Mechanical anchoring thermal recovery compensation integrated device and pipe string

Abstract

The present invention provides a mechanical anchoring thermal recovery compensation integrated device and a pipe string, which relates to the technical field of packers. The mechanical anchoring thermal recovery compensation integrated device comprises a base pipe; a slidable sleeve outside the base pipe is provided with a seal and a thrust piece; a threaded portion is provided on the outer wall of the base pipe, the threaded portion is an external thread, an internal thread matching the external thread is provided on the inner wall of the thrust piece, and a friction portion abutting against the inner wall of the wellbore is provided on the outer wall of the thrust piece; a limiting portion is provided on the outer wall of the base pipe, one end of the seal abuts against the limiting portion, and the other end abuts against the thrust piece. The pipe string comprises a mechanical anchoring thermal recovery compensation integrated device. The technical effect of convenient operation of the sealing work is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of packers, and in particular to a mechanical anchoring thermal recovery compensation integrated device and a pipe string. Background Art

[0002] When injecting steam into thermal recovery wells in oil fields, the injected steam is required to have high pressure and temperature to reduce the heat loss when the steam reaches the formation from the wellhead. In order to achieve the purpose of reducing heat loss, a high-temperature and high-pressure thermal recovery packer is generally installed on the steam injection string above the injection formation to prevent the steam from flowing into the wellbore and avoid heat loss.

[0003] There are many types of thermal recovery packers available. For example, the heat-sensitive sheet on the packer is deformed and stretched open after being heated above 300 degrees Celsius, so that the high-temperature resistant rubber tube on the packer expands to the inner wall of the wellbore to separate the wellbore. However, this operation is very time-consuming.

[0004] Therefore, providing an easy-to-operate mechanical anchoring thermal recovery compensation integrated device and a pipe string has become an important technical problem to be solved by those skilled in the art. Summary of the invention

[0005] The purpose of the present invention is to provide a mechanical anchoring thermal recovery compensation integrated device and a pipe string to alleviate the technical problem of inconvenient operation in the prior art.

[0006] In a first aspect, an embodiment of the present invention provides a mechanical anchoring thermal recovery and compensation integrated device, including a base pipe;

[0007] The slidable sleeve outside the base pipe is provided with a sealing member and a thrust member;

[0008] The outer wall of the base pipe is provided with a threaded portion, the threaded portion is an external thread, the inner wall of the thrust piece is provided with an internal thread adapted to the external thread, and the outer wall of the thrust piece is provided with a friction portion abutting against the inner wall of the wellbore;

[0009] The outer wall of the base pipe is provided with a limiting portion, one end of the sealing member abuts against the limiting portion, and the other end abuts against the thrust member.

[0010] In combination with the first aspect, an embodiment of the present invention provides a possible implementation of the first aspect, wherein the base pipe comprises a central pipe and a casing having a sealing sleeve disposed outside the central pipe;

[0011] The sleeve is connected to the central tube via a first connecting piece, and after the first connecting piece is cut off, the sleeve can slide relative to the central tube;

[0012] The sealing member and the thrust member are both sleeved on the sleeve, and the threaded portion is arranged outside the sleeve.

[0013] In combination with the first aspect, an embodiment of the present invention provides a possible implementation of the first aspect, wherein the thrust member includes a connecting portion and a thrust portion;

[0014] The internal thread is formed on the inner wall of the connecting portion, one end of the thrust portion is connected to the connecting portion, and the other end of the thrust portion is in contact with the sealing member.

[0015] In combination with the first aspect, an embodiment of the present invention provides a possible implementation of the first aspect, wherein the thrust member further includes a slip and a slip seat;

[0016] The slip is arranged in the slip seat through a slip spring, and a first through hole is provided on the slip seat;

[0017] The slip is located between the connecting portion and the thrust portion. Under the push of the connecting portion and the thrust portion, the slip can protrude out of the first through hole.

[0018] In combination with the first aspect, an embodiment of the present invention provides a possible implementation of the first aspect, wherein the connecting portion and the end of the thrust portion facing the slip are both provided with a wedge-shaped platform for pushing the slip.

[0019] In combination with the first aspect, an embodiment of the present invention provides a possible implementation of the first aspect, wherein the above-mentioned cava seat is connected to the connecting part through a second connecting member that can transmit torque, and the friction part is arranged on the cava seat.

