CN209838364U - Concentric double-barrelled hydraulic control formula annular space safety packer that uses - Google Patents
Concentric double-barrelled hydraulic control formula annular space safety packer that uses Download PDFInfo
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- CN209838364U CN209838364U CN201920120059.2U CN201920120059U CN209838364U CN 209838364 U CN209838364 U CN 209838364U CN 201920120059 U CN201920120059 U CN 201920120059U CN 209838364 U CN209838364 U CN 209838364U
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Abstract
The utility model discloses a concentric double-barrelled liquid accuse formula annular space safety packer that uses, including center tube, packing element mechanism, anchoring mechanism, still include two-way actuating mechanism, setting pipe suit is outside at the center tube, and it suppresses the annular space passageway to sit to constitute the liquid accuse between inside pipe wall and the center tube outer wall, packing element mechanism, anchoring mechanism, two-way actuating mechanism all suit are at setting pipe outer wall, two-way actuating mechanism upper end is through locking mechanism connection packing element mechanism lower extreme, and anchoring mechanism upper end is connected to two-way actuating mechanism lower extreme, packer deblocking mechanism is connected to the anchoring mechanism lower extreme, setting pipe sets up radial pressure hole, and this radial pressure hole that passes makes two-way actuating mechanism and liquid accuse suppress the annular space passageway and communicate each other. The utility model discloses the inner tube produces the risk of damage to the liquid accuse pipeline when avoiding traditional pipeline to pass through to guarantee that the tubular column is effective, stable to seal and separate the oil jacket annular space, simplify the tubular column structure.
Description
Technical Field
The utility model belongs to the technical field of the oil industry is sealed in the pit and specifically relates to a concentric double-barrelled liquid accuse formula annular space safety packer that uses.
Background
The existing hydraulic control type concentric double-pipe separate injection process is popularized and applied to the field of Chengqing island on the Shengli sea, and a well control safety tool between an outer pipe and a sleeve pipe matched with the water injection pipe column is a hydraulic control pipeline safety packer which mainly plays a role in annular safety between the outer pipe and the sleeve pipe; the safety packer for the hydraulic control pipeline adopts a mode that the inner pipe annulus and the outer pipe annulus are pressed, set and locked from the ground by a three-cylinder pump, one hydraulic control pipeline penetrates through the safety packer and is tightly attached to the inner side of the central pipe, the upper joint part and the lower joint part of the safety packer are connected with the hydraulic control packer at the lower part through 1/4INNPT buckles, and the working state of the underground hydraulic control packer can be controlled by pressing from the ground.
Because the hydraulic control pipeline is difficult to cling to the inner wall of the central pipe during assembly and often protrudes out of the inner wall of the central pipe, the inner pipe is scratched when penetrating through the inner cavity of the hydraulic control pipeline safety packer and the hydraulic control pipeline is scraped to cause the failure risk of the underground hydraulic control packer in the process of descending the inner pipe after the outer pipe is descended.
Therefore, a hydraulic control type annular safety packer which can be applied to the well control safety requirements of the hydraulic control type concentric double-pipe separate injection well in the offshore oilfield needs to be designed, the annular pressure setting of the inner pipe and the annular pressure setting of the outer pipe are not needed, the ground hydraulic control pipeline is directly set and locked by pressure setting, the pressure can be compensated in real time according to the well conditions, the long-term safety, reliability and effectiveness are ensured, and the structure of the tubular column is further simplified.
Application No.: 201820099364.3 provides a bridge concentric dual packer and fracturing system wherein the bridge concentric dual packer is used to seal off the annulus after being lowered into the wellbore with the tubing; the concentric double-barrelled packer of bridge type includes interior sleeve pipe, the outer tube, seal and separate the subassembly and pass the pressure pipeline, the outer tube cover is established outside the endotheca pipe, and with interior sleeve pipe between form double-barrelled annular space, seal and separate the subassembly cover and establish outside the overcoat pipe, it has deformable packing piece to seal and separate the subassembly, form the shutoff chamber between packing piece and the outer tube, pass the pressure pipeline setting in double-barrelled annular space, and be used for communicateing interior sheathed tube lumen and shutoff chamber, when being poured into fracturing fluid in interior sheathed tube lumen, fracturing fluid can get into the shutoff intracavity through passing the pressure pipeline and seal the piece deformation and shutoff annular space with the. The utility model provides a concentric double-barrelled packer of bridge type among the prior art can not provide two-way liquid stream circulation channel when realizing packing the effect, lead to the concentric double-barrelled packer of bridge type's the poor problem of practicality.
Compared with the present application, the above-mentioned disclosed technologies are not the same in terms of overall technical solutions, technical problems to be solved, technical effects, and the like, and do not have any technical teaching.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a concentric double-barrelled liquid accuse formula annular space safety packer utilizes ground liquid accuse pipeline to realize effective setting of double-barrelled water injection tubular column annular space safety packer, and the inner tube produces the risk of damage to the liquid accuse pipeline when avoiding traditional pipeline to pass through to guarantee that the tubular column is effective, stable to seal oil jacket annular space, simplify the tubular column structure.
In order to achieve the above object, the utility model discloses a following technical scheme, a concentric double-pipe is with liquid accuse formula annular space safety packer, including center tube, packing element mechanism, anchoring mechanism, still include two-way actuating mechanism, sit and seal the pipe box-packing outside the center tube, sit and seal and constitute the liquid accuse between inside pipe wall and the center tube outer wall and beat annular space passageway, packing element mechanism, anchoring mechanism, two-way actuating mechanism all suit are at the setting outside of tubes wall, two-way actuating mechanism upper end is through locking mechanism connection packing element mechanism lower extreme, and anchoring mechanism upper end is connected to two-way actuating mechanism lower extreme, packer deblocking mechanism is connected to the anchoring mechanism lower extreme, the setting pipe is seted up radial pressure transmission hole, and this radial pressure transmission hole makes two-way actuating mechanism and liquid accuse beat annular space passageway and communicate each other.
The upper end of the central pipe and the upper end of the rubber barrel mechanism are both connected with an upper connector, the upper connector is provided with an upper liquid control channel which is axially communicated, the upper liquid control channel is communicated with a liquid control pressurizing annular channel, the upper connector is a 4in female thread buckle, the upper end of the central pipe and the upper end of the rubber barrel mechanism are both connected with the upper connector in a thread buckle mode, and the inner wall of an upper port of the upper liquid control channel is provided with an NPT thread buckle.
The upper end face of the setting pipe is uniformly provided with radial through grooves, and the upper hydraulic control channel is smoothly communicated with the hydraulic control pressurizing annular channel through the radial through grooves.
The packing element mechanism includes packing element, goes up the holding ring, the packing element sets up two at least, sets up the spacer ring between two liang of packing elements, and the packing element up end of top withstands upper locating ring lower extreme face, goes up the holding ring thread formula and connects the top connection, go up and set up the sealing washer between holding ring outer wall and the top connection inner wall, go up and set up the sealing washer between holding ring inner wall and the setting pipe outer wall.
The locking mechanism comprises a lock sleeve, a lock ring and a press ring, the lower end of the press ring is connected with a cylinder body of the bidirectional driving mechanism in a threaded manner, the press ring is sleeved outside the lock sleeve and fixed through shear pins, the inner wall of the lock ring is connected with the outer wall of the lock sleeve in a button manner through a dog, and the lower end of the press ring presses the upper end of the lock ring.
