or so flashboard assembly is promoted to be moved to well head center position is left, open well head, flashboard switch is controlled by hydraulic control system reversal valve；When closing blind rams, it by sealing everywhere, well head can so be effectively sealed against, that is flashboard top sealing is tightly connected with housing, before flashboard sealing with pipe and preceding sealing being tightly connected each other, being tightly connected between housing and side door, being tightly connected between piston rod and side door, the sealing of flashboard is such, one is that packing unit crimp sealing is anterior before hydraulic oil effect lower piston rod promotes flashboard, push up between packing unit and housing at the top of interference compression seal, so as to realize initial sealing, two be when having pressure in well, well pressure seals further crimp before flashboard pushed aft flashboard, well pressure promotes flashboard floating to be adjacent to the sealing surface on housing from bottom simultaneously, so as to form reliable sealing；Flashboard assembly has certain gap with flashboard room, flashboard is allowed to be fluctuated in housing chamber, in order to ensure flashboard and well inner tube intercolumniation sealed reliable, there is mutually prominent guide pad the front end of flashboard, it can be inserted into the groove of opposite flashboard, so guide pad inclined-plane produces certain centripetal thrust force in the case that tubing string is not placed in the middle in well in closing well to well casing, tubing string in well is shifted to well head center；Horizontal well double-pipe operation high temperature resistant preventer lower floor is suspension locking mechanism, its structure is, the housing lower floor left and right sides has respectively to be communicated with the main latus rectum of housing, and the main latus rectum left and right sides of the heart is symmetrical wherein, shape and structure specification identical hangs lock chambers, being hung at it in lock chambers has suspension locking assembly, suspension locking piston assembly is totally made up of suspension piston assembly and latching ram, piston assembly is hung by suspension piston loop bar, piston, hang piston and spell tight nut, O-ring seal, Yx type axle sealing rings, bar V-arrangement presss from both sides fabric building rubber compound sealing ring, flush end holding screw of slotting is constituted；It is hollow circular-tube structure to hang piston loop bar, empty in it is hollow cylindrical structure, the center line of its hollow cylinder and the center line of pipe are on the same line, it is by top, main body, bottom is constituted, top top is pin thread structure, that is the fluted structure of top peripheral, its top is excrescence, on its excrescence, lower two sides is the plane being parallel to each other, the distance that its two plane arrives pipe center line respectively is equal, the distance between its two plane is more than the outer diameter of a circle of pipe main body, groove is structure of rising as high as the banks, the groove bottom of its groove is parallel with two planes of excrescence, the central axis of the two grooves side of its groove respectively with pipe, the distance between two groove bottoms are less than the overall diameter of pipe, the vertical range that two groove bottoms arrive pipe center line respectively is equal, there is recessed open slot on the perisporium mouthful on its top, its depth and width are set as needed, the groove bottom of its open slot is vertical with two planes of excrescence, and with its pipe central axis, its two groove side is vertical with groove bottom respectively, the internal diameter at top is more than the internal diameter of pipe, its its outer end side face of bottom for hanging piston loop bar is public screwed tooth structure, its the inner is cylindrical structure, the outer circumference diameter of its outer end public affairs screwed tooth structure is less than inner cylinder outer circumference diameter, its inner cylinder outer circumference diameter is less than the outer circumference diameter of main body again, Zhoukou City is with diameter greater than pipe interior diameter in its public screwed tooth structure；Suspension piston gets rid of tight nut for cyclic structure, the diameter of its inner peripheral surface is equal with the interior diameter for hanging piston loop bar main body, the center line of its inner peripheral surface and outer circumference surface is on the same line, it is planar annular outside its cyclic structure, the central axis of its planar annular and cyclic structure, its opposite side relative with planar annular is hollow toroid slot structure, the annular groove bottom of its hollow toroid slot structure is parallel with planar annular, its center line gets rid of the center line of tight nut on the same line with suspension piston, the diameter of the inner ring periphery of its annular groove and the equal diameters of Zhoukou City in the bottom of suspension piston loop bar, it is female screwed tooth structure on its outer shroud periphery, the external diameter of the outer peripheral face of the public screwed tooth structure of bottom of the diameter of its outer shroud periphery with hanging piston loop bar is equal, the female thread for making the male thread of suspension piston loop bar get rid of tight nut with suspension piston is mutually screwed up, in hollow toroid groove, the distance between outer shroud periphery is identical with the thickness of suspension piston loop bar bottom loop bar mouthful, connected between the inner peripheral surface of cyclic structure and the inner ring periphery of hollow toroid groove for planar annular, for internal spherical surface, also planar annular is connected between the outer circumferential surface of its cyclic structure and the outer shroud periphery of hollow toroid groove, for outer annular surface, and two annular connection planes are parallel to each other, and it is parallel with cyclic structure planar annular, the distance of its internal spherical surface to outer planar annular is less than outer annular surface to the distance of planar annular；Suspension piston, which is spelled, several flush end holding screw circular hole break-through of slotting between the planar annular and opposite side outer annular surface of tight nut, it is made up of interior mother rib lateral rotundum and outer mother rib lateral rotundum, the diameter with diameter greater than interior mother rib lateral rotundum of its outer mother rib lateral rotundum, fluting flush end holding screw is made up of screw cap and screw body, the diameter with diameter greater than screw body of its screw cap, the diameter of its interior mother rib lateral rotundum is identical with the diameter of screw body, the diameter of its outer mother rib lateral rotundum is identical with the overall diameter of screw cap, and the outer end of screw body is public screwed tooth structure；Suspension piston is annulus column construction, internal orifice plane is parallel to each other with collar extension plane, and with the central axis of annulus column construction, there are two hollow toroid grooves on the inner peripheral surface of its inner mouth plane side, that is rubber ring recess, the shape of two hollow toroid groove, size, depth, structure is identical, its center line is on the same line, and the center line of its center line and piston is on the same line, its collar extension plane inwardly has annular opening, its annular opening is formed by connecting by Li Kou faces and circumferential surface, its Li Kou face is parallel with collar extension face, and the center line in Li Kou faces and the center line in collar extension face are on the same line, interconnected between Li Kou faces and collar extension face by annular circumferential face, the center line of its ring-shaped periphery also with the center line of piston on the same line, with diameter greater than or equal to suspension piston get rid of the external diameter of tight nut in its annular circumferential face, if having fundatrix screw thread hole on its Li Kou face, the size of its screw thread hole, depth, structure is identical, and its center line is into being parallel to each other, with the centerline parallel of piston, distance to the center line of piston is equal, and it is corresponding with the holding screw circular hole quantity specifications that suspension piston is got rid of on tight nut, the distance that the holding screw circle hole centreline extremely suspension piston that the distance of the center line of female screw thread hole of piston to piston centreline is got rid of with suspension piston on tight nut gets rid of tight nut center line is equal；Its latching ram assembly is by latching ram bar, latching ram, latching ram gets rid of tight nut, O-ring, flush end holding screw of slotting is constituted, its latching ram bar is loop bar structure, by top, body, connect piston portion and outside composition, top, body is cylinder, its top outer diameter is more than the external diameter of body, its center line is on same straight line, connection piston portion is two parts, inside connects the cylindrical axis body of piston for set, external connection latching ram gets rid of the cylindrical thread body of tight nut, axis body connects with thread body phase, the diameter of its thread body is less than the diameter of axis body, and two center line on the same line, and with the center line of latching ram bar on the same line, its axis body other end is connected with body, its axis body diameter is less than the diameter of body, one end of the external cylindrical bar of thread body other end connection latching ram bar；Latching ram gets rid of tight nut for cirque structure, it is interior, outer peripheral face is periphery, two sides be parallel to each other and with the planar annular of cirque structure central axis, the center line of its inner peripheral surface and the center line of outer circumference surface are on the same line, it is screwed tooth structure on its inner peripheral surface, its interior diameter is identical with the overall diameter of loop bar thread body, and two the distance between plane it is identical with the thickness of thread body, male thread on thread body is mutually screwed up with female thread on inner peripheral surface, latching ram gets rid of some circular holes for having its two plane of break-through between two planes of tight nut, the center line of its some circular hole is parallel to each other, and the centerline parallel of tight nut is got rid of with latching ram, the circular hole that latching ram is spelled between two planar annulars of tight nut is referred to as flush end holding screw circular hole of slotting, it is made up of interior mother rib lateral rotundum and outer mother rib lateral rotundum, the diameter with diameter greater than interior mother rib lateral rotundum of its outer mother rib lateral rotundum, fluting flush end holding screw is made up of screw cap and screw body, the diameter with diameter greater than screw body of its screw cap, the diameter of its interior mother rib lateral rotundum is identical with the diameter of screw body, the diameter of its outer mother rib lateral rotundum is identical with the overall diameter of screw cap, the outer end of screw body is public screwed tooth structure；Latching ram is annulus column construction, internal orifice plane is parallel to each other with collar extension plane, and with the central axis of annulus column construction, there are two hollow toroid grooves on the inner peripheral surface of its inner mouth plane side, that is rubber ring recess, the shape of two hollow toroid groove, size, depth, structure is identical, its center line is on the same line, and the center line of its center line and piston is on the same line, its collar extension plane inwardly has annular opening, its annular opening is formed by connecting by Li Kou faces and circumferential surface, its Li Kou face is parallel with collar extension face, and in mouth center line and collar extension face center line on the same line, interconnected between Li Kou faces and collar extension face by ring-shaped periphery, the internal diameter in its annular circumferential face gets rid of the external diameter of tight nut more than or equal to latching ram, the center line of its ring-shaped periphery also with the center line of piston on the same line, if having fundatrix screw thread hole on its Li Kou face, the size of its screw thread hole, depth, structure is identical, and its center line is into being parallel to each other, with the centerline parallel of piston, distance to the center line of piston is equal, and it is corresponding with the holding screw circular hole quantity specifications that suspension piston is got rid of on tight nut, the distance that the holding screw circle hole centreline extremely suspension piston that the distance of the center line of female screw thread hole of piston to piston centreline is got rid of with suspension piston on tight nut gets rid of tight nut center line is equal；Slips spring catch, it is made up of cap body, pin main body, the part of thread body three, cap body is cylinder, it is fixedly connected with one end of pin main body, it is also cylindrical structure that it, which sells main body, the pin main body other end is fixedly connected thread body, thread body is cylindrical structure, be public screwed tooth structure on its outer peripheral face, its cap body, pin main body, thread body center line on the same line, the diameter of cap body is identical with the top inside diameter of suspension piston bush tube rod；There is box structure on the pedestal of slip spider, slips structure, connect circular hole and watt holder structure, box structure is to be risen as high as the banks in " convex " shape, it is made up of inside groove and water jacket, have on the outside of pedestal in convex and rise as high as the banks, laterally pass pedestal, its groove bottom is plane, the width of its inside groove is more than the width of exterior notch, the excrescence width of top pin thread of the width of its inside groove with hanging piston loop bar is identical, the width of its exterior notch, the groove of top pin thread of the depth with hanging piston loop bar is identical, so its pin thread can draw its opening insert its box in match, the outstanding slips structure in bottom of another inner side relative with " convex " shape groove of pedestal, it is connected with pedestal middle inside plane, its plane is vertical with the groove bottom risen as high as the banks in box convex, its top is the interior semicircle side face under concaving, it is slips toothing on its interior semicircle side face, tangent plane is vertical with the groove bottom of " convex " shape groove in the middle of interior semicircle side face, and with the middle tangent plane of slip spider at grade, the top of the inner side of base is inner side plane, its plane and the middle plane of watt seat are vertically connected, it is parallel with the groove bottom of " convex " shape groove, there is spring pin hole to interlink between the groove bottom of " convex " shape groove and watt seat inner side plane, its pin-and-hole is circular port, its internal diameter is equal with the overall diameter of the pin main body of spring catch, its center line is vertical with groove bottom, and with the center line of groove bottom on the same line；The outside of slips piece is plane, its relative inner side is the interior semicircle side face under concaving, its medial plane is vertical with the middle tangent plane of interior semicircle side face, and the center tangent plane of wherein anxious face and slips piece is at grade, it is slips toothing on its interior semicircle side face, there is female thread circular hole of connecting spring pin its outside lower end, the internal diameter of its circular hole is equal with the external diameter of the public thread in the top of springlock, its inner circumferential is screwed tooth structure, it can mutually be screwed up with its public thread, the center line of its circular hole is vertical with medial plane, and with slips center tangent plane at grade, and the distance of center of circular hole to its lower plane is equal with the vertical range of center line to the mid-plane on the inside of slip spider of slip spider circular hole, the middle tangent plane of the interior semicircle side face of the circle hole centreline of its slip spider and its outside is at grade, the diameter of the interior semicircle side face with diameter greater than slip spider of the interior semicircle side face of its slips piece, it needs setting according to specification；The minimum thickness of the medial surface of slips piece and semicircle side face in it, less than the minimum range of plane of the interior semicircle side face to same upper lateral part of slip spider；Be connected one end of spring on the internal spherical surface of the cap of spring catch, spring housing is connected in the pin main body of spring catch, in the spring catch circular hole that spring catch is injected to slip spider, and pass circular hole, connection slips piece is installed in the mid-plane on the outside of slip spider, its slips piece outerplanar is with the outer outer upper plane of slip spider mutually by connecting, the thread body of spring catch is screwed into the circular hole of slips piece, tighten up and mutually screw up, latching ram bar is packed into it by outer end to hang in piston loop bar, and pass suspension piston loop bar, the length of the body of its latching ram bar is more than the length of suspension piston loop bar main body, with specific reference to need setting, the pin thread on piston loop bar top will be hung, in the box for injecting slip spider, the cap and pin main body of its spring catch, pierced into by the open slot on suspension piston loop bar top ports wall in the chamber of suspension piston loop bar top, the top of its latching ram bar of the crown post of its spring catch, slips assembly is installed into housing slips chamber, it, which hangs, installed in the main body of piston loop bar the tight lock side door of suspension, certainly there is sealing ring connection between side door and loop bar main body, then it to hang and pack into piston on the bottom of piston loop bar, in its certain piston O-ring seal is respectively mounted in two annular grooves, make piston closely coupled with loop bar, suspension piston is got rid of into tight nut on the outer end thread of suspension piston