CN204252973U - Split type downhole choke ware - Google Patents
Split type downhole choke ware Download PDFInfo
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- CN204252973U CN204252973U CN201420672529.3U CN201420672529U CN204252973U CN 204252973 U CN204252973 U CN 204252973U CN 201420672529 U CN201420672529 U CN 201420672529U CN 204252973 U CN204252973 U CN 204252973U
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Abstract
The utility model belongs to the technical field of the oil field exploitation, a throttling pressure reduction device that natural gas exploitation in-process used is related to, concretely relates to split type throttle in pit, including throttle main part and the throttle air cock device of butt joint in the throttle main part, air cock and body are separately put in and salvage, only need salvage and change the air cock during the transfer can, solved put in and salvage the problem of difficulty after the large diameter ization, to 41/2Gas well completed by oil pipe can salvage air tap out and directly enterThe horizontal injection type flow controller is simple and convenient to install and operate, and split operation can avoid the generation of a plurality of underground faults.
Description
Technical field
The utility model belongs to oilfield exploitation technical field, relates to the reducing pressure by regulating flow device used in a kind of gas exploitation course, is specifically related to a kind of split type underground throttle device.
Background technology
In natural gas extraction manufacturing process, because borehole pressure is higher, need reducing pressure by regulating flow device is installed, to control the gas production of gas well, reach the object of steadily producing.According to Joule-Thomson effect natural gas being reduced suddenly by pressure during flow nipple, rapid spatial expansion, significant endothermic effect can be produced, temperature reduces, because the reduction of temperature is when reaching Investigation On The Hydrate Formation Conditions, there will be condensation phenomenon around valve, the time has been grown, valve will be blocked, affect natural gas and normally produce.
Block up to solve valve and improve natural gas wellhead temperature, realize ground mesolow, do not heat, do not note alcohol gas collection, by throttling arrangement volume-diminished, design underground throttle device, underground throttle device comprises a few part composition such as setting packing element, grappling slips, restriction choke valve.Installation is invested in the oil pipe of gas well middle and lower part by steel wire operation.Temperature after utilizing stratum energy to compensate natural gas via throttling valve reducing pressure by regulating flow, achieves the mesolow ground gas collection pattern that well head does not heat, do not note alcohol, reduces gas field development cost.
There is following shortcoming in this mode:
(1) at present restriction choke be all all-in-one-piece, install throw in, be all that entirety is thrown in together, salvaged when salvaging, can not by valve and body separately in down-hole.Sometimes can there is the poorly sealed phenomenon of packing element in down-hole, cause throttling failure, just need restriction choke entirety to rise out, carry out replacing parts or keep in repair.Part gas well needs to carry out gas product flow readjustment according to fine-grained management and peak period air feed in addition, now needs to change valve, also will by restriction choke entirety from underground fishing out.Due to the complicated structure of overall restriction choke, its gross weight is more much bigger than the weight of valve, should remove the grappling of slips on oil pipe in the process of salvaging, and removes packing element again and is combined with the sealing of oil pipe, this just relates to multipart action perhaps, just likely breaks down.Again by their grapplings and sealing when again going into the well, working programme is just much complicated.When entirety trips out, some restriction choke there will be and drags for motionless situation, can not successfully by it from underground fishing out, situation about even salvaging steel wire may be broken, so just cause down-hole accident, more complicated working measure must be taked process, consume more manpower and materials, not only extend the activity duration, affect gas well liquid loading, also can increase operating expenses.
(2) early stage completion oil pipe is mostly 27/8 〞, in recent years along with the development of fracturing technique, for adapting to the needs of the volume fracturing of huge discharge, completion tubular column size progressively becomes large, 31/2 conventional at present 〞 oil pipe, minority has 41/2 〞's, use in this case monolithic restriction choke because of its diameter large, Heavy Weight throw in salvage extremely difficult.
(3) along with gas well Development life increases, part gas well has arrived the production later stage, and self fluid-carrying capability declines, and need supporting corresponding water pumping gas production measure, if monolithic restriction choke is salvaged unsuccessfully, other measure cannot be implemented.
Utility model content
The purpose of this utility model be overcome above-mentioned existing restriction choke in use more, the complicated operation of technique, easily there is the problem of down-hole fault.
For this reason, the utility model provides a kind of split type underground throttle device, comprises restriction choke main body and is docked at the restriction choke air valve device in restriction choke main body.