[0020] In combination with the first aspect, an embodiment of the present invention provides a possible implementation of the first aspect, wherein a threaded member is provided on the sleeve, the threaded member forms the threaded portion, a mounting hole is provided on the sleeve, a stopper for connecting with the threaded member is provided in the mounting hole, so that the threaded member cannot move along the axis of the base pipe;

[0021] The stopper is provided with a first limit block for transmitting torque, and the first limit block can abut against the threaded member;

[0022] Alternatively, the threaded member is provided with a second limit block for transmitting torque, and the second limit block can abut against the stop member.

[0023] In combination with the first aspect, an embodiment of the present invention provides a possible implementation of the first aspect, wherein a decapsulation sleeve is sleeved on the bottom of the sleeve, and the decapsulation sleeve is connected to the sleeve via a third connecting member;

[0024] The mounting hole is a second through hole, the top of the decapsulation sleeve can block the second through hole, and the outer wall of the decapsulation sleeve is provided with a groove capable of accommodating the stopper;

[0025] After the third connecting member is cut off, the groove can correspond to the second through hole, and the threaded member can push the stopper into the groove, so that the threaded member can slide relative to the stopper along the axis of the base pipe;

[0026] The outer wall of the central tube is provided with a limiting member capable of abutting against the de-sealing sleeve, and the limiting member is located below the de-sealing sleeve.

[0027] In combination with the first aspect, an embodiment of the present invention provides a possible implementation of the first aspect, wherein an inclined surface is provided on the stop member, and the threaded member can abut against the inclined surface.

[0028] In a second aspect, an embodiment of the present invention provides a pipe string, including the mechanical anchoring thermal recovery and compensation integrated device.

[0029] Beneficial effects:

[0030] The present invention provides a mechanical anchoring thermal recovery compensation integrated device, comprising a base pipe; a sealing member and a thrust member are slidably sleeved outside the base pipe; a threaded portion is provided on the outer wall of the base pipe, the threaded portion is an external thread, an internal thread matching the external thread is provided on the inner wall of the thrust member, and a friction portion abutting against the inner wall of the wellbore is provided on the outer wall of the thrust member; a limiting portion is provided on the outer wall of the base pipe, one end of the sealing member abuts against the limiting portion, and the other end abuts against the thrust member.

[0031] When in use, the staff rotates the base pipe, and the threaded portion arranged outside the base pipe can drive the thrust piece adapted to the threaded portion to generate a rotational tendency. The friction between the friction portion arranged on the outer wall of the thrust piece and the wellbore can convert the rotational tendency of the thrust piece into an upward tendency, so that the thrust piece can push and squeeze the sealing element, so that the sealing element completes the sealing between the base pipe and the inner wall of the wellbore. The operation is convenient and there is no need to wait for the thermal sheet to heat up and open the sealing element.

[0032] The present invention provides a pipe string, including a mechanical anchoring thermal recovery compensation integrated device. Compared with the prior art, the pipe string has the above advantages, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0034] Figure 1 A half-section schematic diagram of a mechanical anchoring thermal recovery and compensation integrated device provided in an embodiment of the present invention;

[0035] Figure 2 for Figure 1 A partial enlarged view of the middle A;

[0036] Figure 3 A cross-sectional view of a casing in a mechanical anchoring thermal recovery and compensation integrated device provided in an embodiment of the present invention;

[0037] Figure 4 A schematic diagram of the connection of the casing, the thrust piece and the sealing piece in the mechanical anchoring thermal recovery and compensation integrated device provided in an embodiment of the present invention;

[0038] Figure 5 A schematic diagram of a structure in which a mounting hole is provided on a casing in a mechanical anchoring thermal recovery and compensation integrated device provided in an embodiment of the present invention;

[0039] Figure 6 A schematic diagram of the structure of a threaded portion and a stopper installed in a mounting hole on a casing in a mechanical anchoring thermal recovery and compensation integrated device provided in an embodiment of the present invention;

[0040] Figure 7 A schematic diagram of the structure of the threaded portion in the mechanical anchoring thermal recovery and compensation integrated device provided in an embodiment of the present invention;

[0041] Figure 8 A schematic diagram of the structure of a stopper in a mechanical anchoring thermal recovery and compensation integrated device provided in an embodiment of the present invention;

[0042] Fig. 9 A schematic diagram of the connection between the threaded portion of the second limit block and the stopper in the mechanical anchoring thermal mining compensation integrated device provided in an embodiment of the present invention;

[0043] Fig.10 A schematic diagram of the structure of a slip seat in a mechanical anchoring thermal recovery and compensation integrated device provided in an embodiment of the present invention;