loop bar to screw up thereon, got rid of in suspension piston and installed in the circular hole of tight nut fluting flush end holding screw, it is set to be connected with the thread circular hole on piston, tightened and be fixed on screw thread hole, piston is set to be fixedly connected on loop bar, its loop bar bottom outer end internal orifice and suspension piston are got rid of between the inner plane between tight nut, connection Yx type axle sealing rings are installed；So its spring catch just pierces into the circular hole of slip spider and passes circular hole, and the male thread of its spring catch is screwed up on the female thread of box of slips piece, spring catch is set to be fixedly connected with slips piece, it, which is hung on the perisporium mouthful on piston loop bar top, recessed open slot, its depth is set as needed, its two sides distance is greater than or equal to the diameter of spring lock nut, and the outer end of latching ram bar is penetrated from piston loop bar top, and its main body pierces into loop bar and closely coupled with loop bar main body；Piston portion is connected in latching ram bar, connect installation locking piston, O-ring is respectively embedded into two ring fillisters of latching ram, the outer end of latching ram from latching ram bar is inserted in again, the connection piston portion of latching ram and latching ram bar is set closely to connect, latching ram is got rid of the small circular hole of tight nut its inwall side diameter to latching ram direction again, it is inserted in its top the outer end for drawing latching ram bar, it is set to be connected with piston rod, turn latching ram and get rid of tight nut, its female thread is set mutually to screw up and tighten with the male thread on latching ram bar, make latching ram get rid of tight nut to be squeezed on the indent annular mouth wall of piston, relied closely company with piston, get rid of and be connected between the circular hole of tight nut and the screw thread hole of corresponding latching ram with fluting flush end holding screw in latching ram, make latching ram get rid of tight nut with latching ram to be fixedly connected；So its slips total performance is installed into lower floor's slips chamber of horizontal well double-tube working blowout preventer, and slips cavity configuration is the cavity body structure that its slips assembly can back and forth move linearly in slips chamber, and slips side door passes through mid-mounting latching ram circular hole, in the main body for being tightly placed in suspension piston loop bar, that is the external diameter of main body of the internal diameter of its slips side door mid-mounting latching ram circular hole with hanging piston loop bar is equal, and hanging on latching ram circular hole internal perisporium has several hollow toroid grooves, sealing ring is respectively embedded into its several spill annular groove, make tight seal between suspension piston rod and side door, its side door is screwed by penetrating the circular hole of side door and is connected on housing, also there is sealing ring connection between its side door and housing, make its tight seal between housing；There are two oil transportation holes in its perisporium of suspension locking cylinder cylinder barrel, one oilhole is longitudinally penetrated from medial surface to lateral surface, another oilhole is from medial surface entrance, longitudinal direction is penetrated to oily cylinder, oilhole in the middle of i.e., there is horizontal straight hole to penetrate perisporium in the middle of it, it is communicated with longitudinal oilhole, its position of horizontal oilhole on cylinder tube is set as needed；The oilhole of its full envelope side door has two, and have three oilholes on slips side door, two of which oilhole mouth is connected with two oilholes mouthful of oil cylinder respectively, its another oilhole mouthful is passed through in cylinder tube, three oilholes mouthful corresponding with housing are connected three hydraulic fluid ports of its slips side door respectively, there are five oil circuit holes in housing wall, two, its upper strata, lower floor three, upper strata is that full Fengkai oil circuit hole and full envelope close oil circuit hole, lower floor opens oil circuit hole for suspension, oil circuit hole and locking oil circuit hole are closed in suspension, its each oil circuit hole is each independent, its oil circuit hole collar extension is located on the outside of outer casing frontispiece, internal orifice is respectively two, it is located at the outside for the one side that shell connects with side door respectively, and internal diameter is equal with the intraoral footpath of side door oil circuit, the coupled oil circuit mouthful specification of the corresponding connected side door of each oil circuit inn difference and position are corresponding, the port connection that each oil circuit collar extension of its shell is respectively fixedly connected with, i.e. it connects full Fengkai port connection respectively, full envelope closes port connection, port connection is opened in suspension, port connection and locking port connection are closed in suspension；There is an oil circuit in cylinder head wall, one hydraulic fluid port connects with cylinder tube hydraulic fluid port, and another hydraulic fluid port leads in cylinder barrel；Cylinder head has full envelope cylinder head and suspension locking cylinder head, and it seals cylinder head oilhole and is passed through full envelope cylinder barrel entirely, and it hangs locking cylinder head oilhole and is passed through the oily cylinder of suspension locking；It is complete that its each part successively installs connection according to program respectively, its horizontal well double-pipe operation high temperature resistant preventer five separate complete oil circuits of formation, the full Fengkai oil circuit in its upper strata connects two side door oil circuits respectively by two internal orifices of the full Fengkai oil circuit of shell, this side door oil circuit mouthful is directly open to oily cylinder, two internal orifices that full envelope pass oil circuit is sealed pass oil circuit by shell entirely connect side door oil circuit respectively, this side door oil circuit reconnects oily cylinder oil circuit, oily cylinder oil circuit reconnects cylinder head oil circuit, its cylinder head oil circuit mouthful opening is passed through in oily cylinder, the suspension of its lower floor opens oil circuit and connects two side door oil circuits respectively by two internal orifices of the full Fengkai oil circuit of shell, this side door oil circuit mouthful is directly open to oily cylinder, two internal orifices that suspension pass oil circuit is sealed pass oil circuit by shell entirely connect side door oil circuit respectively, this side door oil circuit reconnects oily cylinder oil circuit, oily cylinder oil circuit reconnects cylinder head oil circuit, its cylinder head oil circuit mouthful opening is passed through in oily cylinder, locking oil circuit connects side door oil circuit respectively by two internal orifices of shell, this side door oil circuit reconnects the locking oil circuit of cylinder barrel；There is rubber seal connection between its each oil circuit interface, make tight seal between each oil circuit, shell, side door, cylinder barrel, there is sealing ring connection between each part of cylinder head, make its tight seal, its full Fengkai port connection, full envelope closes port connection, port connection is opened in suspension, port connection is closed in suspension, locking port connection is connected one of bend pipe respectively, its bend pipe other end connects one of high-pressure oil pipe by oily nonyl, the other end of its high-pressure oil pipe is fastened on by oily nonyl on the corresponding hydraulic fluid port of horizontal well double-pipe operation high temperature resistant control device, its bend pipe, port connection, oily nonyl, high-pressure oil pipe, tight seal connection is between each part that control device is imported and exported；And all seals of high-temperature resistant well control device for double-pipe operation in horizontal wells, and high-pressure oil pipe are high temperature resistant material and are made；So blind rams structure in upper strata realizes full envelope function, and lower floor's suspension locking mechanism, its lower floor suspension lock chambers are that control chamber realizes two kinds of functions, hang oil pipe column and clamp box cupling, its piston for hanging locking mechanism is composite piston, it is in series by inside suspension piston and outside latching ram, not only can self-movement but also can mass motion, inside suspension piston plays promotion slips assembly suspension oil pipe, outside latching ram plays promotion locking clamp tile and clamps tubing coupling, when horizontal well double-pipe operation high temperature resistant preventer is realizing first suspension oil pipe function, it is interior, outboard piston (suspension and latching ram) mass motion, and when horizontal well double-pipe operation high temperature resistant preventer is realizing that second clamps oil pipe tubing coupling function, only outboard piston (latching ram) is moved, slips assembly is made up of slip spider and slips, left and right slip spider plays righting oil pipe and suspension tubing string after closing up (equivalent to pipe elevator), slips piece plays clamping tubing coupling；Both sides control chamber intermediate distance is by 41/2, and " high temperature resistant heat insulation pipe box cupling is highly set; after horizontal well double-pipe operation high temperature resistant preventer has realized suspension and clamped tubing coupling and shed top oil pipe, upper strata blind rams has enough distances smoothly to realize closing well with tubing coupling upper end；Horizontal well double-pipe operation high temperature resistant preventer ground control unit is the visual plant of controlled level well double-pipe operation high temperature resistant preventer, it is made up of remote console and hydraulic oil pipe, remote console connects horizontal well double-pipe operation high temperature resistant preventer by high-pressure oil pipe, and control horizontal well double-pipe operation high temperature resistant preventer is applied by the hydraulic oil in its high-pressure oil pipe；Remote console is made up of base, fuel tank, pump group, accumulator group, manifold, various valve members, instrument and electric cabinet, its major function is, high voltage control liquid is produced by pump group, and be stored in accumulator group, when needing open and close preventer, the high voltage control liquid from accumulator group is assigned in each control object (preventer) by the 3-position 4-way rotary valve of manifold；Its pump group is equipped with two sets of independent power sources, that is electric oil pump and hand oil pump, it is standby that accumulator group has enough highly pressurised liquids to store, meet the control requirement for the requirement closed horizontal well double-pipe operation high temperature resistant preventer and open hydraulic operated valve, electric oil pump is controlled with automatic, the control device stopped, the open and close action of each preventer by corresponding 3-position 4-way rotary valve；There is standby pressure source interface on the control manifold of remote console, pressure source can be introduced as needed within, hydraulic line has two kinds of hard tube line and soft pipeline, the two ends of its soft pipeline are the snap joint of self-sealing, realize the connection of remote console and horizontal well double-pipe operation high temperature resistant preventer, warning device is installed on remote console, to energy storage pressure, bleed pressure, the operating of oil tank liquid level and electrodynamic pump is monitored, when alarm limit of the above-mentioned parameter beyond setting, it can be spoken on remote console, visual alarm, indicate that operating personnel take measures, it can be in the low alarm of energy storage pressure, the low alarm of oil tank liquid level and electric oil pump operate abnormal alarm；Electric cabinet is fixed on remote console, the electronic motivation of connection remote control is installed in the electric line of electric cabinet, motor connects oil pump, when the electro-motor is turning, oil pump is driven to rotate, by entering oil pipe, by the oil suction in fuel tank, and be forced through flowline and be transported in accumulator group, enter oil pipe one end to be fastened on fuel tank, the other end is fastened on oil pump oil inlet, flowline one end is fixedly connected on the oil-out of oil pump, the other end connects check valve inlet, one-way valved outlet connected pipes one end；It connects oil pipe other end connection accumulator group, and so when oil pump is rotated, pressure oil is through check valve to accumulator group fuel feeding；Connection pressure controller is installed on electric cabinet, when system pressure reaches certain setting value, pressure controller automatically cuts off power supply, make electric oil pump fuel cut-off, when system pressure is depressured certain value, electric oil pump can reset automatically work, the pressure of accumulator group is so set to remain in certain scope, it is available for operation preventer to be turned on and off at any time, accumulator group installs isolating valve by oil pipe connection, overflow valve, reconnect control manifold, its manifold is connected to the import of 3-position 4-way rotary valve, corresponded to respectively on each oil circuit of its control device and the connection control full sealing switch reversal valve of preventer is installed, control preventer suspension switch reversal valve, control the reversal valve of preventer locking switch, as long as it pulls corresponding 3-position 4-way rotary valve handle, make "ON" can be achieved, the operation of "Off" preventer, so, the pressure oil being stored in accumulator group passes through accumulator isolation valve, oil filter, again after decompression overflow valve decompression, into control manifold, to each 3-position 4-way rotary valve oil inlet, 3-position 4-way rotary valve (liquid rotary valve) used on remote console is " O " type function, rotate valve handle " in " position when, each chamber is not communicated with, and when handle is in "ON" position formula "Off" position, as pressure oil enters one end of oil cylinder in preventer, the fluid of the other end makes through 3-position 4-way rotary valve oil return box；Accumulator group is the structure that multiple bladder type hydropneumatic accumulators interconnect, bladder type hydropneumatic accumulator plays storage energy in hydraulic system, steady pressure, reduce power consumption, compensation leakage is oozed, a variety of effects such as absorption pressure pulsating force and mitigation impulsive force, it is supported on the bracket of remote console securely, it is by shell, capsule and charge valve and hydraulic fluid port composition, body has charge valve on top, capsule in charge valve connection shell cavity, there is hydraulic fluid port shell lower end, in hydraulic fluid port insertion shell, insufflation gas in its capsule, usually nitrogen, composition accumulator group is combined in several bladder type hydropneumatic accumulator connections, its intracapsular nitrogen has certain pressure, when hydraulic oil is entered in shell by hydraulic fluid port, compress capsule, the air pressure of the nitrogen in capsule is set to increase, the pressure of its hydraulic oil rises to certain amplitude, conversely when using accumulator, due to the hydraulic oil in the High Voltage compressing shell in capsule, carrying oil necessarily has pressure, can by hydraulic fluid port outwardly against, pressure oil is transported to certain position by oil pipe, and electric oil pump is started working, its pressure oil is set to remain certain pressure, so as to controlled level well double-pipe operation high temperature resistant preventer；And the oil circuit of horizontal well double-pipe operation high temperature resistant preventer is connected by high-pressure oil pipe with the oil circuit in the ground control unit of horizontal well double-pipe operation high temperature resistant preventer, the reversal valve that oil circuit is closed in the full Fengkai of connection control, full envelope is respectively mounted on each oil circuit in the control cabinet of horizontal well double-pipe operation high temperature resistant preventer ground control unit, control suspension is closed, the reversal valve of oil circuit is driven in suspension and the reversal valve of control locking oil circuit；So, the reversal valve of suspension action will be controlled to pull to off-position in horizontal well double-pipe operation high temperature resistant preventer control cabinet, then hydraulic oil enters lower floor's oil cylinder closing chamber from horizontal well double-pipe operation high temperature resistant preventer suspension "Off" interface, promote left and right piston that left and right slips assembly is used in conjunction and be moved to well head center, after slips assembly centering is close to, oil pipe column can be raised and decentralized, two panels slips assembly body closes up rear internal diameter than the big 1mm of oil pipe body external diameter, when tubing coupling bottom surface, which is dropped down onto, positions end face on slips assembly, realize tubing string hanging function, the reversal valve of locking action will be controlled to pull to positioning in preventer control cabinet again, then preventer " locking " interface is changed into oil return opening, the hydraulic oil closed into preventer lower floor oil cylinder in chamber further promotes piston to be moved to center, now the slips piece in slips assembly fully clamps tubing coupling under piston rod promotion, after box cupling is clamped, operating personnel can shed clamped tubing coupling upper end oil pipe by hydraulic tongs, the reversal valve of full envelope action will be controlled to pull to off-position in preventer control cabinet, then hydraulic oil enters upper strata oil cylinder and closes chamber from horizontal well double-pipe operation high temperature resistant preventer " full envelope is closed " interface, left and right piston is promoted to be moved to well head center together with left and right blind rams, realize full shut-in well mouth, and all seals and oil pipe are exotic material and are made, so its high temperature resistant, so as to reach the purpose of this utility model.