Described restriction choke main body comprises seating nipple, fishing socket, tube connector, card tooth seat, card block teeth, back-up block, interior pipe, packing element and piston, described card tooth seat is the stepped cylindrical body of inside and outside equal tool, and have rectangular through holes in the middle part of card tooth seat, card tooth seat outer wall top is set with pressure ring, stage clip and top pawl from top to bottom successively; Fishing socket bottom is spun by screw thread and outside, card tooth seat upper end, and it is inner that tube connector is sleeved on card tooth seat, and the bottom of seating nipple is spun by screw thread and outside, tube connector upper end, and seating nipple is set in fishing socket inside; Card block teeth and back-up block are installed in the rectangular through holes of card tooth seat, back-up block bottom is fixed in the rectangular through holes of card tooth seat, and upper outside is inclined-plane, is provided with card tooth outside card block teeth, the ramp structure matched with the inclined-plane of back-up block in inner side, the lower end of described top pawl presses card block teeth upper end; Described interior pipe is divided into interior pipe and lower interior pipe, and the lower end of tube connector is socketed in the outer wall upper end of interior pipe, and the upper end of piston is arranged on the outer wall lower end of upper interior pipe by screw thread, the bottom of piston is sleeved on the outer wall upper end of lower interior pipe; Be set with inner ring outside described interior pipe, be socketed with packing element outside inner ring, the lower end of packing element is provided with urceolus.
In lower, pipe lower end is connected with interior connecting ring, and interior connecting ring is provided with the screen cloth of tubular, screen cloth, built with spiral support spring and catch, catch is evenly equipped with the aperture that diameter is millimeter; Filter sand guard is evenly equipped with the longitudinal slot of mm wide together with being linked by the lower end of screw thread and urceolus and interior connecting ring on filter sand guard.
Described restriction choke air valve device comprises and drags for head, pressure cap, pipe, thrust stage clip, baffle ring, movable lock dog, valve seat, valve and guide head in support, and in described support, pipe is cylindrical body, drags for a lower end and is connected to and supports interior pipe upper end; Valve seat is the cylindrical body that inside has step, and its upper end has external screw thread, and lower end has internal thread, and middle and upper part has cannelure, and the bottom in lower external face and endoporus all has seal groove; In the upper end of pressure cap, valve seat is enclosed within and supports on pipe, thrust spring, baffle ring are sleeved on the top of valve seat successively, active lock is packaged to be clamped by baffle ring in the cannelure of valve seat, valve is arranged on valve seat lower inside, guide head is arranged on valve seat interior lower end, and valve clamps by guide head upper end.
Described back-up block outer upper is inclined-plane, and bottom is provided with deep-slotted chip breaker and boss, and back-up block is closely fixedly mounted by the step of this deep-slotted chip breaker and boss and inside, card tooth seat lower end.
Described inner ring is divided into upper inner ring and lower inner ring; packing element corresponding is with it divided into packing element and lower rubber cylinder; and its end is all provided with protection ring; the upper and lower side of upper packing element is respectively arranged with ring under packing element pressed on ring and upper packing element; the upper and lower side of lower rubber cylinder is respectively arranged with ring under lower rubber cylinder pressed on ring and lower rubber cylinder; upper packing element pressed on ring is threaded connection card tooth seat lower end; under upper packing element, ring is threaded connection lower rubber cylinder pressed on ring; under lower rubber cylinder, ring is threaded connection urceolus upper end, and under lower rubber cylinder, ring inside is provided with apical ring.
Described piston be have outer ladder cylindrical body and external surface has thorn shape buttless thread, the outer ladder of piston is provided with opening lock ring, and opening lock ring is positioned at ring lower end under lower rubber cylinder, the lower end of opening lock ring is provided with stirs ring, and this is stirred ring and is positioned at outer barrel.
Described opening lock ring is the ring bodies with longitudinal opening, has outer chamfering at its upper end, has barb-shaped buttless thread on the surface within it.
Described internal piston is provided with annular groove, is provided with locking distinguish in this annular groove, and described locking distinguish is the ring bodies that outside has step, and its middle and lower part has longitudinal opening.
The described sidewall dragging for head is installed with pinning, and in pinning will drag for head and support, pipe locks.
The sidewall of described valve seat is installed with unblock shear pin, unlocks shear pin and valve seat and pipe in support are locked.
The sidewall of described fishing socket is installed with shear pin, and fishing socket and card tooth seat lock by shear pin.
The sidewall of described card tooth seat has through hole, is provided with lock dog in this through hole, described lock dog end stretches into tube connector and card tooth seat and tube connector is locked.
Described upper interior pipe upper end arranged outside has annular groove, and this annular groove is built with snap ring, and described snap ring is the annulus that lower end has flanging.
The beneficial effects of the utility model:
(1) install to down-hole easily, easy to operate.By controlling lowering velocity on the ground, can realize, in down-hole, this device is installed, utilizing the parts such as stage clip, card block teeth, back-up block, it can be arranged on any design attitude in down-hole of gas-producing well.
(2) packing is convenient, and sealing is reliable.Piston, the space that between piston urceolus and lower interior pipe, formation one is airtight, its internal pressure is 1 atmospheric pressure, under in well after with the larger pressure reduction of pressure initiation in pit shaft, utilize this pressure reduction packing element can be compressed, closely packing is firmly by pit shaft to make the packing element heaved.According to actual conditions, suitable piston area can be designed.