The bidirectional driving mechanism comprises a cylinder body, a setting piston and a lower piston, the setting piston and the lower piston are arranged inside the cylinder body, the upper end face of the setting piston corresponds to the lower end face of the lock sleeve, the lower end of the lower piston is connected with the anchoring mechanism, the space between the setting piston and the lower piston is communicated with a radial pressure transmission hole formed in the setting pipe, an inner clamping table is arranged on the inner wall of the cylinder body, the upper end face of the inner clamping table props against the lower end of the locking ring, namely, the locking ring is axially limited by the pressing ring and the inner clamping table, and the lower piston is fixedly connected with the cylinder body through a shear pin.
The outer wall of the setting pipe is provided with a lock block groove, a lock block is arranged in the lock block groove, and the lock ring simultaneously axially limits the setting piston and the lower piston.
The setting piston is characterized in that a sealing ring is arranged between the inner wall of the setting piston and the outer wall of the setting pipe, a sealing ring is arranged between the outer wall of the setting piston and the inner wall of the cylinder body, a sealing ring is arranged between the inner wall of the lower piston and the outer wall of the setting pipe, and a sealing ring is arranged between the outer wall of the lower piston and the inner wall of the cylinder body.
The anchoring mechanism comprises an upper cone, a slip sleeve, slips, a plate spring and a lower cone, wherein the slips are arranged in a slip groove which is formed in the slip sleeve and is radially communicated, the slips are fixed on the plate spring, two ends of the plate spring are fixed at two ends of the slip groove, the lower end of the upper cone extends into the slip sleeve and corresponds to the upper end of the slips, the upper end of the upper cone is connected with a lower piston, the upper end of the lower cone extends into the slip sleeve and corresponds to the lower end of the slips, the upper end face of the upper cone is supported on an inner ring table which is formed on the inner wall of the lower piston, the upper cone and the lower piston are connected and fixed through shear pins, the upper cone and the slip sleeve are fixed through the shear pins, and meanwhile, the inner clamp which is formed on the inner wall of the upper end of the slip.
The bottom end of the slip sleeve is in threaded connection with a lower cone retaining ring, the upper end face of the lower cone retaining ring is axially limited relative to an outer clamping table arranged on the outer wall of the lower cone, and the lower cone retaining ring is fixedly connected with the slip sleeve through a shear pin.
Packer deblocking mechanism includes sheath, lower variable buckle joint, deblocking ring, the cone is connected down through the shear pin to the sheath upper end, and the deblocking ring is connected through the shear pin to the sheath lower extreme, deblocking ring passes through variable buckle joint under the shear pin connection, the lower variable buckle joint upper end is connected the setting pipe through the shear pin down, constitute the annular space down between variable buckle joint and the center tube, this annular space is as the pilot operated lower part extension passageway that suppresses the annular space passageway.
The lower extreme screw thread formula of center tube is connected the lower clutch, the lower fluid control passageway that the axial is link up is seted up to the lower clutch, and lower fluid control passageway passes through the lower part extends the passageway and presses annular space passageway intercommunication with the liquid accuse, become in the fastener lower extreme stretches into the lower clutch down, set up the sealing washer between fastener outer wall and the lower clutch inner wall down, become evenly to set up radial fluting that link up of fastener lower terminal surface down, radially link up the fluting make down the fluid control passageway with the lower part extends the passageway intercommunication smoothly.
The end face pushes against a first inner clamping table arranged on the inner wall of the unsealing ring under the sheath, the end face pushes against an inner clamping table arranged on the inner wall of the lower variable buckle joint under the setting pipe, the lower variable buckle joint and the setting pipe are sealed, a second inner clamping table is arranged on the inner wall of the lower end of the unsealing ring, the second inner clamping table is axially limited to an outer clamping table arranged on the outer wall of the lower variable buckle joint, and an NPT thread buckle is arranged on the inner wall of a lower port of the lower hydraulic control channel.
Nipple joint under the nipple joint lower extreme screw thread formula is connected, nipple joint is 4in pin thread button down.
Compared with the prior art, the utility model following beneficial effect has:
the utility model solves the well control safety problem between the outer pipe and the sleeve of the hydraulic control type concentric double-pipe separate injection process pipe column, and further simplifies the pipe column structure; the setting state of the packer is controlled by adopting an independent single hydraulic control pipeline, and meanwhile, the structural design of single locking ring and double locking is adopted, so that the rubber tube and the anchor tooth work simultaneously by one-time pressing, the pressure can be supplemented in real time according to the well condition, and the well control safety and reliability of the offshore oil field hydraulic control type concentric double-tube separate injection well are met; can be widely applied to the layered water injection well of the beach and shallow sea oil and gas fields.
The independent hydraulic control pipeline pressurizing channel is arranged to control setting of the packer, the independent locking mechanism is used for pressurizing the permanent setting once, the rubber cylinder is tightly attached to the wall of the casing and does not retract after pressure relief, and the hydraulic control pipeline pressure relief rubber cylinder does not retract when the inner pipe and the outer pipe are washed mutually.
A hydraulic channel connected with the bottom hydraulic control packer in series is designed, and the ground hydraulic control pipeline is pressurized and simultaneously set and anchored with the bottom hydraulic control packer.
The anchoring structure is designed, the anchor teeth are also supported on the inner wall of the sleeve while the ground hydraulic control pipeline presses the setting rubber cylinder, the rubber cylinder is well protected during working condition conversion, and the practical service life is further prolonged.
The hydraulic control type annular safety packer can be subjected to real-time pressure compensation according to well conditions, and the well control is ensured to be safe, lasting and effective.
Drawings
Fig. 1 is the utility model discloses a structure schematic diagram of concentric double-barrelled liquid accuse formula annular space safety packer that uses.
The symbols in the drawings illustrate that: the sealing device comprises an upper joint 1, a central pipe 2, a setting pipe 3, an upper positioning ring 4, a rubber cylinder 5, a spacer ring 6, a lock sleeve 7, a shear pin 8, a pressing ring 9, a lock ring 10, a cylinder body 11, a setting piston 12, a lock block 13, a lower piston 14, an upper cone 15, a shear pin 16, a slip sleeve 17, a slip 18, a plate spring 19, a lower cone 20, a lower cone retaining ring 21, a sheath 22, a lower variable buckle joint 23, an unsealing ring 24, a shear pin 25, a lower joint 26 and a lower short section 27.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1:
referring to fig. 1, the present invention provides a technical solution: the utility model provides a concentric double-barrelled liquid accuse formula annular space safety packer that uses, includes center tube 2, packing element mechanism, anchoring mechanism, still includes two-way actuating mechanism, sets up a tub 3, set up the casing suit outside the center tube, set up between inside pipe wall and the center tube outer wall and constitute the liquid accuse and beat annular space passageway, packing element mechanism, anchoring mechanism, two-way actuating mechanism all suit are at the setting outside of tubes wall, packing element mechanism lower extreme is connected to two-way actuating mechanism upper end, and anchoring mechanism upper end is connected to two-way actuating mechanism lower extreme, the setting pipe is seted up and is radially passed the pressure hole, and this radially passes the pressure hole and makes two-way actuating mechanism and liquid accuse beat annular space passageway and communicate each other.