Due to using above-mentioned technical proposal, its high-temperature resistant well control device for double-pipe operation in horizontal wells built-in suspension locks slips and blind rams, it is not implemented only in the two-tube rountrip of horizontal well, tubing string is quickly suspended on well head by the adverse environment (well head height, Jing Wengao) that operating personnel can successfully evade well head after overflow is found, unload single rear closing blind rams, implement the function of quick closing well, and high temperature resistant, it is easy to use.

Brief description of the drawings

The utility model high-temperature resistant well control device for double-pipe operation in horizontal wells is described further below in conjunction with the accompanying drawings.

Accompanying drawing 1 dissects structural representation for the preventer of the utility model high-temperature resistant well control device for double-pipe operation in horizontal wells

Accompanying drawing 2 is the structural representation on the outside of the preventer of the utility model high-temperature resistant well control device for double-pipe operation in horizontal wells

Accompanying drawing 3 is the anatomy structural representation of the latching ram assembly of the utility model high-temperature resistant well control device for double-pipe operation in horizontal wells

Accompanying drawing 4 is the anatomy structural representation of the suspension piston assembly of the utility model high-temperature resistant well control device for double-pipe operation in horizontal wells

Accompanying drawing 5 dissects structural representation for the slips spring catch of the utility model high-temperature resistant well control device for double-pipe operation in horizontal wells

In figure：1. cylinder head is sealed entirely, 2. cylinder tube is sealed entirely, 3. side door is sealed entirely, 4. blind rams, 5. sealed before blind rams, 6. top sealing, 7. piston is sealed entirely, 8. blind rams locking screw, 9. latching ram assembly 10. hangs piston assembly, 11. slip spider, 12. housing, 13. slips side door, 14. the tight lock cylinder tube 15. of suspension hangs tight lock oil cylinder head, 16. spring, 17. hang locking cylinder bolt, 18. cylinder nut, 19. slips assembly, 20. main latus rectum structure, 21. slips piece, 22. sell main body, 23. sell cap body, 24. slips spring catch, 25. thread body, 26. latching ram bar, 27. at the top of latching ram bar, 28. latching ram bar connects the axis body of piston portion, 29. latching ram, 30. latching ram gets rid of tight nut, 31. the thread body for the latching ram bar of flush end holding screw 32. of slotting, 33. the outside of latching ram bar, 34. the body of latching ram bar, 35. hang the top of piston loop bar, 36. hang piston loop bar main body, 37. hang piston loop bar, 38. hang piston, 39. suspension piston gets rid of tight nut, 40. hang the bottom of piston, 41.O type sealing rings, 42.Yx type axle sealing rings, 43. bar V-arrangement presss from both sides fabric building rubber compound sealing ring, 44. port connection is opened in suspension, port connection is opened in 45 lockings, 46. port connection is closed in suspension, 47. full Fengkai port connection, 48. full envelope closes oilhole in the middle of the oily cylinder of the suspension locking of port connection 49., 50. suspension locking slips side door oilhole, 51. the oilhole on suspension locking cylinder head, 52. side door oilhole is sealed entirely, 53. the oilhole sealed entirely on cylinder head