(3) in the process of going into the well, entangled by the top of dropping feeder by card block teeth, make card block teeth be in the state of contraction, can guarantee that card block teeth and tube inner wall exist a larger spacing all the time, the problem that can not block, avoids card accident in the wellbore occurs.
(4) trip out in well conveniently.When needs trip out restriction choke in well, only will need drag for head with throw in catcher and catch firmly and carry, by shear pin cut-out, after tube connector moves, the packing of the suspension effect of card block teeth and packing element can be removed, restriction choke is put forward from down-hole.In the process tripped out, can not displacement be produced between piston and urceolus, lower interior pipe, even if corrosion occurs between them or is blocked by silt, also can not affect and trip out, avoid having an accident.
(5) when only needing to change valve, can be tripped out from down-hole by valve by valve fishing device, remainder still can stay down-hole, avoids repeating fixing card tooth and cartridge, can reduce operation procedure, the probability that minimizing accident occurs.
(6) owing to being translation when card block teeth outwards move, Ka Ya contacts with being engaged with tube inner wall be uniform, and card tooth is stressed more even.
(7) applied widely.Each parts in this device can bear high pressure, are applicable to work in deep-well or high-pressure gas well, also may be used for gas production in inclined shaft.
Accompanying drawing explanation
Fig. 1 is the utility model overall structure schematic diagram.
Fig. 2 is restriction choke air valve device structural representation.
Description of reference numerals: 1, drag for head; 2, pinning; 3, pressure cap; 4, shear pin is unlocked; 5, interior pipe is supported; 6, thrust stage clip; 7, baffle ring; 8, movable lock dog; 9, valve seat; 10, seating nipple; 11, valve; 12, guide head; 13, fishing socket; 14, shear pin; 15, lock dog; 16, pressure ring; 17, stage clip; 18, pawl is pushed up; 19, tube connector; 20, card tooth seat; 21, card block teeth; 22, back-up block; 23, snap ring; 24, upper interior pipe; 25, upper packing element pressed on ring; 26, protection ring; 27, packing element; 28, inner ring; 29, ring under upper packing element; 30, lower rubber cylinder pressed on ring; 31, ring under lower rubber cylinder; 32, piston; 33, apical ring; 34, distinguish is locked; 35, opening lock ring; 36, ring is stirred; 37, urceolus; 38, lower interior pipe; 39, filter sand guard; 40, interior connecting ring; 41, support spring; 42, screen cloth; 43, catch.
Detailed description of the invention
Below with reference to accompanying drawing, the utility model is described in further details.
Throw in solve after monolithic underground throttle device ever-larger diameters, salvage difficult, adjust the problem must salvaged when producing inconvenient and later stage water pumping gas production, valve and body are separated and designs, input is installed in the oil pipe of gas well middle and lower part, separately valve can be taken out in well when needs are adjusted and produced, simplify operation procedure, operation procedure and accident Probability can be reduced, install to down-hole or trip out conveniently, even if there is corrosion between some parts or blocked by silt, also can not affect and trip out, avoid having an accident.Be suitable for gas production in deep-well, high-pressure gas well or inclined shaft.
Embodiment 1:
The present embodiment provides a kind of split type underground throttle device, as shown in Figure 1, comprises restriction choke main body and is docked at the restriction choke air valve device in restriction choke main body.
Restriction choke main body comprises seating nipple 10, fishing socket 13, tube connector 19, card tooth seat 20, card block teeth 21, back-up block 22, interior pipe, packing element 27 and piston 32, fishing socket 13 bottom is spun by screw thread and outside, card tooth seat 20 upper end, it is inner that tube connector 19 is sleeved on card tooth seat 20, the bottom of seating nipple 10 is spun by screw thread and outside, tube connector 19 upper end, and seating nipple 10 is set in fishing socket 13 inside; Card block teeth 21 and back-up block 22 are installed in the rectangular through holes of card tooth seat 20, back-up block 22 bottom is fixed in the rectangular through holes of card tooth seat 20, upper outside is inclined-plane, card tooth is provided with outside card block teeth 21, the ramp structure matched with the inclined-plane of back-up block 22 in inner side, described tube connector 19 lower end connects described interior pipe, and inner pipe end is connected with piston 32, is socketed packing element 27 outside interior pipe.
In the present embodiment, main body and the valve of restriction choke are provided separately, not integral, such can realize split type installation throw in, salvage, and when valve changed by needs, only need valve part to trip out, need not entirety trip out, which save cost, the fault easily caused because of multi-part action can also be avoided.
