CN212867490U

CN212867490U - Hydraulic packer

Info

Publication number: CN212867490U
Application number: CN202021846098.XU
Authority: CN
Inventors: 李鹏; 劳明; 刘君毅; 吕林; 罗晓东; 张开峰; 王占伟; 姜海强; 赵磊; 尚俊涛; 王蓬蓬
Original assignee: DONGYING BAIHUA PETROLEUM TECHNOLOGY DEVELOPMENT CO LTD
Current assignee: DONGYING BAIHUA PETROLEUM TECHNOLOGY DEVELOPMENT CO LTD
Priority date: 2020-08-30
Filing date: 2020-08-30
Publication date: 2021-04-02
Anticipated expiration: 2030-08-30

Abstract

A hydraulic packer comprises an upper joint, a piston, a push pipe, a separation joint, a hydraulic cylinder, a valve ball, a supporting pipe, a release pin, a setting shear pin, a locking ring, a deblocking shear pin, a connecting pipe, a fishing joint, a rubber cylinder shaft, an upper rubber cylinder joint, an inner pipe, a rubber cylinder, a lower rubber cylinder joint, an upper cone, slips, a slip sleeve, a blocking joint, a lower cone and a safety joint. The seat of suppressing continues 2MPa that steps up after sealing, makes the release pin broken, and the stay tube hangs down in the separation joint on the circular bead in the separation joint, loses the support to the separation joint lower part, and the strip body shrink that the separation joint lower part was milled and is left out from the internal thread on inner tube upper portion, realizes the release, consequently, the utility model discloses need not rotatory just can the release, also can release smoothly in inclined shaft and horizontal well, overcome the problem that prior art exists, can guarantee that the seal work succeeds smoothly, has apparent economic benefits.

Description

Hydraulic packer

Technical Field

The utility model discloses a layering oil recovery instrument in pit that oil field oil recovery used is a packer, specifically is a hydraulic packer.

Background

The implementation of the layered water blocking and oil production technology and the sealing of the high water-bearing stratum is an effective method for controlling the water content rise of the oil well. The layered blocking water adopts a packer, the existing packer has more types, but the problems of easy failure, gliding, low bearing capacity, low construction success rate, difficult deblocking and the like exist. The packer is characterized in that one type of packer is used for pressing and setting after the packer is brought to an oil layer position by an oil pipe, then the oil pipe is separated from the packer, the process is called releasing on site, the packer anchoring and compression rubber sleeve of the type adopt the same set of mechanism, although the structure is simple, the packer anchoring and compression rubber sleeve are unreliable, the slips are easy to scale and sand jam, the deblocking is difficult, the releasing operation is required, the well repairing cost is high, and the packer cannot be used. Chinese patent 2009202264757 bridge plug releasing packer, for rotating releasing, needs to lift the tubular column to make the packer at neutral point, avoids the thread to be released from being pressed and pulled, then rotates the tubular column to make it release, this needs accurate data and super operation technique, sometimes fails to reach these requirements, the situation of difficult to operate or unsuccessful releasing occurs. The above patent is more difficult to rotate in inclined wells and horizontal wells, and accidents that cannot be released often occur.

Disclosure of Invention

The utility model aims at designing a hydraulic packer, overcoming the problem that prior art exists, making it easily give up, guarantee that seal work succeeds smoothly.