Embodiment

In figure：High-temperature resistant well control device for double-pipe operation in horizontal wells is interconnected to constitute by horizontal well double-pipe operation high temperature resistant preventer and horizontal well double-pipe operation high temperature resistant preventer ground control unit, horizontal well double-pipe operation high temperature resistant preventer is double ram type preventer structure, its center is main latus rectum structure (20), and left, each internal structure of right structure on two sides, specification is identical, is corresponded between each part of left side structure and each part of right side structure, its corresponding component shape, size, specification is identical, and left side structure is relatively symmetrically connected with right side structure with main latus rectum structure, and horizontal well double-pipe operation high temperature resistant preventer is by housing (12), port connection, seals cylinder head (11) entirely, full envelope cylinder tube (2), full envelope side door (3), blind rams (4), (5) are sealed before blind rams, top sealing (6), full envelope piston (7), blind rams locking screw (8), cylinder nut (18), hang locking cylinder bolt (17), latching ram assembly (9), hang piston assembly (10), slips assembly (19), slips side door (13), full envelope control cylinder bolt, side door bolt, the tight lock cylinder tube (14) of suspension, locking cylinder cylinder head (15) is hung to constitute；Upper strata is blind rams structure, and lower floor is suspension locking mechanism；There are suspension lock chambers in its lower floor, and there are blind rams chamber, built-in blind rams in built-in slips assembly, upper strata；Its upper strata is blind rams structure, it is main by housing layer shell flashboard chamber switch valve plate hydraulic cylinder assembly, flashboard assembly, manual locking leading screw, oil inlet and oil return mouthful composition, the upper strata left and right sides of housing has respectively to be communicated with the main latus rectum of casing center, and the main latus rectum of the heart is left wherein, right both sides, symmetrical shape and structure specification identical flashboard chamber, flashboard chamber is in Long Circle in vertical longitudinal cross-section, side door is connected by side door bolt with housing in itself, cylinder cap, switch flashboard fluid cylinder, it is fixed together by fluid cylinder connecting bolt and side door, flashboard assembly hangs over switch flashboard liquid cylinder piston bar front end, two way seal is realized using y-shaped ring between side door and switch flashboard fluid cylinder；Sealing device between piston rod and side door is divided into two parts, a part is sealing well pressure, a part is to seal the oil pressure that hydraulic control is produced, sealing mechanism is located between this two department twice, there is the sealing ring of multiplet, and the auxiliary seal of middle O-ring seals, flashboard switch controls by hydraulic control system reversal valve；When closing blind rams, it by sealing everywhere, that is flashboard top sealing is tightly connected with housing, before flashboard sealing with pipe and preceding sealing being tightly connected each other, being tightly connected between housing and side door, being tightly connected between piston rod and side door, the sealing of flashboard is such, one is that packing unit crimp sealing is anterior before hydraulic oil effect lower piston rod promotes flashboard, push up between packing unit and housing at the top of interference compression seal, so as to realize initial sealing, two be when having pressure in well, well pressure seals further crimp before flashboard pushed aft flashboard, well pressure promotes flashboard floating to be adjacent to the sealing surface on housing from bottom simultaneously, so as to form reliable sealing；Flashboard assembly has certain gap with flashboard room, flashboard is allowed to be fluctuated in housing chamber, there is mutually prominent guide pad the front end of flashboard, it can be inserted into the groove of opposite flashboard, horizontal well double-pipe operation high temperature resistant preventer lower floor is suspension locking mechanism, its structure is, the housing lower floor left and right sides has respectively to be communicated with the main latus rectum of housing, and the main latus rectum left and right sides of the heart is symmetrical wherein, shape and structure specification identical hangs lock chambers, being hung at it in lock chambers has suspension locking assembly, suspension locking piston assembly is totally made up of suspension piston assembly and latching ram, piston assembly (10) is hung by suspension piston loop bar, piston, hang piston and spell tight nut, O-ring seal (41), Yx types axle sealing ring (42), bar V-arrangement presss from both sides fabric building rubber compound sealing ring (43), flush end holding screw of slotting is constituted；It is hollow circular-tube structure to hang piston loop bar (37), empty in it is hollow cylindrical structure, the center line of its hollow cylinder and the center line of pipe are on the same line, it is by top (35), main body (36), bottom (40) is constituted, top top is pin thread structure, that is the fluted structure of top peripheral, its top is excrescence, on its excrescence, lower two sides is the plane being parallel to each other, the distance that its two plane arrives pipe center line respectively is equal, the distance between its two plane is more than the outer diameter of a circle of pipe main body, groove is structure of rising as high as the banks, the groove bottom of its groove is parallel with two planes of excrescence, the central axis of the two grooves side of its groove respectively with pipe, the distance between two groove bottoms are less than the overall diameter of pipe, the vertical range that two groove bottoms arrive pipe center line respectively is equal, there is recessed open slot on the perisporium mouthful on its top, its depth and width are set as needed, the groove bottom of its open slot is vertical with two planes of excrescence, and with its pipe central axis, its two groove side is vertical with groove bottom respectively, the internal diameter at top is more than the internal diameter of pipe, its its outer end side face of bottom (40) for hanging piston loop bar is public screwed tooth structure, its the inner is cylindrical structure, the outer circumference diameter of its outer end public affairs screwed tooth structure is less than inner cylinder outer circumference diameter, its inner cylinder outer circumference diameter is less than the outer circumference diameter of main body again, Zhoukou City is with diameter greater than pipe interior diameter in its public screwed tooth structure；Suspension piston gets rid of tight nut (39) for cyclic structure, the diameter of its inner peripheral surface is equal with the interior diameter for hanging piston loop bar main body, the center line of its inner peripheral surface and outer circumference surface is on the same line, it is planar annular outside its cyclic structure, the central axis of its planar annular and cyclic structure, its opposite side relative with planar annular is hollow toroid slot structure, the annular groove bottom of its hollow toroid slot structure is parallel with planar annular, its center line gets rid of the center line of tight nut on the same line with suspension piston, the diameter of the inner ring periphery of its annular groove and the equal diameters of Zhoukou City in the bottom of suspension piston loop bar, it is female screwed tooth structure on its outer shroud periphery, the external diameter of the outer peripheral face of the public screwed tooth structure of bottom of the diameter of its outer shroud periphery with hanging piston loop bar is equal, the female thread for making the male thread of suspension piston loop bar get rid of tight nut with suspension piston is mutually screwed up, in hollow toroid groove, the distance between outer shroud periphery is identical with the thickness of suspension piston loop bar bottom loop bar mouthful, connected between the inner peripheral surface of cyclic structure and the inner ring periphery of hollow toroid groove for planar annular, for internal spherical surface, also planar annular is connected between the outer circumferential surface of its cyclic structure and the outer shroud periphery of hollow toroid groove, for outer annular surface, and two annular connection planes are parallel to each other, and it is parallel with cyclic structure planar annular, the distance of its internal spherical surface to outer planar annular is less than outer annular surface to the distance of planar annular；Suspension piston, which is spelled, several flush end holding screw circular hole break-through of slotting between the planar annular and opposite side outer annular surface of tight nut, it is made up of interior mother rib lateral rotundum and outer mother rib lateral rotundum, the diameter with diameter greater than interior mother rib lateral rotundum of its outer mother rib lateral rotundum, fluting flush end holding screw is made up of screw cap and screw body, the diameter with diameter greater than screw body of its screw cap, the diameter of its interior mother rib lateral rotundum is identical with the diameter of screw body, the diameter of its outer mother rib lateral rotundum is identical with the overall diameter of screw cap, and the outer end of screw body is public screwed tooth structure；It is annulus column construction to hang piston (38), internal orifice plane is parallel to each other with collar extension plane, and with the central axis of annulus column construction, there are two hollow toroid grooves on the inner peripheral surface of its inner mouth plane side, that is rubber ring recess, the shape of two hollow toroid groove, size, depth, structure is identical, its center line is on the same line, and the center line of its center line and piston is on the same line, its collar extension plane inwardly has annular opening, its annular opening is formed by connecting by Li Kou faces and circumferential surface, its Li Kou face is parallel with collar extension face, and the center line in Li Kou faces and the center line in collar extension face are on the same line, interconnected between Li Kou faces and collar extension face by annular circumferential face, the center line of its ring-shaped periphery also with the center line of piston on the same line, with diameter greater than or equal to suspension piston get rid of the external diameter of tight nut in its annular circumferential face, if having fundatrix screw thread hole on its Li Kou face, the size of its screw thread hole, depth, structure is identical, and its center line is into being parallel to each other, with the centerline parallel of piston, distance to the center line of piston is equal, and it is corresponding with the holding screw circular hole quantity specifications that suspension piston is got rid of on tight nut, the distance that the holding screw circle hole centreline extremely suspension piston that the distance of the center line of female screw thread hole of piston to piston centreline is got rid of with suspension piston on tight nut gets rid of tight nut center line is equal；Its latching ram assembly (9) is by latching ram bar (26), latching ram (29), latching ram gets rid of tight nut (30), O-ring (41), flush end holding screw of slotting is constituted, its latching ram bar is loop bar structure, by top, body, connect piston portion and outside (33) are constituted, top (27), body (34) is cylinder, its top outer diameter is more than the external diameter of body, its center line is on same straight line, connection piston portion is two parts, inside connects the cylindrical axis body (28) of piston for set, external connection latching ram gets rid of the cylindrical thread body (32) of tight nut (30), axis body connects with thread body phase, the diameter of its thread body is less than the diameter of axis body, and two center line on the same line, and with the center line of latching ram bar on the same line, its axis body other end is connected with body (34), its axis body diameter is less than the diameter of body, one end of outside (33) cylindrical bar of thread body other end connection latching ram bar；Latching ram gets rid of tight nut (30) for cirque structure, it is interior, outer peripheral face is periphery, two sides be parallel to each other and with the planar annular of cirque structure central axis, the center line of its inner peripheral surface and the center line of outer circumference surface are on the same line, it is screwed tooth structure on its inner peripheral surface, its interior diameter is identical with the overall diameter of loop bar thread body, and two the distance between plane it is identical with the thickness of thread body, male thread on thread body is mutually screwed up with female thread on inner peripheral surface, latching ram gets rid of some circular holes for having its two plane of break-through between two planes of tight nut, the center line of its some circular hole is parallel to each other, and the centerline parallel of tight nut is got rid of with latching ram, the circular hole that latching ram is spelled between two planar annulars of tight nut is referred to as flush end holding screw circular hole of slotting, it is made up of interior mother rib lateral rotundum and outer mother rib lateral rotundum, the diameter with diameter greater than interior mother rib lateral rotundum of its outer mother rib lateral rotundum, fluting flush end holding screw is made up of screw cap and screw body, the diameter with diameter greater than screw body of its screw cap, the diameter of its interior mother rib lateral rotundum is identical with the diameter of screw body, the diameter of its outer mother rib lateral rotundum is identical with the overall diameter of screw cap, the outer end of screw body is public screwed tooth structure；Latching ram is annulus column construction, internal orifice plane is parallel to each other with collar extension plane, and with the central axis of annulus column construction, there are two hollow toroid grooves on the inner peripheral surface of its inner mouth plane side, that is rubber ring recess, the shape of two hollow toroid groove, size, depth, structure is identical, its center line is on the same line, and the center line of its center line and piston is on the same line, its collar extension plane inwardly has annular opening, its annular opening is formed by connecting by Li Kou faces and circumferential surface, its Li Kou face is parallel with collar extension face, and in mouth center line and collar extension face center line on the same line, interconnected between Li Kou faces and collar extension face by ring-shaped periphery, the internal diameter in its annular circumferential face gets rid of the external diameter of tight nut more than or equal to latching ram, the center line of its ring-shaped periphery also with the center line of piston on the same line, if having fundatrix screw thread hole on its Li Kou face, the size of its screw thread hole, depth, structure is identical, and its center line is into being parallel to each other, with the centerline parallel of piston, distance to the center line of piston is equal, and it is corresponding with the holding screw circular hole quantity specifications that suspension piston is got rid of on tight nut, the distance that the holding screw circle hole centreline extremely suspension piston that the distance of the center line of female screw thread hole of piston to piston centreline is got rid of with suspension piston on tight nut gets rid of tight nut center line is equal；Slips spring catch (24), it is made up of cap body (23), pin main body (22), the part of thread body (25) three, cap body is cylinder, it is fixedly connected with one end of pin main body, it is also cylindrical structure that it, which sells main body, the pin main body other end is fixedly connected thread body, thread body is cylindrical structure, it is public screwed tooth structure on its outer peripheral face, its cap body, pin main body, thread body center line on the same line, the diameter of cap body is identical with the top inside diameter of suspension piston bush tube rod；There is box structure on the pedestal of slip spider (11), slips structure, connect circular hole and watt holder structure, box structure is to be risen as high as the banks in " convex " shape, it is made up of inside groove and water jacket, have on the outside of pedestal in convex and rise as high as the banks, laterally pass pedestal, its groove bottom is plane, the width of its inside groove is more than the width of exterior notch, the excrescence width of top pin thread of the width of its inside groove with hanging piston loop bar is identical, the width of its exterior notch, the groove of top pin thread of the depth with hanging piston loop bar is identical, so its pin thread can draw its opening insert its box in match, the outstanding slips structure in bottom of another inner side relative with " convex " shape groove of pedestal, it is connected with pedestal middle inside plane, its plane is vertical with the groove bottom risen as high as the banks in box convex, its top is the interior semicircle side face under concaving, it is slips toothing on its interior semicircle side face, tangent plane is vertical with the groove bottom of " convex " shape groove in the middle of interior semicircle side face, and with the middle tangent plane of slip spider at grade, the top of the inner side of base is inner side plane, its plane and the middle plane of watt seat are vertically connected, it is parallel with the groove bottom of " convex " shape groove, there is spring pin hole to interlink between the groove bottom of " convex " shape groove and watt seat inner side plane, its pin-and-hole is circular port, its internal diameter is equal with the overall diameter of the pin main body of spring catch, its center line is vertical with groove bottom, and with the center line of groove bottom on the same line；The outside of slips piece (21) is plane, its relative inner side is the interior semicircle side face under concaving, its medial plane is vertical with the middle tangent plane of interior semicircle side face, and the center