The upper end of the central pipe and the upper end of the rubber cylinder mechanism are both connected with an upper joint 1, the upper joint is provided with an upper liquid control channel which is axially communicated, and the upper liquid control channel is communicated with the liquid control pressurizing annular channel.
The upper joint is a 4-in female thread buckle, and the upper end of the central pipe and the upper end of the rubber cylinder mechanism are connected with the upper joint in a thread type.
And an NPT thread buckle is arranged on the inner wall of the upper port of the upper hydraulic control channel.
The upper end face of the setting pipe is uniformly provided with radial through grooves, and the upper hydraulic control channel is smoothly communicated with the hydraulic control pressurizing annular channel through the radial through grooves.
The packing element mechanism includes packing element 5, upper locating ring 4, the packing element sets up two at least, and the packing element sets up spacer ring 6 between two liang, and the packing element up end of the top withstands upper locating ring terminal surface down, goes up locating ring screw thread formula and connects the top.
And a sealing ring is arranged between the outer wall of the upper positioning ring and the inner wall of the upper joint, and a sealing ring is arranged between the inner wall of the upper positioning ring and the outer wall of the setting pipe.
And a locking mechanism is arranged between the bidirectional driving mechanism and the rubber cylinder mechanism.
The locking mechanism comprises a lock sleeve 7, a lock ring 10 and a press ring 9, the lower end of the press ring is connected with a cylinder body of the bidirectional driving mechanism in a threaded manner, the press ring is sleeved outside the lock sleeve and fixed through shear pins 8, the inner wall of the lock ring is connected with the outer wall of the lock sleeve in a crenellated manner, and the lower end of the press ring presses the upper end of the lock ring. The setting piston upwards pushes up the lock sleeve, the shear pin 8 breaks, the lock sleeve continues to go upward to set the packing element, simultaneously, the outer ridge buckle of the outer wall of the lock sleeve goes upward along the inner ridge buckle of the inner wall of the lock ring, due to the principle of the ridge buckle, the lock sleeve can only go upward, the lock sleeve is in a locked state downward, the lock ring is limited by the compression ring and the clamping table of the inner wall of the cylinder body, and as long as the cylinder body is not moved, the extrusion setting of the lock sleeve on the packing element cannot be loosened.
While the setting piston 12 moves upwards to compress the rubber cylinder, the lower piston 14 drives the cylinder body 11 to push the upper cone 15 to move downwards to push the extrusion plate spring to push the slip 18 to anchor the sleeve, and at the moment, the rubber cylinder is kept in a compressed state by the lock sleeve; and lifting the pipe column, driving the central pipe 2 to move upwards, maintaining the central pipe and the slip sheath deblocking environment immovable due to the effect of the slip, shearing the deblocking shear pin when the central pipe and the slip are subjected to relative displacement, pushing the upper cone, the lower piston and the cylinder body to move upwards by the self elasticity of the plate spring, resetting and releasing the anchoring of the slip, moving the cylinder body upwards, driving the lock sleeve to move downwards, and resetting the rubber sleeve under the action of the self elasticity to release sealing.
The bidirectional driving mechanism comprises a cylinder body 11, a setting piston 12 and a lower piston 14, the setting piston and the lower piston are arranged inside the cylinder body, the upper end face of the setting piston corresponds to the lower end face of the lock sleeve, the lower end of the lower piston is connected with the anchoring mechanism, and the space between the setting piston and the lower piston is communicated with a radial pressure transmission hole formed in the setting pipe 3.
The inner wall of the cylinder body is provided with an inner clamping table, the upper end face of the inner clamping table props against the lower end of the locking ring, and the locking ring and the inner clamping table are axially limited.
The lower piston is fixedly connected with the cylinder body through shear pins.
The outer wall of the setting pipe is provided with a lock block groove, a lock block 13 is installed in the lock block groove, and the lock ring simultaneously limits the setting piston and the lower piston in the axial direction.
And a sealing ring is arranged between the inner wall of the setting piston and the outer wall of the setting pipe, and a sealing ring is arranged between the outer wall of the setting piston and the inner wall of the cylinder body.
And a sealing ring is arranged between the inner wall of the lower piston and the outer wall of the setting pipe, and a sealing ring is arranged between the outer wall of the lower piston and the inner wall of the cylinder body.
The anchoring mechanism comprises an upper cone 15, a slip sleeve 17, slips 18, a plate spring 19 and a lower cone 20, the slips are arranged in a slip groove which is formed in the slip sleeve and is radially communicated, the slips are fixed on the plate spring, two ends of the plate spring are fixed at two ends of the slip groove, the lower end of the upper cone extends into the slip sleeve to correspond to the upper end of the slips, the upper end of the upper cone is connected with a lower piston, and the upper end of the lower cone extends into the slip sleeve to correspond to the lower end of the slips.
The upper end face of the upper cone body is supported on an inner ring table arranged on the inner wall of the lower piston, and the upper cone body and the lower piston are connected and fixed through shear pins.
The upper cone and the slip sleeve are fixed through the shear pins 16, and an inner clamping table arranged on the inner wall of the upper end of the slip sleeve axially limits an outer clamping table arranged on the outer wall of the upper cone.
The bottom end of the slip sleeve is in threaded connection with a lower cone retaining ring 21, the upper end face of the lower cone retaining ring is axially limited relative to an outer clamping table arranged on the outer wall of the lower cone, and the lower cone retaining ring is fixedly connected with the slip sleeve through shear pins.
And the lower end of the lower cone is connected with a packer deblocking mechanism.
Packer deblocking mechanism includes sheath 22, down becomes joint 23, deblocking ring 24, the cone is connected down through the shear pin in the sheath upper end, and the sheath lower extreme passes through the shear pin and connects deblocking ring, deblocking ring passes through shear pin 25 and connects down the joint, become the joint upper end down and connect the setting pipe through the shear pin, constitute the annular space down between joint and the center tube, this annular space is as the lower part extension passageway that the annular space passageway was suppressed to the liquid accuse.
The lower end of the central pipe is connected with a lower joint 26 in a threaded mode, the lower joint is provided with a lower liquid control channel which is axially communicated, and the lower liquid control channel is communicated with the liquid control pressurizing annular channel through the lower extending channel.
The lower end of the lower buckle changing joint extends into the lower joint, and a sealing ring is arranged between the outer wall of the lower buckle changing joint and the inner wall of the lower joint.
And the lower end face of the lower buckle adapter is uniformly provided with radial through grooves, and the radial through grooves enable the lower hydraulic control channel to be smoothly communicated with the lower extension channel.
The lower end face of the sheath abuts against a first inner clamping table arranged on the inner wall of the unsealing ring.
The lower end face of the setting pipe is propped against an inner clamping table arranged on the inner wall of the lower buckle adapter, and the lower buckle adapter and the setting pipe are sealed.
And a second inner clamping table is arranged on the inner wall of the lower end of the unsealing ring, and the second inner clamping table axially limits an outer clamping table arranged on the outer wall of the lower buckle adapter.
And an NPT thread buckle is arranged on the inner wall of the lower port of the lower hydraulic control channel.
And the lower end of the lower joint is in threaded connection with a lower short joint 27.
The lower short section is a 4-in male thread buckle.