The purpose of the utility model is realized like this: the device comprises an upper joint, a piston, a push pipe, a separation joint, a hydraulic cylinder, a valve ball, a supporting pipe, a release pin, a setting shear pin, a locking ring, a deblocking shear pin, a connecting pipe, a salvaging joint, a rubber cylinder shaft, an upper rubber cylinder joint, an inner pipe, a rubber cylinder, a lower rubber cylinder joint, an upper cone, a slip sleeve, a blocking joint, a lower cone and a safety joint, wherein the lower external thread of the upper joint is connected with the upper part of the hydraulic cylinder, the joint is kept sealed, the lower internal thread of the upper joint is connected with the upper part of the separation joint, the piston is arranged between the hydraulic cylinder and the separation joint, the push pipe is arranged below the piston, the push pipe is connected with the salvaging joint through the setting shear pin, the lower part of the push pipe is connected with the connecting pipe, the lower part of the push pipe is provided with an inner one-way thread, the salvaging joint is sleeved outside the upper part of the inner pipe, the, the outer one-way thread is buckled with the inner one-way thread of the locking ring and then the connecting pipe is locked, so that the connecting pipe and the fishing joint cannot move relatively, the lower part of the separation joint is in threaded connection with the upper part of the inner pipe, the connecting thread is a left-hand thread, the fishing joint is connected with the inner pipe into a whole by the deblocking shear pin, the upper part of the fishing joint is provided with the fishing thread, the rubber cylinder shaft is suspended in the upper rubber cylinder joint, the lower part of the connecting pipe is connected with the upper rubber cylinder joint, the rubber cylinder shaft is sleeved outside the inner pipe, the rubber cylinder is sleeved on the rubber cylinder shaft, the rubber cylinder seat is arranged on the lower rubber cylinder joint, the lower part of the rubber cylinder shaft is in threaded connection with the upper part of the upper cone, the lower rubber cylinder joint is in threaded connection with the upper part of the upper cone, the slip sleeve is suspended on the upper cone, the lower cone is arranged in the slip sleeve, the slip is arranged between the upper cone and the lower cone, the slip on the outer, the stop joint is connected with the lower part of the slip sleeve, the lower cone body is hung on the stop joint, the separation joint is provided with a pressure transmitting hole, the pressure transmitting hole can transmit pressure to the upper end of the piston, the lower part of the separation joint is milled into a strip body to enable the lower part of the separation joint to radially contract, the supporting tube is installed in the separation joint, a gap between the supporting tube and the separation joint is sealed by a sealing ring installed on the outer wall of the upper part of the supporting tube, the supporting tube can be hung on a shoulder in the separation joint after descending for a certain stroke in the separation joint, the outer diameter of the lower part of the supporting tube is equal to the inner diameter of the lower part of the separation joint, the strip body milled from the lower part of the separation joint cannot radially contract to ensure that the lower part thread of the separation joint and the upper part thread of the inner tube are kept in a connection state, the supporting tube is connected to the separation joint by a release pin, the upper part of the supporting pipe is in a closed state, the valve ball is positioned below the pressure transmission hole, the separation joint is provided with a discharge hole, when the supporting pipe is hung on a shoulder in the separation joint in a downward mode in the separation joint, the sealing ring arranged on the outer wall of the upper part of the supporting pipe is positioned below the discharge hole, the upper part of the safety joint is in threaded connection with the lower part of the lower cone, the connection position keeps sealing, and the connecting thread is left-handed.

The utility model has the advantages that: when the pressure is inwards pressed, the slips are anchored, the rubber cylinder expands the sealing sleeve, and the requirements of layered blocking water and oil production can be met. The seat of suppressing continues 2MPa that steps up after sealing, makes the release pin broken, and the stay tube hangs down in the separation joint on the circular bead in the separation joint, loses the support to the separation joint lower part, and the strip body shrink that the separation joint lower part was milled and is left out from the internal thread on inner tube upper portion, realizes the release, consequently, the utility model discloses need not rotatory just can the release, also can release smoothly in inclined shaft and horizontal well, overcome the problem that prior art exists, can guarantee that the seal work succeeds smoothly, has apparent economic benefits.

Drawings

Fig. 1 is an assembly view of an embodiment of the present invention.

Fig. 2 is an upper portion of fig. 1.

Detailed Description

Embodiments of the present invention will be described below with reference to the accompanying drawings.