tangent plane of wherein anxious face and slips piece is at grade, it is slips toothing on its interior semicircle side face, there is female thread circular hole of connecting spring pin its outside lower end, the internal diameter of its circular hole is equal with the external diameter of the public thread in the top of springlock, its inner circumferential is screwed tooth structure, it can mutually be screwed up with its public thread, the center line of its circular hole is vertical with medial plane, and with slips center tangent plane at grade, and the distance of center of circular hole to its lower plane is equal with the vertical range of center line to the mid-plane on the inside of slip spider of slip spider circular hole, the middle tangent plane of the interior semicircle side face of the circle hole centreline of its slip spider and its outside is at grade, the diameter of the interior semicircle side face with diameter greater than slip spider of the interior semicircle side face of its slips piece, it needs setting according to specification；The minimum thickness of the medial surface of slips piece and semicircle side face in it, less than the minimum range of plane of the interior semicircle side face to same upper lateral part of slip spider；Be connected one end of spring (16) on the internal spherical surface of the cap of spring catch, spring housing is connected in the pin main body of spring catch, in the spring catch circular hole that spring catch is injected to slip spider, and pass circular hole, connection slips piece is installed in the mid-plane on the outside of slip spider, its slips piece outerplanar is with the outer outer upper plane of slip spider mutually by connecting, the thread body of spring catch is screwed into the circular hole of slips piece, tighten up and mutually screw up, latching ram bar is packed into it by outer end to hang in piston loop bar, and pass suspension piston loop bar, the length of the body of its latching ram bar is more than the length of suspension piston loop bar main body, with specific reference to need setting, the pin thread on piston loop bar top will be hung, in the box for injecting slip spider, the cap and pin main body of its spring catch, pierced into by the open slot on suspension piston loop bar top ports wall in the chamber of suspension piston loop bar top, the top of its latching ram bar of the crown post of its spring catch, slips assembly is installed into housing slips chamber, it, which hangs, installed in the main body of piston loop bar the tight lock side door of suspension, certainly there is sealing ring connection between side door and loop bar main body, then it to hang and pack into piston on the bottom of piston loop bar, in its certain piston O-ring seal is respectively mounted in two annular grooves, make piston closely coupled with loop bar, suspension piston is got rid of into tight nut on the outer end thread of suspension piston loop bar to screw up thereon, got rid of in suspension piston and installed in the circular hole of tight nut fluting flush end holding screw, it is set to be connected with the thread circular hole on piston, tightened and be fixed on screw thread hole, piston is set to be fixedly connected on loop bar, its loop bar bottom outer end internal orifice and suspension piston are got rid of between the inner plane between tight nut, connection Yx type axle sealing rings are installed；So its spring catch just pierces into the circular hole of slip spider and passes circular hole, and the male thread of its spring catch is screwed up on the female thread of box of slips piece, spring catch is set to be fixedly connected with slips piece, it, which is hung on the perisporium mouthful on piston loop bar top, recessed open slot, its depth is set as needed, its two sides distance is greater than or equal to the diameter of spring lock nut, and the outer end of latching ram bar is penetrated from piston loop bar top, and its main body pierces into loop bar and closely coupled with loop bar main body；Piston portion is connected in latching ram bar, connect installation locking piston, O-ring is respectively embedded into two ring fillisters of latching ram, the outer end of latching ram from latching ram bar is inserted in again, the connection piston portion of latching ram and latching ram bar is set closely to connect, latching ram is got rid of the small circular hole of tight nut its inwall side diameter to latching ram direction again, it is inserted in its top the outer end for drawing latching ram bar, it is set to be connected with piston rod, turn latching ram and get rid of tight nut, its female thread is set mutually to screw up and tighten with the male thread on latching ram bar, make latching ram get rid of tight nut to be squeezed on the indent annular mouth wall of piston, relied closely company with piston, get rid of and be connected between the circular hole of tight nut and the screw thread hole of corresponding latching ram with fluting flush end holding screw in latching ram, make latching ram get rid of tight nut with latching ram to be fixedly connected；So its slips total performance is installed into lower floor's slips chamber of horizontal well double-tube working blowout preventer, and slips cavity configuration is the cavity body structure that its slips assembly can back and forth move linearly in slips chamber, and slips side door passes through mid-mounting latching ram circular hole, in the main body for being tightly placed in suspension piston loop bar, that is the external diameter of main body of the internal diameter of its slips side door mid-mounting latching ram circular hole with hanging piston loop bar is equal, and hanging on latching ram circular hole internal perisporium has several hollow toroid grooves, sealing ring is respectively embedded into its several spill annular groove, make tight seal between suspension piston rod and side door, its side door is screwed by penetrating the circular hole of side door and is connected on housing, also there is sealing ring connection between its side door and housing, make its tight seal between housing；There are two oil transportation holes in suspension locking cylinder cylinder barrel (14) its perisporium, one oilhole is longitudinally penetrated from medial surface to lateral surface, another oilhole is from medial surface entrance, longitudinal direction is penetrated to oily cylinder, oilhole (49) in the middle of i.e., there is horizontal straight hole to penetrate perisporium in the middle of it, it is communicated with longitudinal oilhole, its position of horizontal oilhole on cylinder tube is set as needed；The oilhole of its full envelope side door has two, and have three oilholes on slips side door (50), two of which oilhole mouth is connected with two oilholes mouthful of oil cylinder respectively, its another oilhole mouthful is passed through in cylinder tube, three oilholes mouthful corresponding with housing are connected three hydraulic fluid ports of its slips side door respectively, there are five oil circuit holes in housing wall, two, its upper strata, lower floor three, upper strata is that full Fengkai oil circuit hole and full envelope close oil circuit hole, lower floor opens oil circuit hole for suspension, oil circuit hole and locking oil circuit hole are closed in suspension, its each oil circuit hole is each independent, its oil circuit hole collar extension is located on the outside of outer casing frontispiece, internal orifice is respectively two, it is located at the outside for the one side that shell connects with side door respectively, and internal diameter is equal with the intraoral footpath of side door oil circuit, the coupled oil circuit mouthful specification of the corresponding connected side door of each oil circuit inn difference and position are corresponding, the port connection that each oil circuit collar extension of its shell is respectively fixedly connected with, i.e. it connects full Fengkai port connection (47) respectively, full envelope closes port connection (48), port connection (44) is opened in suspension, port connection (46) and locking port connection (45) are closed in suspension；There is an oil circuit in cylinder head wall, one hydraulic fluid port connects with cylinder tube hydraulic fluid port, and another hydraulic fluid port leads in cylinder barrel；Cylinder head has full envelope cylinder head and suspension locking cylinder head, and it seals cylinder head oilhole (53) and is passed through full envelope cylinder barrel entirely, and it hangs locking cylinder head oilhole (51) and is passed through the oily cylinder of suspension locking；It is complete that its each part successively installs connection according to program respectively, its horizontal well double-pipe operation high temperature resistant preventer five separate complete oil circuits of formation, the full Fengkai oil circuit in its upper strata connects two side door oil circuits respectively by two internal orifices of the full Fengkai oil circuit of shell, this side door oil circuit mouthful is directly open to oily cylinder, two internal orifices that full envelope pass oil circuit is sealed pass oil circuit by shell entirely connect side door oil circuit respectively, this side door oil circuit reconnects oily cylinder oil circuit, oily cylinder oil circuit reconnects cylinder head oil circuit, its cylinder head oil circuit mouthful opening is passed through in oily cylinder, the suspension of its lower floor opens oil circuit and connects two side door oil circuits respectively by two internal orifices of the full Fengkai oil circuit of shell, this side door oil circuit mouthful is directly open to oily cylinder, two internal orifices that suspension pass oil circuit is sealed pass oil circuit by shell entirely connect side door oil circuit respectively, this side door oil circuit reconnects oily cylinder oil circuit, oily cylinder oil circuit reconnects cylinder head oil circuit, its cylinder head oil circuit mouthful opening is passed through in oily cylinder, locking oil circuit connects side door oil circuit respectively by two internal orifices of shell, this side door oil circuit reconnects the locking oil circuit of cylinder barrel；There is rubber seal connection between its each oil circuit interface, make tight seal between each oil circuit, shell, side door, cylinder barrel, there is sealing ring connection between each part of cylinder head, make its tight seal, its full Fengkai port connection, full envelope closes port connection, port connection is opened in suspension, port connection is closed in suspension, locking port connection is connected one of bend pipe respectively, its bend pipe other end connects one of high-pressure oil pipe by oily nonyl, the other end of its high-pressure oil pipe is fastened on by oily nonyl on the corresponding hydraulic fluid port of horizontal well double-pipe operation high temperature resistant control device, its bend pipe, port connection, oily nonyl, high-pressure oil pipe, control device is tight seal connection between exporting each part；And all seals of high-temperature resistant well control device for double-pipe operation in horizontal wells, and high-pressure oil pipe are high temperature resistant material and are made；Its piston for hanging locking mechanism is composite piston, it is in series by inside suspension piston and outside latching ram, not only can self-movement but also can mass motion, inside suspension piston plays promotion slips assembly suspension oil pipe, outside latching ram plays promotion locking clamp tile and clamps tubing coupling, horizontal well double-pipe operation high temperature resistant preventer ground control unit is the visual plant of controlled level well double-pipe operation high temperature resistant preventer, it is made up of remote console and hydraulic oil pipe, remote console connects horizontal well double-pipe operation high temperature resistant preventer by high-pressure oil pipe, control horizontal well double-pipe operation high temperature resistant preventer is applied by the hydraulic oil in its high-pressure oil pipe；Remote console is made up of base, fuel tank, pump group, accumulator group, manifold, various valve members, instrument and electric cabinet, its major function is, high voltage control liquid is produced by pump group, and be stored in accumulator group, when needing open and close preventer, the high voltage control liquid from accumulator group is assigned in each control object (preventer) by the 3-position 4-way rotary valve of manifold；Its pump group is equipped with two sets of independent power sources, that is electric oil pump and hand oil pump, it is standby that accumulator group has enough highly pressurised liquids to store, meet the control requirement for the requirement closed horizontal well double-pipe operation high temperature resistant preventer and open hydraulic operated valve, electric oil pump is controlled with automatic, the control device stopped, the open and close action of each preventer by corresponding 3-position 4-way rotary valve；There is standby pressure source interface on the control manifold of remote console, pressure source can be introduced as needed within, hydraulic line has two kinds of hard tube line and soft pipeline, the two ends of its soft pipeline are the snap joint of self-sealing, realize the connection of remote console and horizontal well double-pipe operation high temperature resistant preventer, warning device is installed on remote console, to energy storage pressure, bleed pressure, the operating of oil tank liquid level and electrodynamic pump is monitored, when alarm limit of the above-mentioned parameter beyond setting, it can be spoken on remote console, visual alarm, indicate that operating personnel take measures, it can be in the low alarm of energy storage pressure, the low alarm of oil tank liquid level and electric oil pump operate abnormal alarm；Electric cabinet is fixed on remote console, the electronic motivation of connection remote control is installed in the electric line of electric cabinet, motor connects oil pump, when the electro-motor is turning, oil pump is driven to rotate, by entering oil pipe, by the oil suction in fuel tank, and be forced through flowline and be transported in accumulator group, enter oil pipe one end to be fastened on fuel tank, the other end is fastened on oil pump oil inlet, flowline one end is fixedly connected on the oil-out of oil pump, the other end connects check valve inlet, one-way valved outlet connected pipes one end；It connects oil pipe other end connection accumulator group, and so when oil pump is rotated, pressure oil is through check valve to accumulator group fuel feeding；Connection pressure controller is installed on electric cabinet, when system pressure reaches certain setting value, pressure controller automatically cuts off power supply, make electric oil pump fuel cut-off, when system pressure is depressured certain value, electric oil pump can reset automatically work, the pressure of accumulator group is so set to remain in certain scope, it is available for operation preventer to be turned on and off at any time, accumulator group installs isolating valve by oil pipe connection, overflow valve, reconnect control manifold, its manifold is connected to the import of 3-position 4-way rotary valve, corresponded to respectively on each oil circuit of its control device and the connection control full sealing switch reversal valve of preventer is installed, control preventer suspension switch reversal valve, control the reversal valve of preventer locking switch, as long as it pulls corresponding 3-position 4-way rotary valve handle, make "ON" can be achieved, the operation of "Off" preventer, so, the pressure oil being stored in accumulator group passes through accumulator isolation valve, oil filter, again after decompression overflow valve decompression, into control manifold, to each 3-position 4-way rotary valve oil inlet, 3-position 4-way rotary valve (liquid rotary valve) used on remote console is " O " type function, rotate valve handle " in " position when, each chamber is not communicated with, and when handle is in "ON" position formula "Off" position, as pressure oil enters one end of oil cylinder in preventer, the fluid of the other end makes through 3-position 4-way rotary valve oil return box；Accumulator group is the structure that multiple bladder type hydropneumatic accumulators interconnect, bladder type hydropneumatic accumulator plays storage energy in hydraulic system, steady pressure, reduce power consumption, compensation leakage is oozed, a variety of effects such as absorption pressure pulsating force and mitigation impulsive force, it is supported on the bracket of remote console securely, it is by shell, capsule and charge valve and hydraulic fluid port composition, body has charge valve on top, capsule in charge valve connection shell cavity, there is hydraulic fluid port shell lower end, in hydraulic fluid port insertion shell, insufflation gas in its capsule, usually nitrogen, composition accumulator group is combined in several bladder type hydropneumatic accumulator connections, its intracapsular nitrogen has certain pressure, when hydraulic oil is entered in shell by hydraulic fluid port, compress capsule, the air pressure of the nitrogen in capsule is set to increase, the pressure of its hydraulic oil rises to certain amplitude, conversely when using accumulator, due to the hydraulic oil in the High Voltage compressing shell in capsule, carrying oil necessarily has pressure, can by hydraulic fluid port outwardly against, pressure oil is transported to certain position by oil pipe, and electric oil pump is started working, its pressure oil is set to remain certain pressure, so as to controlled level well double-pipe operation high temperature resistant preventer；And the oil circuit of horizontal well double-pipe operation high temperature resistant preventer is connected by high-pressure oil pipe with the oil circuit in the ground control unit of horizontal well double-pipe operation high temperature resistant preventer, the full Fengkai of connection control, the reversal valve of full envelope pass oil circuit are respectively mounted on its each oil circuit in the control cabinet of horizontal well double-pipe operation high temperature resistant preventer ground control unit, control suspension is closed, the reversal valve of oil circuit is driven in suspension and controls the reversal valve of locking oil circuit.