[0044] Fig.11 A schematic diagram of the structure of slips and slip springs in a mechanical anchoring thermal recovery and compensation integrated device provided in an embodiment of the present invention;

[0045] Fig.12 A schematic diagram of the structure of the unsealing sleeve in the mechanical anchoring thermal recovery and compensation integrated device provided in an embodiment of the present invention;

[0046] Fig.13 A schematic diagram of the structure when the groove on the unsealing sleeve corresponds to the mounting hole in the mechanical anchoring thermal recovery compensation integrated device provided by an embodiment of the present invention;

[0047] Fig.14 A schematic diagram of the process in which the threaded portion presses the stopper into the groove when the central tube is lifted in the mechanical anchoring thermal recovery and compensation integrated device provided in an embodiment of the present invention.

[0048] icon:

[0049] 110-center tube; 111-limiting member; 120-sleeve; 121-threaded member; 122-first connecting member; 123-mounting hole; 124-stopper; 125-second limiting block; 126-inclined surface; 127-torque pin;

[0050] 200 - seal; 210 - inner seal ring;

[0051] 300-thrust piece; 301-internal thread; 302-friction part; 310-connecting part; 320-thrust part; 330-slip; 340-slip seat; 341-first through hole; 342-second connecting piece; 343-slot hole; 350-wedge-shaped platform; 360-slip spring;

[0052] 400 - unsealing sleeve; 410 - third connecting piece; 420 - groove. DETAILED DESCRIPTION

[0053] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0054] In the description of the present invention, it is necessary to understand that the terms "center", "length", "up", "down", "top", "bottom", "inside", "outside", "axial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0055] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0056] In the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection", "fixation" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0057] The present invention is further described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0058] See also Figure 1 and Figure 2 As shown, an embodiment of the present invention provides a mechanical anchoring thermal recovery compensation integrated device, including a base pipe; a sealing member 200 and a thrust member 300 are slidably sleeved outside the base pipe; a threaded portion is provided on the outer wall of the base pipe, the threaded portion is an external thread, an internal thread 301 adapted to the external thread is provided on the inner wall of the thrust member 300, and a friction portion 302 abutting against the inner wall of the wellbore is provided on the outer wall of the thrust member 300; a limiting portion is provided on the outer wall of the base pipe, one end of the sealing member 200 abuts against the limiting portion, and the other end abuts against the thrust member 300.

[0059] When in use, the staff rotates the base pipe, and the threaded portion arranged outside the base pipe can drive the thrust piece 300 adapted to the threaded portion to generate a rotational trend. The friction between the friction portion 302 arranged on the outer wall of the thrust piece 300 and the wellbore can convert the rotational trend of the thrust piece 300 into an upward trend, so that the thrust piece 300 can push and squeeze the seal 200, so that the seal 200 completes the sealing between the base pipe and the inner wall of the wellbore. The operation is convenient and there is no need to wait for the thermal sheet to heat up and open the seal 200.

[0060] The sleeve 120 is provided with a threaded member 121 , which forms a threaded portion and is ring-shaped.

[0061] Specifically, the threaded member 121 is fixedly sleeved on the outer wall of the base pipe. When the staff rotates the base pipe, the base pipe will drive the threaded member 121 to rotate, and the external thread of the threaded member 121 will drive the internal thread 301 of the thrust member 300, so that the thrust member 300 has a tendency to rotate. The thrust member 300 cannot rotate under the action of the friction part 302. Therefore, the thrust member 300 will move toward the sealing member 200 under the drive of the threaded member 121, and the thrust member 300 will cause pressure on the sealing member 200, so that the sealing member 200 is tightly abutted against the inner wall of the wellbore, completing the sealing between the base pipe and the inner wall of the wellbore.

[0062] It should be noted that when the base pipe rotates, the rotation direction of the base pipe makes the connection between the base pipe and other pipe columns in a tightened state, and the thrust piece 300 will not press the seal 200 due to the rotation of the base pipe to cause the reverse buckle phenomenon.

[0063] The friction part 302 arranged on the outer wall of the thrust piece 300 always keeps contact with the wellbore, that is, when the thrust piece 300 enters the wellbore along with the base pipe, the friction part 302 starts to contact with the wellbore.

[0064] Specifically, a limiting portion is provided on the outer wall of the base pipe. When the thrust piece 300 squeezes the seal 200, the seal 200 is limited by the limiting portion, so that the seal 200 cannot slide synchronously with the thrust piece 300. Therefore, the thrust piece 300 can squeeze the seal 200, so that the seal 200 bulges and abuts against the inner wall of the wellbore to complete the sealing.