In another aspect, the hydraulic control type annular safety packer for the concentric double pipes comprises an inner cylinder structure and an outer cylinder structure, wherein the inner cylinder structure comprises an upper joint 1, a central pipe 2, a lower joint 26, a lower short section 27 and the like which are sequentially connected from top to bottom, the outer cylinder structure comprises a setting pipe 3, a lower buckle joint 23 and the like which are sequentially connected from top to bottom, the outer cylinder structure further comprises an upper positioning ring 4, a rubber cylinder 5, a spacer ring 6, a locking sleeve 7, a pressing ring 9, a locking ring 10, a cylinder body 11, a setting piston 12, a locking block 13, a lower piston 14 and the like which are arranged outside the setting pipe, the setting pipe 3, the cylinder body 11, the setting piston 12 and the lower piston 14 form a closed space to realize the setting function of the packer, and under the action of high-pressure hydraulic oil, the setting piston 12 pushes the locking sleeve 7 to shear a setting shear pin 8, and the locking sleeve further extrudes the rubber cylinder 5 to. The outer cylinder structure further comprises an upper cone 15, a slip sleeve 17, a slip 18, a lower cone 20, a sheath 22, a deblocking ring 24 and the like which are arranged outside the setting pipe 3, wherein the upper cone 15 is connected with the lower end of the lower piston through a screw thread and fixed by a shear pin, the lower end of the upper cone 15 is fixed on an inner step surface of the slip sleeve 17 and fixed by a shear pin 16, a lower cone blocking ring 21 is connected with the lower end of the slip sleeve 17 through a thread and fixed by a shear pin, the lower cone 20 is fixed on the upper end surface of the lower cone blocking ring 21, the slip 18 and a plate spring are arranged in a groove on the slip sleeve 17, the upper end of the slip 18 is limited by the upper cone 15, the lower end of the slip sleeve is limited by the lower cone 20, the sheath 22 is in threaded connection with the lower end of the lower cone 20 and fixed on a step surface at the lower end of the lower cone 20, the lower end of the sheath 22 is in threaded connection with the deblocking ring 24 and fixed on an upper step surface of the deblocking ring 24, the deblocking ring 24 is fixed, and fixed by shear pin 25, go up cone 15, slips 18, lower cone 20 etc. and constitute the anchoring structure of packer, on high-pressure hydraulic oil acts on piston 14 down, lower piston 14 promotes cone 15 extrusion slips 18 and leaf spring 19 warp down, slips 18 opens and fixes at the sleeve pipe inner wall, realizes the anchoring of packer, sheath 22, lower trip joint 23 and deblocking ring 24 etc. constitute packer deblocking structure, when lifting packer top tubular column, the packing element 5 and the slips 19 of packer keep fixed relative to the sleeve pipe, this packer's top joint 1, center tube 2, lower joint 26, setting pipe 3 and lower trip joint 23 etc. upward movement, lifting action force cuts deblocking shear pin, packing element and slips are retrieved, realize packer deblocking function.
And the inner wall and the outer wall of the upper positioning ring 4 are respectively provided with a sealing ring for sealing the contact surface of the upper joint and the upper positioning ring and the contact surface of the seat sealing pipe and the upper positioning ring.
The lower end of the seat tube 3 is provided with a sealing ring for sealing the contact surface of the seat tube 3 and the lower buckle joint 23.
And sealing rings are arranged inside and outside the setting piston 12 and are used for sealing the contact surfaces of the setting pipe 3 and the setting piston 12 and the contact surfaces of the setting piston 12 and the cylinder body 11 respectively.
And sealing rings are arranged inside and outside the lower piston 14 and are used for sealing the contact surfaces of the seat pipe 3 and the lower piston 14 and the contact surfaces of the lower piston 14 and the cylinder body 11 respectively.
The lower joint 26 is provided with an inner sealing ring for sealing the contact surface of the lower joint 26 and the lower buckle joint 23.
The upper joint 1, lower clutch 26 all have and overflow the through-hole, it is provided with the discharge orifice to sit the pipe 3, the up end of sitting the pipe 3 is provided with the fluting of equipartition, become the fluting that the terminal surface was provided with the equipartition under 23 of lock joint down, hydraulic oil through upper joint 1, sit and seal pipe 3, become lock joint 23 and lower clutch 26 flow down the hydraulically controlled packer.
After the annular packer is put into the tubular column, the well ground hydraulic pump is pressed, high-pressure hydraulic oil enters the setting pipe 3, and enters a closed space formed by the setting pipe 3 and the setting piston 12 through an overflowing hole of the setting pipe 3, the high-pressure hydraulic oil pushes the setting piston 12 to move upwards to push the lock sleeve 7 to cut off the setting shear pin 8 and extrude the rubber cylinder 5 to complete packer setting, meanwhile, the high-pressure hydraulic oil acts on the lower piston 14, the lower piston 14 drives the upper cone 15 to extrude a slip 18 and a plate spring 19, the slip 18 is opened and anchored on the inner wall of the sleeve, and packer anchoring is realized.
When the upper square pipe column is lifted, the packer rubber cylinder 5, the slip 18 and the like are fixed relative to the casing, the upper joint 1, the setting pipe 3 and the lower fastening joint 23 move upwards relatively, the lifting acting force shears the deblocking shear pin 25, and the packer slip and the rubber cylinder are retracted simultaneously to realize deblocking of the packer.
The hydraulic control pipeline of the annular packer and the hydraulic control packer below the tubular column share one packer, the structure and the construction process of the tubular column are simplified, the overflowing channel is internally arranged, the lower inner tube is prevented from scraping the hydraulic control pipeline, the process is more reliable than the traditional traversing process, and the number of the hydraulic control pipelines is reduced to 1; the hydraulic control pipeline pressurizing channel controls setting of the packer, an independent locking mechanism is used for pressurizing a permanent setting once, a rubber sleeve is tightly attached to the wall of a casing and does not retract after pressure relief, the hydraulic control pipeline pressure relief rubber sleeve does not retract when the inner pipe and the outer pipe are washed mutually, the inner pipe and the outer pipe refer to an inner pipe and an outer pipe of a double-pipe water injection pipe column, the outer pipe is a pipe column connected with the upper part and the lower part of the annular packer, and the inner pipe is a set of pipe column which is arranged inside the packer again; the annular packer and the lower hydraulic control packer are simultaneously set and anchored; when the hydraulic pipeline is decompressed, the anchor teeth continue to be effective, the rubber cylinder is well protected when the working conditions of water injection and well flushing are changed, and the practical service life is further prolonged; and the annular packer can be pressurized according to well conditions, so that the well control is safe, lasting and effective.
Example 2:
referring to fig. 1, the present invention provides a technical solution: the utility model provides a concentric double-barrelled liquid accuse formula annular space safety packer that uses, includes center tube 2, packing element mechanism, anchoring mechanism, still includes two-way actuating mechanism, sets up a tub 3, set up the casing suit outside the center tube, set up between inside pipe wall and the center tube outer wall and constitute the liquid accuse and beat annular space passageway, packing element mechanism, anchoring mechanism, two-way actuating mechanism all suit are at the setting outside of tubes wall, packing element mechanism lower extreme is connected to two-way actuating mechanism upper end, and anchoring mechanism upper end is connected to two-way actuating mechanism lower extreme, the setting pipe is seted up and is radially passed the pressure hole, and this radially passes the pressure hole and makes two-way actuating mechanism and liquid accuse beat annular space passageway and communicate each other.
The upper end of the central pipe and the upper end of the rubber cylinder mechanism are both connected with an upper joint 1, the upper joint is provided with an upper liquid control channel which is axially communicated, and the upper liquid control channel is communicated with the liquid control pressurizing annular channel.