Embodiment 2:
Optimal enforcement is carried out on the basis of embodiment 1, and card tooth seat 20 is the stepped cylindrical body of inside and outside equal tool, and in the middle part of card tooth seat 20, circumference has 4 rectangular through holes, and card tooth seat 20 outer wall top is set with pressure ring 16, stage clip 17 and top pawl 18 from top to bottom successively; Fishing socket 13 is the stepped cylindrical body of outside tool, and fishing socket 13 bottom is spun by screw thread and outside, card tooth seat 20 upper end, and fishing socket 13 and card tooth seat 20 is locked by shear pin 14; It is inner that tube connector 19 is sleeved on card tooth seat 20, the sidewall of card tooth seat 20 has through hole, is provided with lock dog 15 in this through hole, and described lock dog 15 end stretches into tube connector 19 and card tooth seat 20 and tube connector 19 locked.The bottom of seating nipple 10 is spun by screw thread and outside, tube connector 19 upper end, and seating nipple 10 is set in fishing socket 13 inside; 4 card block teeth 21 and 4 back-up blocks 22 are installed in the rectangular through holes of card tooth seat 20, back-up block 22 bottom is fixed in the rectangular through holes of card tooth seat 20, upper outside is inclined-plane, card tooth is provided with outside card block teeth 21, the ramp structure matched with the inclined-plane of back-up block 22 in inner side, the lower end of described top pawl 18 presses card block teeth 21 upper end; Described interior pipe is divided into interior pipe 24 and lower interior pipe 38, and the lower end of tube connector 19 is socketed in the outer wall upper end of interior pipe 24, and the upper end of piston 32 is arranged on the outer wall lower end of upper interior pipe 24 by screw thread, the bottom of piston 32 is sleeved on the outer wall upper end of lower interior pipe 38; Be set with inner ring 28 outside described interior pipe 24, be socketed with packing element 27 outside inner ring 28, the lower end of packing element 27 is provided with urceolus 37, urceolus 37 is cylindrical body that an inside has step, its upper end has internal thread, and its lower end has external screw thread, is provided with sealing ring in the seal groove in its underpart.
In lower, pipe 38 lower end is connected with interior connecting ring 40, interior connecting ring 40 is provided with the screen cloth 42 of tubular, they are fixed together by available galvanized wire or clip, screen cloth 42 is built with spiral support spring 41 and catch 43, the often spacing of enclosing between steel wire of support spring 41 is greater than gauge of wire, catch 43 is evenly equipped with the aperture that diameter is 2 millimeters; Filter sand guard 39 is evenly equipped with the longitudinal slot of 2 mm wides together with being linked by the lower end of screw thread and urceolus 37 and interior connecting ring 40 on filter sand guard 39.
Embodiment 3:
In the present embodiment, as shown in Figure 2, restriction choke air valve device comprise drag for 1, pressure cap 3, support in pipe 5, thrust stage clip 6, baffle ring 7, movable lock dog 8, valve seat 9, valve 11 and guide head 12, in described support, pipe 5 is cylindrical body, and upper end has external screw thread, and lower end has internal thread, 4 longitudinal elongated slots are evenly equipped with in its middle and upper part, elongated slot through valve seat 9 sidewall, its middle and lower part has 3 road sealing grooves, has 2 road sealing grooves in its endoporus middle and lower part.Drag for 1 lower end and be connected to pipe 5 upper end in support, and by pinning 2, they are locked together, valve seat 9 is the inner cylindrical body with step, and its upper end has external screw thread, and lower end has internal thread, and middle and upper part has cannelure, and the bottom in lower external face and endoporus all has seal groove, pressure cap 3, in the upper end of valve seat 9 is enclosed within and supports on pipe 5, and by unlocking shear pin 4, just both are fixed together, thrust spring 6, baffle ring 7 is sleeved on the top of valve seat 9 successively, movable lock dog 8 has 4, to be contained in the cannelure of valve seat 9 and to be clamped by the groove be arranged in baffle ring 7, valve 11 is arranged on valve seat 9 lower inside, valve 11 has centre bore, the size of center-hole diameter controls gas production, respectively sealing ring is housed in 2 seal grooves in the endoporus of valve seat 9, valve seat 9 cylindrical to have in 3 road sealing grooves and sealing ring is installed, guide head 12 is arranged on valve seat 9 interior lower end, and valve 11 clamps by guide head 12 upper end.
Embodiment 4:
Back-up block 22 outer upper is inclined-plane, and bottom is provided with deep-slotted chip breaker and boss, and back-up block 22 is closely fixedly mounted by the step of this deep-slotted chip breaker and boss and inside, card tooth seat 20 lower end.