Claims (4)

1. a kind of high-temperature resistant well control device for double-pipe operation in horizontal wells, it is interconnected to constitute by horizontal well double-pipe operation high temperature resistant preventer and horizontal well double-pipe operation high temperature resistant preventer ground control unit, horizontal well double-pipe operation high temperature resistant preventer is double ram type preventer structure, its center is main latus rectum structure, and left, each internal structure of right structure on two sides, specification is identical, is corresponded between each part of left side structure and each part of right side structure, its corresponding component shape, size, specification is identical, and left side structure is relatively symmetrically connected with right side structure with main latus rectum structure, and horizontal well double-pipe operation high temperature resistant preventer is by housing, port connection, seals cylinder head entirely, full envelope cylinder tube, full envelope side door, blind rams, sealed before blind rams, top sealing, full envelope piston, blind rams locking screw, cylinder nut, hang locking cylinder bolt, latching ram assembly, hang piston assembly, slips assembly, slips side door, full envelope control cylinder bolt, side door bolt, the tight lock cylinder tube of suspension, locking cylinder cylinder head is hung to constitute；There are blind rams chamber, built-in blind rams in housing upper strata；Its upper strata is blind rams structure, it is main by housing layer shell flashboard chamber switch valve plate hydraulic cylinder assembly, flashboard assembly, manual locking leading screw, oil inlet and oil return mouthful composition, the upper strata left and right sides of housing has respectively to be communicated with the main latus rectum of casing center, and the main latus rectum of the heart is left wherein, right both sides, symmetrical shape and structure specification identical flashboard chamber, flashboard chamber is in Long Circle in vertical longitudinal cross-section, side door is connected by side door bolt with housing in itself, cylinder cap, switch flashboard fluid cylinder, it is fixed together by fluid cylinder connecting bolt and side door, flashboard assembly hangs over switch flashboard liquid cylinder piston bar front end, two way seal is realized using y-shaped ring between side door and switch flashboard fluid cylinder；Sealing device between piston rod and side door is divided into two parts, a part is sealing well pressure, a part is to seal the oil pressure that hydraulic control is produced, sealing mechanism is located between this two department twice, there is the sealing ring of multiplet, and the auxiliary seal of middle O-ring seals, when hydraulic control system hydraulic oil, which enters left and right fluid cylinder flashboard, closes chamber, piston driving or so flashboard assembly is promoted to be moved respectively to well head center along housing flashboard chamber, realize shut-in well, when high pressure oil wells, which enter left and right fluid cylinder flashboard, opens chamber, piston driving or so flashboard assembly is promoted to be moved to well head center position is left, open well head, flashboard switch is controlled by hydraulic control system reversal valve；When closing blind rams, it by sealing everywhere, that is flashboard top sealing is tightly connected with housing, before flashboard sealing with pipe and preceding sealing being tightly connected each other, being tightly connected between housing and side door, being tightly connected between piston rod and side door, the sealing of flashboard is such, one is that packing unit crimp sealing is anterior before hydraulic oil effect lower piston rod promotes flashboard, push up between packing unit and housing at the top of interference compression seal, so as to realize initial sealing, two be when having pressure in well, well pressure seals further crimp before flashboard pushed aft flashboard, well pressure promotes flashboard floating to be adjacent to the sealing surface on housing from bottom simultaneously, so as to form reliable sealing；Flashboard assembly has certain gap with flashboard room, flashboard is allowed to be fluctuated in housing chamber, in order to ensure flashboard and well inner tube intercolumniation sealed reliable, there is mutually prominent guide pad the front end of flashboard, it can be inserted into the groove of opposite flashboard, so guide pad inclined-plane produces certain centripetal thrust force in the case that tubing string is not placed in the middle in well in closing well to well casing, tubing string in well is shifted to well head center；Horizontal well double-pipe operation high temperature resistant preventer ground control unit is the visual plant of controlled level well double-pipe operation high temperature resistant preventer, it is made up of remote console and hydraulic oil pipe, remote console connects horizontal well double-pipe operation high temperature resistant preventer by high-pressure oil pipe, and control horizontal well double-pipe operation high temperature resistant preventer is applied by the hydraulic oil in its high-pressure oil pipe；Remote console is made up of base, fuel tank, pump group, accumulator group, manifold, various valve members, instrument and electric cabinet, high voltage control liquid is produced by pump group, and be stored in accumulator group, when needing open and close preventer, the high voltage control liquid from accumulator group is assigned in each control object (preventer) by the 3-position 4-way rotary valve of manifold；Its pump group is equipped with two sets of independent power sources, that is electric oil pump and hand oil pump, it is standby that accumulator group has enough highly pressurised liquids to store, meet the control requirement for the requirement closed horizontal well double-pipe operation high temperature resistant preventer and open hydraulic operated valve, electric oil pump is controlled with automatic, the control device stopped, the open and close action of each preventer by corresponding 3-position 4-way rotary valve；There is standby pressure source interface on the control manifold of remote console, pressure source can be introduced as needed within, hydraulic line has two kinds of hard tube line and soft pipeline, the two ends of its soft pipeline are the snap joint of self-sealing, realize the connection of remote console and horizontal well double-pipe operation high temperature resistant preventer, warning device is installed on remote console, to energy storage pressure, bleed pressure, the operating of oil tank liquid level and electrodynamic pump is monitored, when alarm limit of the above-mentioned parameter beyond setting, it can be spoken on remote console, visual alarm, indicate that operating personnel take measures, it can be in the low alarm of energy storage pressure, the low alarm of oil tank liquid level and electric oil pump operate abnormal alarm；Electric cabinet is fixed on remote console, the electronic motivation of connection remote control is installed in the electric line of electric cabinet, motor connects oil pump, when the electro-motor is turning, oil pump is driven to rotate, by entering oil pipe, by the oil suction in fuel tank, and be forced through flowline and be transported in accumulator group, enter oil pipe one end to be fastened on fuel tank, the other end is fastened on oil pump oil inlet, flowline one end is fixedly connected on the oil-out of oil pump, the other end connects check valve inlet, one-way valved outlet connected pipes one end；It connects oil pipe other end connection accumulator group, and so when oil pump is rotated, pressure oil is through check valve to accumulator group fuel feeding；Connection pressure controller is installed on electric cabinet, when system pressure reaches certain setting value, pressure controller automatically cuts off power supply, make electric oil pump fuel cut-off, when system pressure is depressured certain value, electric oil pump can reset automatically work, the pressure of accumulator group is so set to remain in certain scope, it is available for operation preventer to be turned on and off at any time, accumulator group installs isolating valve by oil pipe connection, overflow valve, reconnect control manifold, its manifold is connected to the import of 3-position 4-way rotary valve, as long as it pulls corresponding 3-position 4-way rotary valve handle, make "ON" can be achieved, the operation of "Off" preventer, so, the pressure oil being stored in accumulator group passes through accumulator isolation valve, oil filter, again after decompression overflow valve decompression, into control manifold, to each 3-position 4-way rotary valve oil inlet, 3-position 4-way rotary valve (liquid rotary valve) used on remote console is " 0 " type function, rotate valve handle " in " position when, each chamber is not communicated with, and when handle is in "ON" position formula "Off" position, as pressure oil enters one end of oil cylinder in preventer, the fluid of the other end makes through 3-position 4-way rotary valve oil return box；Accumulator group is the structure that multiple bladder type hydropneumatic accumulators interconnect, bladder type hydropneumatic accumulator plays storage energy in hydraulic system, steady pressure, reduce power consumption, compensation leakage is oozed, a variety of effects such as absorption pressure pulsating force and mitigation impulsive force, it is supported on the bracket of remote console securely, it is by shell, capsule and charge valve and hydraulic fluid port composition, body has charge valve on top, capsule in charge valve connection shell cavity, there is hydraulic fluid port shell lower end, in hydraulic fluid port insertion shell, insufflation gas in its capsule, usually nitrogen, composition accumulator group is combined in several bladder type hydropneumatic accumulator connections, its intracapsular nitrogen has certain pressure, when hydraulic oil is entered in shell by hydraulic fluid port, compress capsule, the air pressure of the nitrogen in capsule is set to increase, the pressure of its hydraulic oil rises to certain amplitude, conversely when using accumulator, due to the hydraulic oil in the High Voltage compressing shell in capsule, carrying oil necessarily has pressure, can by hydraulic fluid port outwardly against, pressure oil is transported to certain position by oil pipe, and electric oil pump is started working, its pressure oil is set to remain certain pressure, so as to controlled level well double-pipe operation high temperature resistant preventer；The oilhole of its full envelope side door has two, the full Fengkai oil circuit in its housing upper strata, full envelope closes oil circuit, it connects full Fengkai port connection respectively, full envelope closes port connection, full Fengkai oil circuit connects two side door oil circuits respectively by two internal orifices of the full Fengkai oil circuit of shell, this side door oil circuit mouthful is directly open to oily cylinder, two internal orifices that full envelope pass oil circuit is sealed pass oil circuit by shell entirely connect side door oil circuit respectively, this side door oil circuit reconnects oily cylinder oil circuit, oily cylinder oil circuit reconnects cylinder head oil circuit, this cylinder head oil circuit mouthful opening is passed through in oily cylinder, and the oil circuit of horizontal well double-pipe operation high temperature resistant preventer is connected by high-pressure oil pipe with the oil circuit in the ground control unit of horizontal well double-pipe operation high temperature resistant preventer, the full Fengkai of connection control is installed again on its oil circuit, full envelope closes the reversal valve of oil circuit, it is characterized in that：Housing lower floor is suspension locking mechanism, its lower floor suspension lock chambers are that control chamber realizes suspension oil pipe column and clamps box cupling, its piston for hanging locking mechanism is composite piston, it is in series by inside suspension piston and outside latching ram, not only can self-movement but also can mass motion, inside suspension piston plays promotion slips assembly suspension oil pipe, outside latching ram plays promotion locking clamp tile and clamps tubing coupling, port connection is opened in suspension, port connection is closed in suspension, locking port connection is connected one of bend pipe respectively, its bend pipe other end connects one of high-pressure oil pipe by oily nonyl, the other end of its high-pressure oil pipe is fastened on by oily nonyl on the corresponding hydraulic fluid port of horizontal well double-pipe operation high temperature resistant control device, corresponded to respectively on each oil circuit of its control device and connection control preventer suspension switch reversal valve is installed, control the reversal valve of preventer locking switch.