The upper end face of the setting pipe is uniformly provided with radial through grooves, and the upper hydraulic control channel is smoothly communicated with the hydraulic control pressurizing annular channel through the radial through grooves.
The packing element mechanism includes packing element 5, upper locating ring 4, the packing element sets up two at least, and the packing element sets up spacer ring 6 between two liang, and the packing element up end of the top withstands upper locating ring terminal surface down, goes up locating ring screw thread formula and connects the top.
And a sealing ring is arranged between the outer wall of the upper positioning ring and the inner wall of the upper joint, and a sealing ring is arranged between the inner wall of the upper positioning ring and the outer wall of the setting pipe.
And a locking mechanism is arranged between the bidirectional driving mechanism and the rubber cylinder mechanism.
The locking mechanism comprises a lock sleeve 7, a lock ring 10 and a press ring 9, the lower end of the press ring is connected with a cylinder body of the bidirectional driving mechanism in a threaded manner, the press ring is sleeved outside the lock sleeve and fixed through shear pins 8, the inner wall of the lock ring is connected with the outer wall of the lock sleeve in a crenellated manner, and the lower end of the press ring presses the upper end of the lock ring. The setting piston upwards pushes up the lock sleeve, the shear pin 8 breaks, the lock sleeve continues to go upward to set the packing element, simultaneously, the outer ridge buckle of the outer wall of the lock sleeve goes upward along the inner ridge buckle of the inner wall of the lock ring, due to the principle of the ridge buckle, the lock sleeve can only go upward, the lock sleeve is in a locked state downward, the lock ring is limited by the compression ring and the clamping table of the inner wall of the cylinder body, and as long as the cylinder body is not moved, the extrusion setting of the lock sleeve on the packing element cannot be loosened.
The bidirectional driving mechanism comprises a cylinder body 11, a setting piston 12 and a lower piston 14, the setting piston and the lower piston are arranged inside the cylinder body, the upper end face of the setting piston corresponds to the lower end face of the lock sleeve, the lower end of the lower piston is connected with the anchoring mechanism, and the space between the setting piston and the lower piston is communicated with a radial pressure transmission hole formed in the setting pipe 3.
The inner wall of the cylinder body is provided with an inner clamping table, the upper end face of the inner clamping table props against the lower end of the locking ring, and the locking ring and the inner clamping table are axially limited.
The lower piston is fixedly connected with the cylinder body through shear pins.
The outer wall of the setting pipe is provided with a lock block groove, a lock block 13 is installed in the lock block groove, and the lock ring simultaneously limits the setting piston and the lower piston in the axial direction.
And a sealing ring is arranged between the inner wall of the setting piston and the outer wall of the setting pipe, and a sealing ring is arranged between the outer wall of the setting piston and the inner wall of the cylinder body.
And a sealing ring is arranged between the inner wall of the lower piston and the outer wall of the setting pipe, and a sealing ring is arranged between the outer wall of the lower piston and the inner wall of the cylinder body.
The anchoring mechanism comprises an upper cone 15, a slip sleeve 17, slips 18, a plate spring 19 and a lower cone 20, the slips are arranged in a slip groove which is formed in the slip sleeve and is radially communicated, the slips are fixed on the plate spring, two ends of the plate spring are fixed at two ends of the slip groove, the lower end of the upper cone extends into the slip sleeve to correspond to the upper end of the slips, the upper end of the upper cone is connected with a lower piston, and the upper end of the lower cone extends into the slip sleeve to correspond to the lower end of the slips.
The upper end face of the upper cone body is supported on an inner ring table arranged on the inner wall of the lower piston, and the upper cone body and the lower piston are connected and fixed through shear pins.
The upper cone and the slip sleeve are fixed through the shear pins 16, and an inner clamping table arranged on the inner wall of the upper end of the slip sleeve axially limits an outer clamping table arranged on the outer wall of the upper cone.
The bottom end of the slip sleeve is in threaded connection with a lower cone retaining ring 21, the upper end face of the lower cone retaining ring is axially limited relative to an outer clamping table arranged on the outer wall of the lower cone, and the lower cone retaining ring is fixedly connected with the slip sleeve through shear pins.
And the lower end of the lower cone is connected with a packer deblocking mechanism.
Packer deblocking mechanism includes sheath 22, down becomes joint 23, deblocking ring 24, the cone is connected down through the shear pin in the sheath upper end, and the sheath lower extreme passes through the shear pin and connects deblocking ring, deblocking ring passes through shear pin 25 and connects down the joint, become the joint upper end down and connect the setting pipe through the shear pin, constitute the annular space down between joint and the center tube, this annular space is as the lower part extension passageway that the annular space passageway was suppressed to the liquid accuse.
The lower end of the central pipe is connected with a lower joint 26 in a threaded mode, the lower joint is provided with a lower liquid control channel which is axially communicated, and the lower liquid control channel is communicated with the liquid control pressurizing annular channel through the lower extending channel.
The lower end of the lower buckle changing joint extends into the lower joint, and a sealing ring is arranged between the outer wall of the lower buckle changing joint and the inner wall of the lower joint.
And the lower end face of the lower buckle adapter is uniformly provided with radial through grooves, and the radial through grooves enable the lower hydraulic control channel to be smoothly communicated with the lower extension channel.
The lower end face of the sheath abuts against a first inner clamping table arranged on the inner wall of the unsealing ring.
The lower end face of the setting pipe is propped against an inner clamping table arranged on the inner wall of the lower buckle adapter, and the lower buckle adapter and the setting pipe are sealed.
And a second inner clamping table is arranged on the inner wall of the lower end of the unsealing ring, and the second inner clamping table axially limits an outer clamping table arranged on the outer wall of the lower buckle adapter.
Example 3:
referring to fig. 1, the present invention provides a technical solution: the utility model provides a concentric double-barrelled liquid accuse formula annular space safety packer that uses, includes center tube 2, packing element mechanism, anchoring mechanism, still includes two-way actuating mechanism, sets up a tub 3, set up the casing suit outside the center tube, set up between inside pipe wall and the center tube outer wall and constitute the liquid accuse and beat annular space passageway, packing element mechanism, anchoring mechanism, two-way actuating mechanism all suit are at the setting outside of tubes wall, packing element mechanism lower extreme is connected to two-way actuating mechanism upper end, and anchoring mechanism upper end is connected to two-way actuating mechanism lower extreme, the setting pipe is seted up and is radially passed the pressure hole, and this radially passes the pressure hole and makes two-way actuating mechanism and liquid accuse beat annular space passageway and communicate each other.
The upper end of the central pipe and the upper end of the rubber cylinder mechanism are both connected with an upper joint 1, the upper joint is provided with an upper liquid control channel which is axially communicated, and the upper liquid control channel is communicated with the liquid control pressurizing annular channel.
The upper end face of the setting pipe is uniformly provided with radial through grooves, and the upper hydraulic control channel is smoothly communicated with the hydraulic control pressurizing annular channel through the radial through grooves.
The packing element mechanism includes packing element 5, upper locating ring 4, the packing element sets up two at least, and the packing element sets up spacer ring 6 between two liang, and the packing element up end of the top withstands upper locating ring terminal surface down, goes up locating ring screw thread formula and connects the top.