Inner ring 28 is divided into upper inner ring and lower inner ring; packing element 27 corresponding is with it divided into packing element and lower rubber cylinder; and its end is all provided with protection ring 26; the upper and lower side of upper packing element is respectively arranged with ring 29 under packing element pressed on ring 25 and upper packing element; the upper and lower side of lower rubber cylinder is respectively arranged with ring 31 under lower rubber cylinder pressed on ring 30 and lower rubber cylinder; upper packing element pressed on ring 25 is threaded connection card tooth seat 20 lower end; under upper packing element, ring 29 is threaded connection lower rubber cylinder pressed on ring 30; under lower rubber cylinder, ring 31 is threaded connection urceolus 37 upper end, and under lower rubber cylinder, ring 31 inside is provided with apical ring 33 by screw thread.Under packing element, ring 29 is ring bodies with interior step, has the through hole that diameter is 3-5 millimeter in the middle part of it, ring 31 has the through hole that diameter is 3-5 millimeter, have interior chamfering in its lower end under lower rubber cylinder.Be installation 2 packing elements in the present embodiment, according to the concrete condition of oil well, when borehole pressure is less, can install 1 packing element, when borehole pressure is larger, also can install 3,4 packing elements, its structure can according to above-mentioned the like.
Embodiment 5:
Piston 32 is for having the cylindrical body of outer ladder and external surface having thorn shape buttless thread, the outer ladder of piston 32 is provided with opening lock ring 35, and opening lock ring 35 is positioned at below the chamfering of ring 31 lower end under lower rubber cylinder, the lower end of opening lock ring 35 is provided with stirs ring 36, and this is stirred ring 36 and is positioned at urceolus 37 inside; Opening lock ring 35 is the ring bodies with longitudinal opening, has outer chamfering at its upper end, has barb-shaped buttless thread on the surface within it.
Piston 32 inside is provided with annular groove, is provided with locking distinguish 34 in this annular groove, and described locking distinguish 34 is the outside ring bodies with step, and its middle and lower part has longitudinal opening.Locking distinguish 34 is arranged in piston 32 endoporus, the inserted link of dropping feeder is inserted in the centre bore of locking distinguish 34 before going into the well, the annular boss of locking distinguish 34 lower end is made to be placed in the annular groove in piston 32, and withstood by the upper end of lower interior pipe 38, in the process of going into the well, make piston 19 and lower interior pipe 25 can not relative movement.
Embodiment 6:
In upper, pipe 24 upper end arranged outside has annular groove, and this annular groove is built with snap ring 23, and described snap ring 23 is annulus that lower end has flanging.Snap ring 23 is cut into 4 lobes along its orthogonal diameter, the snap ring 23 being divided into 4 lobes is arranged in the annular groove on upper interior pipe 24 top, the upper and lower sides of annular groove is chamfering, the lower end of tube connector 19 is enclosed within the top of upper interior pipe 24, the snap ring 23 being divided into 4 lobes is entangled by the lower end of tube connector 19, make snap ring 23 be fixed in the annular groove of interior pipe 24, in the seal groove of upper interior pipe 24 upper end, be provided with sealing ring, snap ring 23 lower surface seat is on packing element pressed on ring 25 upper surface.
When restriction choke is installed to down-hole, first enter down the agent set of restriction choke.First stage clip 17 is made to compress, make top pawl 18 and card block teeth 21 move, and top pawl 18 and card block teeth 21 are aligned one by one, the sleeve of dropping feeder is utilized to be entangled on 4 of this restriction choke card block teeth 21 tops, make them can not slide downward, and make them remain on the circle of a relative small diameter, avoid again in the process in lower going-into-well, there is friction or be stuck on oil pipe in the tube inner wall of card block teeth 21 and oil well, can not successfully be lowered in oil well.The inserted link of dropping feeder is extend in locking distinguish 34, locking distinguish 34 is strutted, the annular convex ring of locking distinguish 34 bottom is made to be fixed in the annular groove in the endoporus of piston 32, piston 32 is fixed, make piston 32 and lower interior pipe 38 can not relative movement, and making the space of the below of piston 32 form a confined space, the pressure in it keeps 1 atmospheric pressure.The pawl head of dropping feeder is made to catch the fishing socket 13 of this restriction choke, by wire rope, they are lowered in oil well together reposefully, lowering velocity is accelerated when precalculated position will be reached, just bring to a halt when making it reach disengage speed, the pawl head of dropping feeder and the fishing socket 13 of restriction choke are thrown off, the sleeve of dropping feeder and the card block teeth 21 of restriction choke are thrown off simultaneously, and the inserted link of dropping feeder is also extracted out in locking distinguish 34.After the sleeve of dropping feeder and the card block teeth 21 of restriction choke are thrown off, top pawl 18 is under the thrust of stage clip 17, move downward, promote 4 card block teeth 21 to move downward, simultaneously along the outside translational motion in inclined-plane of back-up block 22, after the card tooth of card block teeth 21 contacts with the inner surface of wellbore casing, each card tooth will be made tightly to be gripped on sleeve pipe, whole restriction choke grappling is positioned on pit shaft, and each card tooth uniform stressed.Because the pressure in pit shaft is very large, if now under restriction choke below pit shaft liquid level 2000 meters, its pressure approximately has 200 atmospheric pressure, just much bigger compared with the atmospheric pressure of 1 in the confined space below piston 32.After the inserted link of dropping feeder is extracted out in locking distinguish 34, under the effect of pressure differential large like this, lower interior pipe 38 promotes locking distinguish 34, will deviate from the annular groove in piston 32.Under borehole pressure effect, urceolus 37, lower interior pipe 38 are pushed to motion simultaneously, ring under lower rubber cylinder 31 upwards boosts by urceolus 37, piston 32 will move downward, and lower rubber cylinder be expanded and heave, when it expand into a certain degree, under lower rubber cylinder, ring 31 promotes lower inner ring by apical ring 33, lower inner ring makes upper packing element also expand by ring 29 under lower rubber cylinder pressed on ring 30, packing element to heave, then pushes away on continuing, and 2 packing elements can be made to be sealed up by pit shaft.While urceolus 37 moves upward, by install within it stir ring 36, drive opening lock ring 35 upwards to rise, when the outer hangnail of hangnail in opening lock ring and piston 32 meets, they will be interlocked, and to guarantee that packing element is in expansion and heaves state, keep the sealing of pit shaft.