As shown in the figure, the embodiment of the utility model comprises an upper joint 1, a piston 2, a push pipe 3, a separation joint 4, a hydraulic cylinder 5, a valve ball 6, a support pipe 7, a release pin 8, a setting shear pin 9, a lock ring 10, a deblocking shear pin 11, a union 12, a fishing joint 13, a rubber cylinder shaft 14, an upper rubber cylinder joint 15, an inner pipe 16, a rubber cylinder 17, a lower rubber cylinder joint 18, an upper cone 19, a slip 20, a slip sleeve 21, a blocking joint 22, a lower cone 23 and a safety joint 24, wherein the lower external thread of the upper joint 1 is connected with the upper part of the hydraulic cylinder 5, the joint keeps sealed, the lower internal thread of the upper joint 1 is connected with the upper part of the separation joint 4, the piston 2 is arranged between the hydraulic cylinder 5 and the separation joint 4, the push pipe 3 is arranged below the piston 2, the push pipe 3 is connected with the fishing joint 13 through the setting shear pin 9, the lower part of the push pipe 3 is connected with the union 12, the lock, the locking ring 10 is provided with inner one-way threads, the fishing joint 13 is sleeved outside the upper part of the inner pipe 16, the outer one-way threads 13-2 are arranged outside the fishing joint 13, the outer one-way threads 13-2 can be buckled with the inner one-way threads of the locking ring 10, the outer one-way threads 13-2 are buckled with the inner one-way threads of the locking ring 10 to lock the connecting pipe 12, so that the connecting pipe 12 and the fishing joint 13 cannot move relatively, the lower part of the separation joint 4 is in threaded connection with the upper part of the inner pipe 16, the connecting threads are left-handed threads, the fishing joint 13 and the inner pipe 16 are connected into a whole by the deblocking shear pin 11, the upper part of the fishing joint 13 is provided with the fishing threads 13-1, the rubber cylinder shaft 14 is suspended in the upper rubber cylinder joint 15, the lower part of the connecting pipe 12 is connected with the upper rubber cylinder joint 15, the rubber cylinder shaft 14 is sleeved outside the inner pipe 16, the rubber cylinder 17 is sleeved, the lower part of a rubber cylinder shaft 14 is connected with an upper part internal thread of an upper cone body 19, a lower rubber cylinder joint 18 is connected with an upper part external thread of the upper cone body 19, a slip sleeve 21 is hung on the upper cone body 19, a lower cone body 23 is installed in the slip sleeve 21, a slip 20 is installed between the upper cone body 19 and the lower cone body 23, a clamping tooth on the outer surface of the slip 20 is positioned at a window of the slip sleeve 21, the lower part of an inner pipe 16 is connected with the upper part of the lower cone body 23, a stop joint 22 is connected with the lower part of the slip sleeve 21, the lower cone body 23 is hung on the stop joint 22, a pressure transmitting hole 4-1 is arranged on a separation joint 4, the pressure transmitting hole 4-1 can transmit pressure to the upper end of a piston 2, the lower part of the separation joint 4 is milled into a strip body so that the lower part of the separation joint 4 can be radially contracted, a supporting pipe 7 is installed in the separation joint 4, and a gap between the supporting pipe 7 and, the support tube 7 can be hung on a shoulder in the separation joint 4 after descending for a stroke in the separation joint 4 (the hanging point is positioned on the strip milled at the lower part of the separation joint), the outer diameter of the lower part of the support tube 7 is equal to the inner diameter of the lower part of the separation joint 4, so that the strip milled at the lower part of the separation joint 4 cannot contract radially, the lower thread of the separation joint 4 is ensured to be kept connected with the upper thread of the inner tube 16, the support tube 7 is connected on the separation joint 4 by a release pin 8, the diameter of the valve ball 6 is larger than the inner diameter of the support tube 7, the valve ball 6 can block the upper port of the support tube 7, so that the upper part of the support tube 7 is in a closed state, the valve ball 6 is positioned below the pressure transmission hole 4-1, the separation joint 4 is provided with a drainage hole 4-2, when the support tube 7 is hung on the shoulder in the separation joint 4 in the downward direction, a sealing ring arranged on, the upper part of the safety joint 24 is in threaded connection with the lower part of the lower cone 23, the connection part keeps sealed, and the connection thread is a left-handed thread.

When the well is lowered, the valve ball 6 is not loaded, the valve ball 6 is thrown in after the well is lowered to a designed position, the valve ball 6 is seated on the support pipe 7 and is pressed inwards (18-20 MPa), hydraulic pressure is transmitted to the piston 2 from the pressure transmission hole 4-1, the push pipe 3 is made to descend to cut the setting shear pin 9, the push pipe 3 descends to make the upper cone 19 descend, the distance between the upper cone 19 and the lower cone 23 is shortened, the slips 20 are pushed to move outwards and are clamped on the wall of the casing, the push pipe 3 continues to descend to compress the rubber cylinder 17 to seal the casing, meanwhile, the locking ring 10 descends to be buckled on the outer one-way thread 13-2, the slips 20 are always clamped on the casing after the pressure disappears, and the rubber cylinder 17 always seals the casing.

And (3) boosting the pressure to 22 MPa, so that the release pin 8 is sheared, the support pipe 7 descends and hangs on the separation joint 4, the outer diameter of the lower part of the support pipe 7 is equal to the inner diameter of the lower part of the separation joint 4, the part of the outer diameter of the lower part of the support pipe extends out of the inner hole of the lower part of the separation joint 4, the constraint of milling the lower part of the separation joint 4 into a strip body is lost, the pipe column is lifted up, the lower part of the separation joint 4 is contracted, the connecting thread of the lower part of the separation joint 4 and the inner pipe. When the pipe column is lifted, liquid above the valve ball 6 is drained from the drain hole 4-2, and well liquid cannot reach the ground when the pipe column is lifted, so that the operation is convenient, and the environment is not polluted.

During salvaging, the salvaging device is put into the inner thread at the upper part of the salvaging connector 13 and then lifted, the unsealing shear pin 11 is broken, the salvaging connector 13 is separated from the inner pipe 16, the distance between the upper cone 19 and the lower cone 23 is increased, the slip 20 is withdrawn, the rubber sleeve 17 is withdrawn, and unsealing is realized.

Since other tools are also installed below the safety joint 24, these tools have a problem that they cannot be lifted out. When this kind of problem takes place, corotation tubular column makes the left-handed thread of being connected between cone 23 and the safety joint 24 thread off down, can will the utility model discloses a stay well part provides, carries out the processing of unfreezing to the card part again.