[0065] See also Figure 1 As shown, in an optional scheme of this embodiment, the base pipe includes a central pipe 110 and a sleeve 120 with a sealing sleeve arranged outside the central pipe 110; the sleeve 120 is connected to the central pipe 110 through a first connecting member 122, and after the first connecting member 122 is cut off, the sleeve 120 can slide relative to the central pipe 110; the sealing member 200 and the thrust member 300 are both sleeved on the sleeve 120, and the threaded member 121 is arranged outside the sleeve 120.

[0066] Specifically, the sleeve 120 is sleeved outside the central tube 110, and the two are connected by a first connecting member 122. When the staff rotates the central tube 110, the sleeve 120 can be driven to rotate together, thereby driving the threaded member 121 fixed on the outer wall of the sleeve 120 to rotate.

[0067] Among them, a torque pin 127 that can transmit torque is provided on the sleeve 120. The torque pin 127 can abut against the center tube 110, so that when the center tube 110 rotates, it can drive the sleeve 120 to rotate, and reduce the impact on the first connecting member 122 during the rotation process, avoiding accidental shearing of the first connecting member 122.

[0068] It should be noted that an inner sealing ring 210 is disposed in the casing 120 , and the casing 120 is slidably sealed with the central tube 110 through the inner sealing ring 210 .

[0069] See also Figure 1 and Figure 4 As shown, in an optional solution of this embodiment, the thrust member 300 includes a connecting portion 310 and a thrust portion 320 ; the internal thread 301 is provided on the inner wall of the connecting portion 310 , one end of the thrust portion 320 is connected to the connecting portion 310 , and the other end abuts against the sealing member 200 .

[0070] Specifically, the internal thread 301 in the connecting portion 310 is connected to the external thread of the threaded member 121 . When the threaded member 121 rotates, it pushes the connecting portion 310 toward the sealing member 200 . The connecting portion 310 pushes the thrust portion 320 , so that the thrust portion 320 can apply pressure to the sealing member 200 .

[0071] See also Figure 1 , Figure 4 , Fig.10 and Fig.11 As shown, in an optional scheme of the present embodiment, the thrust member 300 further includes a cava 330 and a cava seat 340; the cava 330 is arranged in the cava seat 340 through a cava spring 360, and a first through hole 341 is provided on the cava seat 340; the cava 330 is located between the connecting portion 310 and the thrust portion 320, and under the push of the connecting portion 310 and the thrust portion 320, the cava 330 can protrude from the first through hole 341.

[0072] The slip seat 340 is located between the connecting part 310 and the thrust part 320. When the connecting part 310 is driven by the threaded member 121, the connecting part 310 will squeeze the slip 330 in the slip seat 340. The slip 330 will be squeezed and protrude from the first through hole 341. Moreover, as the connecting part 310 continues to move upward, the connecting part 310 can make the slip 330 abut against the thrust part 320. At this time, the connecting part 310 continues to move upward and exert pressure. Under the action of the connecting part 310 and the thrust part 320, the slip 330 will protrude from the first through hole 341 and abut against the inside of the wellbore. The mechanical anchoring thermal recovery compensation integrated device can be suspended by the slip 330 to prevent the mechanical anchoring thermal recovery compensation integrated device from sliding up and down at will.

[0073] Furthermore, during the protrusion of the slips 330 , the thrust portion 320 will also squeeze the seal 200 , so that the seal 200 completes the sealing work.

[0074] It should be pointed out that the slip seat 340 is hung on the thrust portion 320 , the slip seat 340 moves upward along with the thrust portion 320 , and the slip 330 can be pushed out during the upward movement of the slip seat 340 .

[0075] A plurality of slips 330 are disposed in the slip seat 340 , and the plurality of slips 330 are evenly distributed along the circumference of the slip seat 340 .

[0076] It should be pointed out that the cava 330 is U-shaped, a limiting plate is arranged in the middle of the first through hole 341, and a cava spring 360 is arranged between the recessed area of ​​the cava 330 and the limiting plate. The cava 330 overcomes the force of the cava spring 360 and protrudes out of the first through hole 341 under the action of the connecting part 310 and the thrust part 320. When the connecting part 310 and the thrust part 320 no longer act on the cava 330, the cava 330 can be retracted into the first through hole 341 under the action of the cava spring 360.