Restriction choke main body be fixed on after in pit shaft, air valve device is lowered in well by recycling valve dropping feeder.Pressure cap 3 is caught with the pawl head of dropping feeder, be lowered in well with speed faster, under the guiding of guide head 12, air valve device enters in seating nipple 10, under the effect of impact force, movable lock dog 8 by seating nipple 10 upwardly, thrust spring 6 is compressed, movable lock dog moves, and movable lock dog 8 lower end can enter into the top inner groove of seating nipple 10 after inwardly shrinking, under the promotion of thrust spring 6, movable lock dog 8 moves down, and is locked by the lower end supporting interior pipe 5, makes air valve device stationary positioned.Dropping feeder is taken out in well, namely produces natural gas by valve.
Embodiment 7:
When needs take out valve from down-hole, throw in catcher is lowered in well, catches and drag for 1 and upwards mention, upper carry active force under, unlock shear pin 4 be pulled off, support in pipe 5 be pulled upwardly, movable lock dog 8 lower end is unlocked, air valve device can be taken out from down-hole.
Embodiment 8:
When needing to trip out restriction choke main body from down-hole, throw in catcher and steel wire are connected, fishing socket 13 is caught by wire rope G.I.H, then upwards firmly steel wire is lifted, shear pin 14 is cut off, wire rope is carried in continuation, fishing socket 13 moves, and lock dog 15 is deviate from, and tube connector 19 rises thereupon, after the lower end of tube connector 19 and snap ring 23 depart from, 4 lobes of snap ring 23 respectively to outer movement, then are carried on continuing, and tube connector 19 drives card tooth seat 20, top pawl 18 continues to rise, make it to remove being engaged of card block teeth 21 and well bore wall, releasing grappling.Continuation is carried, also can remove the sealing of 2 packing elements, whole restriction choke can be put forward from pit shaft.
Embodiment 9:
When needs go out valve 11 together with agent set from casing program design, in order to simplify salvaging program, also a fisher can be used, when making its G.I.H, pass through air valve device, directly make fisher be caught by fishing socket 13, upwards mention, make restriction choke main body out salvaged together with air valve device.
In sum, this split type underground throttle device of the present utility model, valve and body separately throw in and salvage, adjust when producing and only need salvage and change valve, throw in and the problem of salvaging difficulty after solving ever-larger diameters, gas well for 41/2 〞 oil pipe completion can be salvaged out valve and directly carry out injecting, bubble row, under enter minor diameter tubing and carry out water pumping gas production.Eliminate and salvage restriction choke body difficulty and salvage the improper risk causing down-hole accident.
More than exemplifying is only illustrate of the present utility model, does not form the restriction to protection domain of the present utility model, everyly all belongs within protection scope of the present invention with the same or analogous design of the utility model.
Claims (10)
1. a split type underground throttle device, comprise restriction choke main body and be docked at the restriction choke air valve device in restriction choke main body, it is characterized in that: described restriction choke main body comprises seating nipple (10), fishing socket (13), tube connector (19), card tooth seat (20), card block teeth (21), back-up block (22), interior pipe, packing element (27) and piston (32), fishing socket (13) bottom is spun by screw thread and card tooth seat (20) outside, upper end, it is inner that tube connector (19) is sleeved on card tooth seat (20), the bottom of seating nipple (10) is spun by screw thread and tube connector (19) outside, upper end, and seating nipple (10) is set in fishing socket (13) inside, card block teeth (21) and back-up block (22) are installed in the rectangular through holes of card tooth seat (20), back-up block (22) bottom is fixed in the rectangular through holes of card tooth seat (20), upper outside is inclined-plane, card block teeth (21) outside is provided with card tooth, the ramp structure matched with the inclined-plane of back-up block (22) in inner side, described tube connector (19) lower end connects described interior pipe, and inner pipe end is connected with piston (32), is socketed packing element (27) outside interior pipe.