The utility model discloses also can just rotate oil pipe releasing. Because the lower part of the separation joint 4 is connected with the inner pipe 16 in a left-handed threaded manner, when the oil pipe is rotated positively, the connecting threads of the lower part of the separation joint 4 and the inner pipe 16 are separated, the separation joint 4 is lifted out, and the other part is left in the well for production.

Claims

1. The utility model provides a hydraulic packer, includes top connection (1), piston (2), ejector sleeve (3), separation joint (4), pneumatic cylinder (5), valve ball (6), stay tube (7), release pin (8), set shear pin (9), catch ring (10), deblocking shear pin (11), allies oneself with pipe (12), salvage joint (13), packing element axle (14), go up packing element joint (15), inner tube (16), packing element (17), lower packing element joint (18), go up cone (19), slips (20), slip cover (21), keep off joint (22), lower cone (23), safety joint (24), characterized by: the external thread at the lower part of the upper joint (1) is connected with the upper part of a hydraulic cylinder (5), the connection part keeps sealed, the internal thread at the lower part of the upper joint (1) is connected with the upper part of a separation joint (4), a piston (2) is arranged between the hydraulic cylinder (5) and the separation joint (4), a push pipe (3) is arranged below the piston (2), the push pipe (3) is connected with a fishing joint (13) through a setting shear pin (9), the lower part of the push pipe (3) is connected with a connecting pipe (12), a locking ring (10) is arranged between the lower part of the push pipe (3) and the connecting pipe (12), the locking ring (10) is provided with an internal one-way thread, the fishing joint (13) is sleeved outside the upper part of an inner pipe (16), an external one-way thread (13-2) is arranged outside the fishing joint (13), the external one-way thread (13-2) can be buckled with the internal one-way thread of the locking ring (10), the external one-way thread (13-2, the union pipe (12) and the fishing joint (13) can not move relatively, the lower part of the separation joint (4) is in threaded connection with the upper part of the inner pipe (16), the connecting thread is a left-handed thread, the fishing joint (13) and the inner pipe (16) are connected into a whole by an unsealing shear pin (11), the upper part of the fishing joint (13) is provided with a fishing thread (13-1), a rubber sleeve shaft (14) is suspended in an upper rubber sleeve joint (15), the lower part of the union pipe (12) is connected with the upper rubber sleeve joint (15), the rubber sleeve shaft (14) is sleeved outside the inner pipe (16), a rubber sleeve (17) is sleeved on the rubber sleeve shaft (14), the rubber sleeve (17) is seated on a lower rubber sleeve joint (18), the lower part of the rubber sleeve shaft (14) is connected with the upper part of an upper cone (19) through an internal thread, the lower rubber sleeve joint (18) is connected with an upper part of the upper cone (19) through an external thread, and a slip sleeve (21) is suspended on the, a lower cone (23) is arranged in a slip sleeve (21), a slip (20) is arranged between an upper cone (19) and the lower cone (23), a clamping tooth on the outer surface of the slip (20) is positioned at a window of the slip sleeve (21), the lower part of an inner pipe (16) is connected with the upper part of the lower cone (23), a blocking joint (22) is connected with the lower part of the slip sleeve (21), the lower cone (23) is hung on the blocking joint (22), a pressure transfer hole (4-1) is arranged on a separation joint (4), the pressure transfer hole (4-1) can transfer pressure to the upper end of a piston (2), the lower part of the separation joint (4) is milled into a strip body, so that the lower part of the separation joint (4) can radially contract, a supporting pipe (7) is arranged in the separation joint (4), and a gap between the supporting pipe (7) and the separation joint (4) is sealed by a sealing ring arranged on the outer wall of the upper part of the supporting pipe (7), the support tube (7) can be hung on a shoulder in the separation joint (4) after descending for a certain stroke in the separation joint (4), the outer diameter of the lower part of the support tube (7) is equal to the inner diameter of the lower part of the separation joint (4), a strip milled from the lower part of the separation joint (4) cannot radially contract, the lower thread of the separation joint (4) is ensured to be kept in a connection state with the upper thread of the inner tube (16), the support tube (7) is connected to the separation joint (4) through a release pin (8), the diameter of the valve ball (6) is larger than the inner diameter of the support tube (7), the valve ball (6) can block an upper port of the support tube (7), the upper part of the support tube (7) is in a closed state, the valve ball (6) is positioned below the pressure transfer hole (4-1), the separation joint (4) is provided with a drainage hole (4-2), and when the support tube (7) is hung on the shoulder in the separation joint (4) in the downward direction, the sealing ring arranged on the outer wall of the upper part of the supporting pipe (7) is positioned below the drainage hole (4-2), the upper part of the safety joint (24) is in threaded connection with the lower part of the lower cone (23), the connection part keeps sealing, and the connection thread is a left-handed thread.