2. high-temperature resistant well control device for double-pipe operation in horizontal wells according to claim 1, it is characterized in that：Horizontal well double-pipe operation high temperature resistant preventer lower floor is suspension locking mechanism, its structure is, the housing lower floor left and right sides has respectively to be communicated with the main latus rectum of housing, and the main latus rectum left and right sides of the heart is symmetrical wherein, shape and structure specification identical hangs lock chambers, being hung at it in lock chambers has suspension locking assembly, suspension locking piston assembly is totally made up of suspension piston assembly and latching ram, piston assembly is hung by suspension piston loop bar, piston, hang piston and spell tight nut, O-ring seal, Yx type axle sealing rings, bar V-arrangement presss from both sides fabric building rubber compound sealing ring, flush end holding screw of slotting is constituted；It is hollow circular-tube structure to hang piston loop bar, empty in it is hollow cylindrical structure, the center line of its hollow cylinder and the center line of pipe are on the same line, it is by top, main body, bottom is constituted, top top is pin thread structure, that is the fluted structure of top peripheral, its top is excrescence, on its excrescence, lower two sides is the plane being parallel to each other, the distance that its two plane arrives pipe center line respectively is equal, the distance between its two plane is more than the outer diameter of a circle of pipe main body, groove is structure of rising as high as the banks, the groove bottom of its groove is parallel with two planes of excrescence, the central axis of the two grooves side of its groove respectively with pipe, the distance between two groove bottoms are less than the overall diameter of pipe, the vertical range that two groove bottoms arrive pipe center line respectively is equal, there is recessed open slot on the perisporium mouthful on its top, its depth and width are set as needed, the groove bottom of its open slot is vertical with two planes of excrescence, and with its pipe central axis, its two groove side is vertical with groove bottom respectively, the internal diameter at top is more than the internal diameter of pipe, its its outer end side face of bottom for hanging piston loop bar is public screwed tooth structure, its the inner is cylindrical structure, the outer circumference diameter of its outer end public affairs screwed tooth structure is less than inner cylinder outer circumference diameter, its inner cylinder outer circumference diameter is less than the outer circumference diameter of main body again, Zhoukou City is with diameter greater than pipe interior diameter in its public screwed tooth structure；Suspension piston gets rid of tight nut for cyclic structure, the diameter of its inner peripheral surface is equal with the interior diameter for hanging piston loop bar main body, the center line of its inner peripheral surface and outer circumference surface is on the same line, it is planar annular outside its cyclic structure, the central axis of its planar annular and cyclic structure, its opposite side relative with planar annular is hollow toroid slot structure, the annular groove bottom of its hollow toroid slot structure is parallel with planar annular, its center line gets rid of the center line of tight nut on the same line with suspension piston, the diameter of the inner ring periphery of its annular groove and the equal diameters of Zhoukou City in the bottom of suspension piston loop bar, it is female screwed tooth structure on its outer shroud periphery, the external diameter of the outer peripheral face of the public screwed tooth structure of bottom of the diameter of its outer shroud periphery with hanging piston loop bar is equal, the female thread for making the male thread of suspension piston loop bar get rid of tight nut with suspension piston is mutually screwed up, in hollow toroid groove, the distance between outer shroud periphery is identical with the thickness of suspension piston loop bar bottom loop bar mouthful, connected between the inner peripheral surface of cyclic structure and the inner ring periphery of hollow toroid groove for planar annular, for internal spherical surface, also planar annular is connected between the outer circumferential surface of its cyclic structure and the outer shroud periphery of hollow toroid groove, for outer annular surface, and two annular connection planes are parallel to each other, and it is parallel with cyclic structure planar annular, the distance of its internal spherical surface to outer planar annular is less than outer annular surface to the distance of planar annular；Suspension piston, which is spelled, several flush end holding screw circular hole break-through of slotting between the planar annular and opposite side outer annular surface of tight nut, it is made up of interior mother rib lateral rotundum and outer mother rib lateral rotundum, the diameter with diameter greater than interior mother rib lateral rotundum of its outer mother rib lateral rotundum, fluting flush end holding screw is made up of screw cap and screw body, the diameter with diameter greater than screw body of its screw cap, the diameter of its interior mother rib lateral rotundum is identical with the diameter of screw body, the diameter of its outer mother rib lateral rotundum is identical with the overall diameter of screw cap, and the outer end of screw body is public screwed tooth structure；Suspension piston is annulus column construction, internal orifice plane is parallel to each other with collar extension plane, and with the central axis of annulus column construction, there are two hollow toroid grooves on the inner peripheral surface of its inner mouth plane side, that is rubber ring recess, the shape of two hollow toroid groove, size, depth, structure is identical, its center line is on the same line, and the center line of its center line and piston is on the same line, its collar extension plane inwardly has annular opening, its annular opening is formed by connecting by Li Kou faces and circumferential surface, its Li Kou face is parallel with collar extension face, and the center line in Li Kou faces and the center line in collar extension face are on the same line, interconnected between Li Kou faces and collar extension face by annular circumferential face, the center line of its ring-shaped periphery also with the center line of piston on the same line, with diameter greater than or equal to suspension piston get rid of the external diameter of tight nut in its annular circumferential face, if having fundatrix screw thread hole on its Li Kou face, the size of its screw thread hole, depth, structure is identical, and its center line is into being parallel to each other, with the centerline parallel of piston, distance to the center line of piston is equal, and it is corresponding with the holding screw circular hole quantity specifications that suspension piston is got rid of on tight nut, the distance that the holding screw circle hole centreline extremely suspension piston that the distance of the center line of female screw thread hole of piston to piston centreline is got rid of with suspension piston on tight nut gets rid of tight nut center line is equal；Its latching ram assembly is by latching ram bar, latching ram, latching ram gets rid of tight nut, O-ring, flush end holding screw of slotting is constituted, its latching ram bar is loop bar structure, by top, body, connect piston portion and outside composition, top, body is cylinder, its top outer diameter is more than the external diameter of body, its center line is on same straight line, connection piston portion is two parts, inside connects the cylindrical axis body of piston for set, external connection latching ram gets rid of the cylindrical thread body of tight nut, axis body connects with thread body phase, the diameter of its thread body is less than the diameter of axis body, and two center line on the same line, and with the center line of latching ram bar on the same line, its axis body other end is connected with body, its axis body diameter is less than the diameter of body, one end of the external cylindrical bar of thread body other end connection latching ram bar；Latching ram gets rid of tight nut for cirque structure, it is interior, outer peripheral face is periphery, two sides be parallel to each other and with the planar annular of cirque structure central axis, the center line of its inner peripheral surface and the center line of outer circumference surface are on the same line, it is screwed tooth structure on its inner peripheral surface, its interior diameter is identical with the overall diameter of loop bar thread body, and two the distance between plane it is identical with the thickness of thread body, male thread on thread body is mutually screwed up with female thread on inner peripheral surface, latching ram gets rid of some circular holes for having its two plane of break-through between two planes of tight nut, the center line of its some circular hole is parallel to each other, and the centerline parallel of tight nut is got rid of with latching ram, the circular hole that latching ram is spelled between two planar annulars of tight nut is referred to as flush end holding screw circular hole of slotting, it is made up of interior mother rib lateral rotundum and outer mother rib lateral rotundum, the diameter with diameter greater than interior mother rib lateral rotundum of its outer mother rib lateral rotundum, fluting flush end holding screw is made up of screw cap and screw body, the diameter with diameter greater than screw body of its screw cap, the diameter of its interior mother rib lateral rotundum is identical with the diameter of screw body, the diameter of its outer mother rib lateral rotundum is identical with the overall diameter of screw cap, the outer end of screw body is public screwed tooth structure；Latching ram is annulus column construction, internal orifice plane is parallel to each other with collar extension plane, and with the central axis of annulus column construction, there are two hollow toroid grooves on the inner peripheral surface of its inner mouth plane side, that is rubber ring recess, the shape of two hollow toroid groove, size, depth, structure is identical, its center line is on the same line, and the center line of its center line and piston is on the same line, its collar extension plane inwardly has annular opening, its annular opening is formed by connecting by Li Kou faces and circumferential surface, its Li Kou face is parallel with collar extension face, and in mouth center line and collar extension face center line on the same line, interconnected between Li Kou faces and collar extension face by ring-shaped periphery, the internal diameter in its annular circumferential face gets rid of the external diameter of tight nut more than or equal to latching ram, the center line of its ring-shaped periphery also with the center line of piston on the same line, if having fundatrix screw thread hole on its Li Kou face, the size of its screw thread hole, depth, structure is identical, and its center line is into being parallel to each other, with the centerline parallel of piston, distance to the center line of piston is equal, and it is corresponding with the holding screw circular hole quantity specifications that suspension piston is got rid of on tight nut, the distance that the holding screw circle hole centreline extremely suspension piston that the distance of the center line of female screw thread hole of piston to piston centreline is got rid of with suspension piston on tight nut gets rid of tight nut center line is equal；Slips spring catch, it is made up of cap body, pin main body, the part of thread body three, cap body is cylinder, it is fixedly connected with one end of pin main body, it is also cylindrical structure that it, which sells main body, the pin main body other end is fixedly connected thread body, thread body is cylindrical structure, be public screwed tooth structure on its outer peripheral face, its cap body, pin main body, thread body center line on the same line, the diameter of cap body is identical with the top inside diameter of suspension piston bush tube rod；There is box structure on the pedestal of slip spider, slips structure, connect circular hole and watt holder structure, box structure is to be risen as high as the banks in " convex " shape, it is made up of inside groove and water jacket, have on the outside of pedestal in convex and rise as high as the banks, laterally pass pedestal, its groove bottom is plane, the width of its inside groove is more than the width of exterior notch, the excrescence width of top pin thread of the width of its inside groove with hanging piston loop bar is identical, the width of its exterior notch, the groove of top pin thread of the depth with hanging piston loop bar is identical, so its pin thread can draw its opening insert its box in match, the outstanding slips structure in bottom of another inner side relative with " convex " shape groove of pedestal, it is connected with pedestal middle inside plane, its plane is vertical with the groove bottom risen as high as the banks in box convex, its top is the interior semicircle side face under concaving, it is slips toothing on its interior semicircle side face, tangent plane is vertical with the groove bottom of " convex " shape groove in the middle of interior semicircle side face, and with the middle tangent plane of slip spider at grade, the top of the inner side of base is inner side plane, its plane and the middle plane of watt seat are vertically connected, it is parallel with the groove bottom of " convex " shape groove, there is spring pin hole to interlink between the groove bottom of " convex " shape groove and watt seat inner side plane, its pin-and-hole is circular port, its internal diameter is equal with the overall diameter of the pin main body of spring catch, its center line is vertical with groove bottom, and with the center line of groove bottom on the same line；The outside of slips piece is plane, its relative inner side is the interior semicircle side face under concaving, its medial plane is vertical with the middle tangent plane of interior semicircle side face, and the center tangent plane of wherein anxious face and slips piece is at grade, it is slips toothing on its interior semicircle side face, there is female thread circular hole of connecting spring pin its outside lower end, the internal diameter of its circular hole is equal with the external diameter of the public thread in the top of springlock, its inner circumferential is screwed tooth structure, it can mutually be screwed up with its public thread, the center line of its circular hole is vertical with medial plane, and with slips center tangent plane at grade, and the distance of center of circular hole to its lower plane is equal with the vertical range of center line to the mid-plane on the inside of slip spider of slip spider circular hole, the middle tangent plane of the interior semicircle side face of the circle hole centreline of its slip spider and its outside is at grade, the diameter of the interior semicircle side face with diameter greater than slip spider of the interior semicircle side face of its slips piece, it needs setting according to specification；The minimum thickness of the medial surface of slips piece and semicircle side face in it, less than the minimum range of plane of the interior semicircle side face to same upper lateral part of slip spider；Be connected one end of spring on the internal spherical surface of the cap of spring catch, spring housing is connected in the pin main body of spring catch, in the spring catch circular hole that spring catch is injected to slip spider, and pass circular hole, connection slips piece is installed in the mid-plane on the outside of slip spider, its slips piece outerplanar is with the outer outer upper plane of slip spider mutually by connecting, the thread body of spring catch is screwed into the circular hole of slips piece, tighten up and mutually screw up, latching ram bar is packed into it by outer end to hang in piston loop bar, and pass suspension piston loop bar, the length of the body of its latching ram bar is more than the length of suspension piston loop bar main body, with specific reference to need setting, the pin thread on piston loop bar top will be hung, in the box for injecting slip spider, the cap and pin main body of its spring catch, pierced into by the open slot on suspension piston loop bar top ports wall in the chamber of suspension piston loop bar top, the top of its latching ram bar of the crown post of its spring catch, slips assembly is installed into housing slips chamber, it, which hangs, installed in the main body of piston loop bar the tight lock side door of suspension, certainly there is sealing ring connection between side door and loop bar main body, then it to hang and pack into piston on the bottom of piston loop bar, in its certain piston O-ring seal is respectively mounted in two annular grooves, make piston closely coupled with loop bar, suspension piston is got rid of into tight nut on the outer end thread of suspension piston loop bar to screw up thereon, got rid of in suspension piston and installed in the circular hole of tight nut fluting flush end holding screw, it is set to be connected with the thread circular hole on piston, tightened and be fixed on screw thread hole, piston is set to be fixedly connected on loop bar, its loop bar bottom outer end internal orifice and suspension piston are got rid of between the inner plane between tight nut, connection Yx type axle sealing rings are installed；So its spring catch just pierces into the circular hole of slip spider and passes circular hole, and the male thread of its spring catch is screwed up on the female thread of box of slips piece, spring catch is set to be fixedly connected with slips piece, it, which is hung on the perisporium mouthful on piston loop bar top, recessed open slot, its depth is set as needed, its two sides distance is greater than or equal to the diameter of spring lock nut, and the outer end of latching ram bar is penetrated from piston loop bar top, and its main body pierces into loop bar and closely coupled with loop bar main body；Piston portion is connected in latching ram bar, connect installation locking piston, O-ring is respectively embedded into two ring fillisters of latching ram, the outer end of latching ram from latching ram bar is inserted in again, the connection piston portion of latching ram and latching ram bar is set closely to connect, latching ram is got rid of the small circular hole of tight nut its inwall side diameter to latching ram direction again, it is inserted in its top the outer end for drawing latching ram bar, it is set to be connected with piston rod, turn latching ram and get rid of tight nut, its female thread is set mutually to screw up and tighten with the male thread on latching ram bar, make latching ram get rid of tight nut to be squeezed on the indent annular mouth wall of piston, relied closely company with piston, get rid of and be connected between the circular hole of tight nut and the screw thread hole of corresponding latching ram with fluting flush end holding screw in latching ram, make latching ram get rid of tight nut with latching ram to be fixedly connected；So its slips total performance is installed into lower floor's slips chamber of horizontal well double-tube working blowout preventer, and slips cavity configuration is the cavity body structure that its slips assembly can back and forth move linearly in slips chamber, and slips side door passes through mid-mounting latching ram circular hole, in the main body for being tightly placed in suspension piston loop bar, that is the external diameter of main body of the internal diameter of its slips side door mid-mounting latching ram circular hole with hanging piston loop bar is equal, and hanging on latching ram circular hole internal perisporium has several hollow toroid grooves, sealing ring is respectively embedded into its several spill annular groove, make tight seal between suspension piston rod and side door, its side door is screwed by penetrating the circular hole of side door and is connected on housing, also there is sealing ring connection between its side door and housing, make its tight seal between housing.