2. split type underground throttle device as claimed in claim 1, it is characterized in that: described restriction choke air valve device comprises dragging in head (1), pressure cap (3), support manages (5), thrust stage clip (6), baffle ring (7), movable lock dog (8), valve seat (9), valve (11) and guide head (12), in described support, pipe (5) is cylindrical body, drags for head (1) lower end and is connected to pipe (5) upper end in support; Valve seat (9) is the inner cylindrical body with step, and its upper end has external screw thread, and lower end has internal thread, and middle and upper part has cannelure, and the bottom in lower external face and endoporus all has seal groove; In the upper end of pressure cap (3), valve seat (9) is enclosed within and supports on pipe (5), thrust spring (6), baffle ring (7) are sleeved on the top of valve seat (9) successively, movable lock dog (8) is contained in the cannelure of valve seat (9) also by baffle ring (7) clamping, valve (11) is arranged on valve seat (9) lower inside, guide head (12) is arranged on valve seat (9) interior lower end, and valve (11) clamps by guide head (12) upper end.
3. split type underground throttle device as claimed in claim 1, it is characterized in that: described card tooth seat (20) is the stepped cylindrical body of inside and outside equal tool, and card tooth seat (20) middle part has rectangular through holes, card tooth seat (20) outer wall top is set with pressure ring (16), stage clip (17) and top pawl (18) from top to bottom successively, and the lower end on described top pawl (18) presses card block teeth (21) upper end.
4. split type underground throttle device as claimed in claim 1, it is characterized in that: described interior pipe is divided into interior pipe (24) and lower interior pipe (38), the lower end of tube connector (19) is socketed in the outer wall upper end of interior pipe (24), the upper end of piston (32) is arranged on the outer wall lower end of upper interior pipe (24) by screw thread, the bottom of piston (32) is sleeved on the outer wall upper end of lower interior pipe (38); Be set with inner ring (28) outside described interior pipe (24), be socketed with packing element (27) outside inner ring (28), the lower end of packing element (27) is provided with urceolus (37).
5. split type underground throttle device as claimed in claim 4, it is characterized in that: described lower interior pipe (38) lower end is connected with interior connecting ring (40), interior connecting ring (40) is provided with the screen cloth (42) of tubular, screen cloth (42), built with spiral support spring (41) and catch (43), catch (43) is evenly equipped with the aperture that diameter is 2 millimeters; Filter sand guard (39) is evenly equipped with the longitudinal slot of 2 mm wides together with being linked by the lower end of screw thread and urceolus (37) and interior connecting ring (40) on filter sand guard (39).
6. split type underground throttle device as claimed in claim 1, it is characterized in that: described back-up block (22) outer upper is inclined-plane, bottom is provided with deep-slotted chip breaker and boss, and back-up block (22) is closely fixedly mounted by the step of this deep-slotted chip breaker and boss and card tooth seat (20) inside, lower end.
7. split type underground throttle device as claimed in claim 4, it is characterized in that: described inner ring (28) is divided into upper inner ring and lower inner ring, packing element (27) corresponding is with it divided into packing element and lower rubber cylinder, and its end is all provided with protection ring (26), the upper and lower side of upper packing element is respectively arranged with ring (29) under packing element pressed on ring (25) and upper packing element, the upper and lower side of lower rubber cylinder is respectively arranged with ring (31) under lower rubber cylinder pressed on ring (30) and lower rubber cylinder, upper packing element pressed on ring (25) is threaded connection card tooth seat (20) lower end, under upper packing element, ring (29) is threaded connection lower rubber cylinder pressed on ring (30), under lower rubber cylinder, ring (31) is threaded connection urceolus (37) upper end, under lower rubber cylinder, ring (31) inside is provided with apical ring (33).
8. the split type underground throttle device as described in claim 1 or 4, it is characterized in that: described piston (32) is for having the cylindrical body of outer ladder and external surface having thorn shape buttless thread, the outer ladder of piston (32) is provided with opening lock ring (35), and opening lock ring (35) is positioned at ring (31) lower end under lower rubber cylinder, the lower end of opening lock ring (35) is provided with stirs ring (36), and this is stirred ring (36) and is positioned at urceolus (37) inside;
Described opening lock ring (35) is the ring bodies with longitudinal opening, has outer chamfering at its upper end, has barb-shaped buttless thread on the surface within it;
Described piston (32) inside is provided with annular groove, is provided with locking distinguish (34) in this annular groove, and described locking distinguish (34) is the outside ring bodies with step, and its middle and lower part has longitudinal opening.