And a sealing ring is arranged between the outer wall of the upper positioning ring and the inner wall of the upper joint, and a sealing ring is arranged between the inner wall of the upper positioning ring and the outer wall of the setting pipe.
And a locking mechanism is arranged between the bidirectional driving mechanism and the rubber cylinder mechanism.
The locking mechanism comprises a lock sleeve 7, a lock ring 10 and a press ring 9, the lower end of the press ring is connected with a cylinder body of the bidirectional driving mechanism in a threaded manner, the press ring is sleeved outside the lock sleeve and fixed through shear pins 8, the inner wall of the lock ring is connected with the outer wall of the lock sleeve in a crenellated manner, and the lower end of the press ring presses the upper end of the lock ring. The setting piston upwards pushes up the lock sleeve, the shear pin 8 breaks, the lock sleeve continues to go upward to set the packing element, simultaneously, the outer ridge buckle of the outer wall of the lock sleeve goes upward along the inner ridge buckle of the inner wall of the lock ring, due to the principle of the ridge buckle, the lock sleeve can only go upward, the lock sleeve is in a locked state downward, the lock ring is limited by the compression ring and the clamping table of the inner wall of the cylinder body, and as long as the cylinder body is not moved, the extrusion setting of the lock sleeve on the packing element cannot be loosened.
The bidirectional driving mechanism comprises a cylinder body 11, a setting piston 12 and a lower piston 14, the setting piston and the lower piston are arranged inside the cylinder body, the upper end face of the setting piston corresponds to the lower end face of the lock sleeve, the lower end of the lower piston is connected with the anchoring mechanism, and the space between the setting piston and the lower piston is communicated with a radial pressure transmission hole formed in the setting pipe 3.
The inner wall of the cylinder body is provided with an inner clamping table, the upper end face of the inner clamping table props against the lower end of the locking ring, and the locking ring and the inner clamping table are axially limited.
The lower piston is fixedly connected with the cylinder body through shear pins.
The outer wall of the setting pipe is provided with a lock block groove, a lock block 13 is installed in the lock block groove, and the lock ring simultaneously limits the setting piston and the lower piston in the axial direction.
The anchoring mechanism comprises an upper cone 15, a slip sleeve 17, slips 18, a plate spring 19 and a lower cone 20, the slips are arranged in a slip groove which is formed in the slip sleeve and is radially communicated, the slips are fixed on the plate spring, two ends of the plate spring are fixed at two ends of the slip groove, the lower end of the upper cone extends into the slip sleeve to correspond to the upper end of the slips, the upper end of the upper cone is connected with a lower piston, and the upper end of the lower cone extends into the slip sleeve to correspond to the lower end of the slips.
The upper cone and the slip sleeve are fixed through the shear pins 16, and an inner clamping table arranged on the inner wall of the upper end of the slip sleeve axially limits an outer clamping table arranged on the outer wall of the upper cone.
The bottom end of the slip sleeve is in threaded connection with a lower cone retaining ring 21, the upper end face of the lower cone retaining ring is axially limited relative to an outer clamping table arranged on the outer wall of the lower cone, and the lower cone retaining ring is fixedly connected with the slip sleeve through shear pins.
And the lower end of the lower cone is connected with a packer deblocking mechanism.
Packer deblocking mechanism includes sheath 22, down becomes joint 23, deblocking ring 24, the cone is connected down through the shear pin in the sheath upper end, and the sheath lower extreme passes through the shear pin and connects deblocking ring, deblocking ring passes through shear pin 25 and connects down the joint, become the joint upper end down and connect the setting pipe through the shear pin, constitute the annular space down between joint and the center tube, this annular space is as the lower part extension passageway that the annular space passageway was suppressed to the liquid accuse.
The lower end of the central pipe is connected with a lower joint 26 in a threaded mode, the lower joint is provided with a lower liquid control channel which is axially communicated, and the lower liquid control channel is communicated with the liquid control pressurizing annular channel through the lower extending channel.
And the lower end face of the lower buckle adapter is uniformly provided with radial through grooves, and the radial through grooves enable the lower hydraulic control channel to be smoothly communicated with the lower extension channel.
Example 4:
referring to fig. 1, the present invention provides a technical solution: the utility model provides a concentric double-barrelled liquid accuse formula annular space safety packer that uses, includes center tube 2, packing element mechanism, anchoring mechanism, still includes two-way actuating mechanism, sets up a tub 3, set up the casing suit outside the center tube, set up between inside pipe wall and the center tube outer wall and constitute the liquid accuse and beat annular space passageway, packing element mechanism, anchoring mechanism, two-way actuating mechanism all suit are at the setting outside of tubes wall, packing element mechanism lower extreme is connected to two-way actuating mechanism upper end, and anchoring mechanism upper end is connected to two-way actuating mechanism lower extreme, the setting pipe is seted up and is radially passed the pressure hole, and this radially passes the pressure hole and makes two-way actuating mechanism and liquid accuse beat annular space passageway and communicate each other.
The upper end of the central pipe and the upper end of the rubber cylinder mechanism are both connected with an upper joint 1, the upper joint is provided with an upper liquid control channel which is axially communicated, and the upper liquid control channel is communicated with the liquid control pressurizing annular channel.
The packing element mechanism includes packing element 5, upper locating ring 4, the packing element sets up two at least, and the packing element sets up spacer ring 6 between two liang, and the packing element up end of the top withstands upper locating ring terminal surface down, goes up locating ring screw thread formula and connects the top.
And a locking mechanism is arranged between the bidirectional driving mechanism and the rubber cylinder mechanism.
The locking mechanism comprises a lock sleeve 7, a lock ring 10 and a press ring 9, the lower end of the press ring is connected with a cylinder body of the bidirectional driving mechanism in a threaded manner, the press ring is sleeved outside the lock sleeve and fixed through shear pins 8, the inner wall of the lock ring is connected with the outer wall of the lock sleeve in a crenellated manner, and the lower end of the press ring presses the upper end of the lock ring. The setting piston upwards pushes up the lock sleeve, the shear pin 8 breaks, the lock sleeve continues to go upward to set the packing element, simultaneously, the outer ridge buckle of the outer wall of the lock sleeve goes upward along the inner ridge buckle of the inner wall of the lock ring, due to the principle of the ridge buckle, the lock sleeve can only go upward, the lock sleeve is in a locked state downward, the lock ring is limited by the compression ring and the clamping table of the inner wall of the cylinder body, and as long as the cylinder body is not moved, the extrusion setting of the lock sleeve on the packing element cannot be loosened.
The bidirectional driving mechanism comprises a cylinder body 11, a setting piston 12 and a lower piston 14, the setting piston and the lower piston are arranged inside the cylinder body, the upper end face of the setting piston corresponds to the lower end face of the lock sleeve, the lower end of the lower piston is connected with the anchoring mechanism, and the space between the setting piston and the lower piston is communicated with a radial pressure transmission hole formed in the setting pipe 3.
The lower piston is fixedly connected with the cylinder body through shear pins.
The outer wall of the setting pipe is provided with a lock block groove, a lock block 13 is installed in the lock block groove, and the lock ring simultaneously limits the setting piston and the lower piston in the axial direction.