[0077] See also Figure 1 and Figure 4 As shown, in an optional solution of this embodiment, a wedge-shaped platform 350 for pushing the slip 330 is provided at one end of the connecting portion 310 and the thrust portion 320 facing the slip 330 .

[0078] Specifically, the wedge-shaped platform 350 can conveniently push the slip 330 so that the slip 330 can protrude from the first through hole 341. At the same time, through the arrangement of the wedge-shaped platform 350, the slip 330 can smoothly protrude from the first through hole 341 without being stuck.

[0079] See also Figure 1 and Fig.10 As shown, in an optional solution of this embodiment, the slip seat 340 is connected to the connecting part 310 through a second connecting member 342 that can transmit torque, and the friction part 302 is provided on the slip seat 340 .

[0080] Specifically, the friction part 302 is fixed on the slip seat 340 , so when the mechanical anchoring thermal recovery compensation integrated device enters the wellbore, the friction part 302 can limit the rotation of the slip seat 340 , and through the second connecting member 342 , the slip seat 340 can limit the rotation of the connecting part 310 .

[0081] The second connecting member 342 is fixedly arranged on the connecting portion 310, and a third through hole for installing the second connecting member 342 is provided on the slip seat 340, and the third through hole is a slot 343, and the length of the slot 343 extends along the axial direction of the slip seat 340. When the connecting member is driven upward by the screw member 121, the connecting portion 310 can drive the second connecting member 342 to move in the slot 343, so that the connecting portion 310 will not affect the movement of the slip seat 340.

[0082] See also Figure 3 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig. 9 As shown, in an optional solution of this embodiment, a mounting hole 123 is provided on the sleeve 120, and a stopper 124 for connecting with the threaded member 121 is provided in the mounting hole 123, so that the threaded member 121 cannot move along the axis of the base pipe; a first limit block for transmitting torque is provided on the stopper 124, and the first limit block can abut against the threaded member 121.

[0083] The threaded member 121 is fixedly mounted on the sleeve 120 via a stopper 124 . Specifically, the stopper 124 is mounted in the mounting hole 123 , and the threaded member 121 is clamped on the stopper 124 . The stopper 124 can limit the downward movement of the threaded member 121 .

[0084] In addition, a first limit block is provided on the stop member 124. When the stop member 124 is connected to the threaded member 121, the first limit block can limit the rotation of the threaded member 121. When the sleeve 120 rotates, the stop member 124 can drive the threaded member 121 to rotate.

[0085] The screw member 121 is provided with a second limit block 125 for transmitting torque, and the second limit block 125 can abut against the stop member 124 .

[0086] Among them, a second limit block 125 is provided on the threaded member 121. When the stop member 124 is connected to the threaded member 121, the second limit block 125 can limit the rotation of the threaded member 121. The second limit block 125 abuts against the stop member 124. When the sleeve 120 rotates, the stop member 124 can drive the threaded member 121 to rotate.

[0087] Specifically, after the threaded member 121 is set on the stop member 124, the threaded member 121 cannot move downward (away from the thrust portion 320). Therefore, when the stop member 124 works normally, the threaded member 121 will not release the support for the connecting portion 310, that is, the cava 330 can complete the normal suspension work and the seal 200 can complete the sealing work normally.

[0088] See also Figure 1 , Fig.12 , Fig.13 and Fig.14 As shown, in the optional scheme of this embodiment, the bottom of the inner part of the sleeve 120 is provided with a de-sealing sleeve 400, and the de-sealing sleeve 400 is connected to the sleeve 120 through a third connecting member 410; the mounting hole 123 is a second through hole, the top of the de-sealing sleeve 400 can block the second through hole, and the outer wall of the de-sealing sleeve 400 is provided with a groove 420 that can accommodate the stop member 124; after the third connecting member 410 is cut off, the groove 420 can correspond to the second through hole, and the threaded member 121 can push the stop member 124 into the groove 420, so that the threaded member 121 can slide relative to the stop member 124 along the axis of the base pipe; the outer wall of the central pipe 110 is provided with a limit member 111 that can abut against the de-sealing sleeve 400, and the limit member 111 is located below the de-sealing sleeve 400.