9. split type underground throttle device as claimed in claim 2, is characterized in that: the described sidewall dragging for head (1) is installed with pinning (2), will manage (5) and lock in pinning (2) will drag for head (1) and support;
The sidewall of described valve seat (9) is installed with and unlocks shear pin (4), unlock shear pin (4) and lock managing (5) in valve seat (9) and support;
The sidewall of described fishing socket (13) is installed with shear pin (14), and fishing socket (13) and card tooth seat (20) lock by shear pin (14);
The sidewall of described card tooth seat (20) has through hole, is provided with lock dog (15) in this through hole, described lock dog (15) end stretches into tube connector (19) and card tooth seat (20) and tube connector (19) is locked.
10. split type underground throttle device as claimed in claim 4, is characterized in that: described upper interior pipe (24) upper end arranged outside has annular groove, and this annular groove is built with snap ring (23), and described snap ring (23) is the annulus that lower end has flanging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420672529.3U CN204252973U (en) | 2014-11-12 | 2014-11-12 | Split type downhole choke ware |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420672529.3U CN204252973U (en) | 2014-11-12 | 2014-11-12 | Split type downhole choke ware |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204252973U true CN204252973U (en) | 2015-04-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420672529.3U Expired - Fee Related CN204252973U (en) | 2014-11-12 | 2014-11-12 | Split type downhole choke ware |
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| Country | Link |
|---|---|
| CN (1) | CN204252973U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105370252A (en) * | 2014-08-25 | 2016-03-02 | 中国石油天然气股份有限公司 | Condensate gas well exploitation method and equipment |
| CN105909198A (en) * | 2016-06-28 | 2016-08-31 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Safe pull and dissociating device for suction |
| CN107558961A (en) * | 2016-06-30 | 2018-01-09 | 中国石油天然气股份有限公司 | Underground throttle |
| CN108756772A (en) * | 2018-07-30 | 2018-11-06 | 西南石油大学 | A kind of flexible commutation liquid-gas type drill string two-way shock absorber |
| CN110513064A (en) * | 2019-10-12 | 2019-11-29 | 中国石油天然气股份有限公司西南油气田分公司工程技术研究院 | Movable anchoring device and anchorage method in a kind of oil pipe |
| CN111042778A (en) * | 2019-11-26 | 2020-04-21 | 宝鸡瑞林石油机电设备有限责任公司 | Multiple-time seat-seal preset type throttler |
| CN111502612A (en) * | 2020-04-16 | 2020-08-07 | 上海交通大学 | Water drainage gas production device based on supersonic velocity jet atomization |
| CN111927400A (en) * | 2020-09-06 | 2020-11-13 | 中国石油天然气集团有限公司 | Downhole throttling vortex drainage and gas production integrated tool |
| CN116104453A (en) * | 2021-11-11 | 2023-05-12 | 中国石油天然气股份有限公司 | Throwing-free fishing-free underground throttling device and construction method |
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2014
- 2014-11-12 CN CN201420672529.3U patent/CN204252973U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105370252A (en) * | 2014-08-25 | 2016-03-02 | 中国石油天然气股份有限公司 | Condensate gas well exploitation method and equipment |
| CN105370252B (en) * | 2014-08-25 | 2017-11-10 | 中国石油天然气股份有限公司 | Condensate gas well exploitation method and equipment |
| CN105909198A (en) * | 2016-06-28 | 2016-08-31 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Safe pull and dissociating device for suction |
| CN107558961A (en) * | 2016-06-30 | 2018-01-09 | 中国石油天然气股份有限公司 | Underground throttle |
| CN107558961B (en) * | 2016-06-30 | 2019-09-06 | 中国石油天然气股份有限公司 | Underground throttle |
| CN108756772A (en) * | 2018-07-30 | 2018-11-06 | 西南石油大学 | A kind of flexible commutation liquid-gas type drill string two-way shock absorber |
| CN110513064A (en) * | 2019-10-12 | 2019-11-29 | 中国石油天然气股份有限公司西南油气田分公司工程技术研究院 | Movable anchoring device and anchorage method in a kind of oil pipe |
| CN111042778A (en) * | 2019-11-26 | 2020-04-21 | 宝鸡瑞林石油机电设备有限责任公司 | Multiple-time seat-seal preset type throttler |
| CN111502612A (en) * | 2020-04-16 | 2020-08-07 | 上海交通大学 | Water drainage gas production device based on supersonic velocity jet atomization |
| CN111927400A (en) * | 2020-09-06 | 2020-11-13 | 中国石油天然气集团有限公司 | Downhole throttling vortex drainage and gas production integrated tool |
| CN111927400B (en) * | 2020-09-06 | 2022-11-29 | 中国石油天然气集团有限公司 | Downhole throttling vortex drainage and gas production integrated tool |
| CN116104453A (en) * | 2021-11-11 | 2023-05-12 | 中国石油天然气股份有限公司 | Throwing-free fishing-free underground throttling device and construction method |
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