The anchoring mechanism comprises an upper cone 15, a slip sleeve 17, slips 18, a plate spring 19 and a lower cone 20, the slips are arranged in a slip groove which is formed in the slip sleeve and is radially communicated, the slips are fixed on the plate spring, two ends of the plate spring are fixed at two ends of the slip groove, the lower end of the upper cone extends into the slip sleeve to correspond to the upper end of the slips, the upper end of the upper cone is connected with a lower piston, and the upper end of the lower cone extends into the slip sleeve to correspond to the lower end of the slips.
The bottom end of the slip sleeve is in threaded connection with a lower cone retaining ring 21, the upper end face of the lower cone retaining ring is axially limited relative to an outer clamping table arranged on the outer wall of the lower cone, and the lower cone retaining ring is fixedly connected with the slip sleeve through shear pins.
And the lower end of the lower cone is connected with a packer deblocking mechanism.
Packer deblocking mechanism includes sheath 22, down becomes joint 23, deblocking ring 24, the cone is connected down through the shear pin in the sheath upper end, and the sheath lower extreme passes through the shear pin and connects deblocking ring, deblocking ring passes through shear pin 25 and connects down the joint, become the joint upper end down and connect the setting pipe through the shear pin, constitute the annular space down between joint and the center tube, this annular space is as the lower part extension passageway that the annular space passageway was suppressed to the liquid accuse.
The lower end of the central pipe is connected with a lower joint 26 in a threaded mode, the lower joint is provided with a lower liquid control channel which is axially communicated, and the lower liquid control channel is communicated with the liquid control pressurizing annular channel through the lower extending channel.
Example 5:
referring to fig. 1, the present invention provides a technical solution: the utility model provides a concentric double-barrelled liquid accuse formula annular space safety packer that uses, includes center tube 2, packing element mechanism, anchoring mechanism, still includes two-way actuating mechanism, sets up a tub 3, set up the casing suit outside the center tube, set up between inside pipe wall and the center tube outer wall and constitute the liquid accuse and beat annular space passageway, packing element mechanism, anchoring mechanism, two-way actuating mechanism all suit are at the setting outside of tubes wall, packing element mechanism lower extreme is connected to two-way actuating mechanism upper end, and anchoring mechanism upper end is connected to two-way actuating mechanism lower extreme, the setting pipe is seted up and is radially passed the pressure hole, and this radially passes the pressure hole and makes two-way actuating mechanism and liquid accuse beat annular space passageway and communicate each other.
The packing element mechanism includes packing element 5, upper locating ring 4, the packing element sets up two at least, and the packing element sets up spacer ring 6 between two liang, and the packing element up end of the top withstands upper locating ring terminal surface down, goes up locating ring screw thread formula and connects the top.
And a locking mechanism is arranged between the bidirectional driving mechanism and the rubber cylinder mechanism.
The locking mechanism comprises a lock sleeve 7, a lock ring 10 and a press ring 9, the lower end of the press ring is connected with a cylinder body of the bidirectional driving mechanism in a threaded manner, the press ring is sleeved outside the lock sleeve and fixed through shear pins 8, the inner wall of the lock ring is connected with the outer wall of the lock sleeve in a crenellated manner, and the lower end of the press ring presses the upper end of the lock ring. The setting piston upwards pushes up the lock sleeve, the shear pin 8 breaks, the lock sleeve continues to go upward to set the packing element, simultaneously, the outer ridge buckle of the outer wall of the lock sleeve goes upward along the inner ridge buckle of the inner wall of the lock ring, due to the principle of the ridge buckle, the lock sleeve can only go upward, the lock sleeve is in a locked state downward, the lock ring is limited by the compression ring and the clamping table of the inner wall of the cylinder body, and as long as the cylinder body is not moved, the extrusion setting of the lock sleeve on the packing element cannot be loosened.
The bidirectional driving mechanism comprises a cylinder body 11, a setting piston 12 and a lower piston 14, the setting piston and the lower piston are arranged inside the cylinder body, the upper end face of the setting piston corresponds to the lower end face of the lock sleeve, the lower end of the lower piston is connected with the anchoring mechanism, and the space between the setting piston and the lower piston is communicated with a radial pressure transmission hole formed in the setting pipe 3.
The outer wall of the setting pipe is provided with a lock block groove, a lock block 13 is installed in the lock block groove, and the lock ring simultaneously limits the setting piston and the lower piston in the axial direction.
The anchoring mechanism comprises an upper cone 15, a slip sleeve 17, slips 18, a plate spring 19 and a lower cone 20, the slips are arranged in a slip groove which is formed in the slip sleeve and is radially communicated, the slips are fixed on the plate spring, two ends of the plate spring are fixed at two ends of the slip groove, the lower end of the upper cone extends into the slip sleeve to correspond to the upper end of the slips, the upper end of the upper cone is connected with a lower piston, and the upper end of the lower cone extends into the slip sleeve to correspond to the lower end of the slips.
And the lower end of the lower cone is connected with a packer deblocking mechanism.
Packer deblocking mechanism includes sheath 22, down becomes joint 23, deblocking ring 24, the cone is connected down through the shear pin in the sheath upper end, and the sheath lower extreme passes through the shear pin and connects deblocking ring, deblocking ring passes through shear pin 25 and connects down the joint, become the joint upper end down and connect the setting pipe through the shear pin, constitute the annular space down between joint and the center tube, this annular space is as the lower part extension passageway that the annular space passageway was suppressed to the liquid accuse.
In the description of the present invention, it should be understood that the orientation indication or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description of the present invention, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (14)
1. The utility model provides a concentric double-barrelled liquid accuse formula annular space safety packer that uses, includes center tube, packing element mechanism, anchoring mechanism, its characterized in that still includes two-way actuating mechanism, sits and seals the pipe, sit and seal the pipe suit outside the center tube, sit and seal and constitute the liquid accuse between inside pipe wall and the center tube outer wall and beat annular space passageway, packing element mechanism, anchoring mechanism, two-way actuating mechanism all suit are at sitting and seal the outside of tubes wall, two-way actuating mechanism upper end is through locking mechanism connection packing element mechanism lower extreme, and anchoring mechanism upper end is connected to two-way actuating mechanism lower extreme, packer deblocking mechanism is connected to anchoring mechanism lower extreme, it radially passes the pressure hole to set up to sit and seals the pipe, and this radially passes the pressure hole and makes two-way actuating mechanism and liquid accuse beat annular space.
2. The concentric double-pipe hydraulic control type annular safety packer as claimed in claim 1, wherein the upper end of the central pipe and the upper end of the rubber sleeve mechanism are both connected with an upper joint, the upper joint is provided with an upper hydraulic control channel which is axially communicated, the upper hydraulic control channel is communicated with the hydraulic control pressurizing annular channel, the upper joint is a 4-in female thread buckle, the upper end of the central pipe and the upper end of the rubber sleeve mechanism are both screwed with the upper joint, and the inner wall of the upper port of the upper hydraulic control channel is provided with an NPT thread buckle.
3. The hydraulic control type annular safety packer for the concentric double pipes as claimed in claim 2, wherein the upper end surface of the setting pipe is uniformly provided with radial through slots, and the radial through slots enable the upper hydraulic control channel to be smoothly communicated with the hydraulic control pressurizing annular channel.