3. the high-temperature resistant well control device for double-pipe operation in horizontal wells according to claim 1, claim 2, it is characterized in that：There are two oil transportation holes in its perisporium of suspension locking cylinder cylinder barrel, one oilhole is longitudinally penetrated from medial surface to lateral surface, another oilhole is from medial surface entrance, longitudinal direction is penetrated to oily cylinder, oilhole in the middle of i.e., there is horizontal straight hole to penetrate perisporium in the middle of it, it is communicated with longitudinal oilhole, its position of horizontal oilhole on cylinder tube is set as needed；There are three oilholes on slips side door, two of which oilhole mouth is connected with two oilholes mouthful of oil cylinder respectively, its another oilhole mouthful is passed through in cylinder tube, three oilholes mouthful corresponding with housing are connected three hydraulic fluid ports of its slips side door respectively, lower floor opens oil circuit hole for suspension in housing wall, oil circuit hole and locking oil circuit hole are closed in suspension, its each oil circuit hole is each independent, its oil circuit hole collar extension is located on the outside of outer casing frontispiece, internal orifice is respectively two, it is located at the outside for the one side that shell connects with side door respectively, and internal diameter is equal with the intraoral footpath of side door oil circuit, the coupled oil circuit mouthful specification of the corresponding connected side door of each oil circuit inn difference and position are corresponding, the port connection that each oil circuit collar extension of lower floor of its shell is respectively fixedly connected with, i.e. it connects suspension and opens port connection respectively, port connection and locking port connection are closed in suspension；There is an oil circuit in suspension locking cylinder head wall, one hydraulic fluid port connects with cylinder tube hydraulic fluid port, another hydraulic fluid port leads in cylinder barrel, it hangs locking cylinder head oilhole and is passed through the oily cylinder of suspension locking, the suspension of its lower floor opens oil circuit and connects two side door oil circuits respectively by two internal orifices of the full Fengkai oil circuit of shell, this side door oil circuit mouthful is directly open to oily cylinder, two internal orifices that suspension pass oil circuit is sealed pass oil circuit by shell entirely connect side door oil circuit respectively, this side door oil circuit reconnects oily cylinder oil circuit, oily cylinder oil circuit reconnects cylinder head oil circuit, its cylinder head oil circuit mouthful opening is passed through in oily cylinder, locking oil circuit connects side door oil circuit respectively by two internal orifices of shell, this side door oil circuit reconnects the locking oil circuit of cylinder barrel；There is rubber seal connection between its each oil circuit interface, make tight seal between each oil circuit, there is sealing ring connection between each part of shell, side door, cylinder barrel, cylinder head, make its tight seal, its bend pipe, port connection, oily nonyl, high-pressure oil pipe, control device are tight seal connection between exporting each part.

4. high-temperature resistant well control device for double-pipe operation in horizontal wells according to claim 1, it is characterized in that：All seals of horizontal well double-pipe operation high temperature resistant preventer valve, and high-pressure oil pipe are high temperature resistant material and are made.

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