4. The hydraulic control type annular safety packer for the concentric double pipes according to claim 2 or 3, wherein the rubber cylinder mechanism comprises at least two rubber cylinders and an upper positioning ring, a spacer ring is arranged between every two rubber cylinders, the upper end face of the rubber cylinder at the top abuts against the lower end face of the upper positioning ring, the upper positioning ring is in thread-buckling type connection with an upper joint, a sealing ring is arranged between the outer wall of the upper positioning ring and the inner wall of the upper joint, and a sealing ring is arranged between the inner wall of the upper positioning ring and the outer wall of the setting pipe.
5. The hydraulic control type annular safety packer for the concentric double pipes as claimed in claim 1, 2 or 3, wherein the locking mechanism comprises a lock sleeve, a lock ring and a press ring, the lower end of the press ring is connected with a cylinder body of the bidirectional driving mechanism in a threaded manner, the press ring is sleeved outside the lock sleeve and fixed through shear pins, the inner wall of the lock ring is connected with the outer wall of the lock sleeve in a button type, and the lower end of the press ring presses the upper end of the lock ring.
6. The hydraulic control type annular safety packer for the concentric double pipes as claimed in claim 5, wherein the bidirectional driving mechanism comprises a cylinder body, a setting piston and a lower piston, the setting piston and the lower piston are arranged inside the cylinder body, the upper end surface of the setting piston corresponds to the lower end surface of the lock sleeve, the lower end of the lower piston is connected with the anchoring mechanism, the space between the setting piston and the lower piston is communicated with a radial pressure transmission hole formed in the setting pipe, an inner clamping table is arranged on the inner wall of the cylinder body, the upper end surface of the inner clamping table is abutted against the lower end of the lock ring, namely the lock ring and the inner clamping table simultaneously axially limit the lock ring, and the lower piston is connected and fixed with the cylinder body through a shear pin.
7. The hydraulic control type annular safety packer for the concentric double pipes as claimed in claim 6, wherein the setting pipe is provided with a locking block groove on the outer wall, a locking block is arranged in the locking block groove, and the locking ring simultaneously and axially limits the setting piston and the lower piston.
8. The hydraulic control type annular safety packer for the concentric double pipes according to claim 6, wherein a sealing ring is arranged between the inner wall of the setting piston and the outer wall of the setting pipe, a sealing ring is arranged between the outer wall of the setting piston and the inner wall of the cylinder body, a sealing ring is arranged between the inner wall of the lower piston and the outer wall of the setting pipe, and a sealing ring is arranged between the outer wall of the lower piston and the inner wall of the cylinder body.
9. The hydraulic control type annular safety packer for the concentric double pipes as claimed in claim 6, wherein the anchoring mechanism comprises an upper cone, a slip sleeve, a slip, a plate spring and a lower cone, the slip is arranged in a slip groove formed in the slip sleeve and radially penetrating through the slip groove, the slip is fixed on the plate spring, two ends of the plate spring are fixed at two ends of the slip groove, the lower end of the upper cone extends into the slip sleeve to correspond to the upper end of the slip, the upper end of the upper cone is connected with a lower piston, the upper end of the lower cone extends into the slip sleeve to correspond to the lower end of the slip, the upper end of the upper cone is supported on an inner ring table formed on the inner wall of the lower piston, the upper cone and the lower piston are connected and fixed through shear pins, the upper cone and the slip sleeve are fixed through shear pins, and the inner table formed on the inner wall of the upper end of the slip sleeve axially limits an outer table formed on the.
10. The hydraulic control type annular safety packer for the concentric double-pipe according to claim 9, wherein the bottom end of the slip sleeve is in threaded connection with a lower cone retaining ring, the upper end of the lower cone retaining ring axially limits an outer clamping platform formed on the outer wall of the lower cone, and the lower cone retaining ring is fixedly connected with the slip sleeve through a shear pin.
11. The hydraulic control type annular safety packer for the concentric double pipes according to claim 9, wherein the packer unsetting mechanism comprises a sheath, a lower fastening joint and an unsetting ring, the upper end of the sheath is connected with the lower cone through a shear pin, the lower end of the sheath is connected with the unsetting ring through a shear pin, the unsetting ring is connected with the lower fastening joint through a shear pin, the upper end of the lower fastening joint is connected with the setting pipe through a shear pin, an annular space is formed between the lower fastening joint and the central pipe, and the annular space is used as a lower extension channel of a hydraulic control pressurizing annular channel.
12. The concentric double-pipe hydraulic control type annular safety packer as claimed in claim 11, wherein the lower end of the central pipe is connected with a lower joint in a threaded manner, the lower joint is provided with a lower hydraulic control channel which is axially communicated, the lower hydraulic control channel is communicated with the hydraulic control pressurizing annular channel through the lower extension channel, the lower end of the lower variable buckle joint extends into the lower joint, a sealing ring is arranged between the outer wall of the lower variable buckle joint and the inner wall of the lower joint, the lower end face of the lower variable buckle joint is uniformly provided with radial through grooves, and the radial through grooves enable the lower hydraulic control channel to be smoothly communicated with the lower extension channel.
13. The concentric double-pipe hydraulic control type annular safety packer as claimed in claim 12, wherein the lower end face of the sheath abuts against a first inner clamping table formed on the inner wall of the unsealing ring, the lower end face of the setting pipe abuts against an inner clamping table formed on the inner wall of the lower variable buckle joint, the lower variable buckle joint and the setting pipe are sealed, a second inner clamping table is formed on the inner wall of the lower end of the unsealing ring, the second inner clamping table axially limits an outer clamping table formed on the outer wall of the lower variable buckle joint, and an NPT thread buckle is formed on the inner wall of a lower port of the lower hydraulic control channel.
14. A hydraulic control type annular safety packer for concentric double pipes according to claim 12 or 13, wherein the lower end of the lower joint is in thread-type connection with a lower short section which is a 4-inch male thread.
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| CN201920120059.2U CN209838364U (en) | 2019-01-23 | 2019-01-23 | Concentric double-barrelled hydraulic control formula annular space safety packer that uses |
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| CN201920120059.2U CN209838364U (en) | 2019-01-23 | 2019-01-23 | Concentric double-barrelled hydraulic control formula annular space safety packer that uses |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112746826A (en) * | 2020-12-31 | 2021-05-04 | 湘潭大学 | Iris light ring type packer for annular pipeline |
| CN112832708A (en) * | 2020-12-31 | 2021-05-25 | 湘潭大学 | Hook type packer for annular pipeline |
| CN115217440A (en) * | 2022-07-15 | 2022-10-21 | 中国石油天然气集团有限公司 | Stroke control type hydraulic starting packer and using method thereof |
-
2019
- 2019-01-23 CN CN201920120059.2U patent/CN209838364U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112746826A (en) * | 2020-12-31 | 2021-05-04 | 湘潭大学 | Iris light ring type packer for annular pipeline |
| CN112832708A (en) * | 2020-12-31 | 2021-05-25 | 湘潭大学 | Hook type packer for annular pipeline |
| CN112746826B (en) * | 2020-12-31 | 2023-08-29 | 湘潭大学 | Iris diaphragm type packer for annular pipeline |
| CN112832708B (en) * | 2020-12-31 | 2023-08-29 | 湘潭大学 | Hook type packer for annular pipeline |
| CN115217440A (en) * | 2022-07-15 | 2022-10-21 | 中国石油天然气集团有限公司 | Stroke control type hydraulic starting packer and using method thereof |
| CN115217440B (en) * | 2022-07-15 | 2024-03-29 | 中国石油天然气集团有限公司 | Stroke control type hydraulic starting packer and application method thereof |
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