[0089] Specifically, when it is necessary to release the seat seal of the mechanical anchoring thermal recovery compensation integrated device, it is only necessary to lift the central tube 110, and the central tube 110 will drive the limiter 111 to move upward, and the limiter 111 will move up and abut against the unsealing sleeve 400, and as the central tube 110 continues to move upward, the limiter 111 will drive the unsealing sleeve 400 to move upward, and the unsealing sleeve 400 will move upward with the limiter 111 after cutting off the third connecting piece 410. A limit platform is provided in the sleeve 120. When the unsealing sleeve 400 abuts against the limit platform, the central tube 110 will drive the sleeve 120 to move upward, and the groove 420 on the unsealing sleeve 400 will correspond to the second through hole. When the central tube 110 drives the sleeve 120 to move upward, because the sealing member 200 and The cava 330 is in a fixed state, so the cava 330 and the seal 200 will give the threaded member 121 a downward force (opposite to the moving direction of the sleeve 120) under the action of friction. At this time, the threaded member 121 will abut against the stop member 124, and the threaded member 121 will press the stop member 124. At this time, a part of the stop member 124 will fall into the groove 420, so that the part of the stop member 124 protruding from the second through hole is pressed into the second through hole. After that, the stop member 124 no longer restricts the threaded member 121, and the threaded member 121 can move downward with the connecting part 310 to release the locking state of the cava 330 and the seal 200, and then the sleeve 120 can drive the thrust member 300 and the seal 200 to move upward together with the center pipe 110.

[0090] In an optional solution of this embodiment, an inclined surface 126 is provided on the stopper 124 , and the threaded member 121 can abut against the inclined surface 126 .

[0091] Specifically, when the threaded member 121 abuts against the stop member 124, the setting of the inclined surface 126 can cause the stop member 124 to be subjected to a downward force (away from the thrust portion 320) and an inward force (into the second through hole). Therefore, when the groove 420 of the unsealing sleeve 400 corresponds to the second through hole, under the action of the upward movement of the center tube 110, the threaded member 121 can press the stop member 124 into the second through hole.

[0092] It should be noted that the inclined surface 126 is provided on the portion of the stopper 124 protruding from the second through hole, so the contact surfaces of the screw member and the stopper 124 are both the inclined surface 126 , which can decompose the force components in two directions, thereby driving the stopper 124 .

[0093] An embodiment of the present invention provides a pipe string including a mechanical anchoring thermal recovery compensation integrated device.

[0094] Compared with the prior art, the pipe column has the above advantages, which will not be described in detail here.

[0095] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A mechanical anchoring thermal recovery and compensation integrated device, characterized in that: include: Base pipe; The slidable sleeve outside the base pipe is provided with a sealing member (200) and a thrust member (300); The outer wall of the base pipe is provided with a threaded portion, the threaded portion is an external thread, the inner wall of the thrust piece (300) is provided with an internal thread (301) adapted to the external thread, and the outer wall of the thrust piece (300) is provided with a friction portion (302) abutting against the inner wall of the wellbore; The outer wall of the base pipe is provided with a limiting portion, one end of the sealing member (200) abuts against the limiting portion, and the other end abuts against the thrust member (300); The base pipe comprises a central pipe (110) and a sleeve (120) which is sealed and sleeved outside the central pipe (110); the sleeve (120) is connected to the central pipe (110) via a first connecting piece (122); after the first connecting piece (122) is cut off, the sleeve (120) can slide relative to the central pipe (110); the sealing piece (200) and the thrust piece (300) are both sleeved on the sleeve (120), and the threaded portion is arranged outside the sleeve (120); The thrust member (300) comprises a connecting portion (310) and a thrust portion (320); the internal thread (301) is provided on the inner wall of the connecting portion (310); one end of the thrust portion (320) is connected to the connecting portion (310), and the other end is in contact with the sealing member (200); The sleeve (120) is provided with a threaded member (121), the threaded member (121) forming the threaded portion, the sleeve (120) is provided with a mounting hole (123), a stopper (124) for connecting with the threaded member (121) is provided in the mounting hole (123), so that the threaded member (121) cannot move along the axis of the base pipe; the stopper (124) is provided with a first limit block for transmitting torque, the first limit block can abut against the threaded member (121); or the threaded member (121) is provided with a second limit block (125) for transmitting torque, the second limit block (125) can abut against the stopper (124).

2. The mechanical anchoring thermal recovery and compensation integrated device according to claim 1 is characterized in that: The thrust member (300) further includes a slip (330) and a slip seat (340); The slip (330) is arranged in the slip seat (340) via a slip spring (360), and a first through hole (341) is provided on the slip seat (340); The slip (330) is located between the connecting portion (310) and the thrust portion (320), and under the push of the connecting portion (310) and the thrust portion (320), the slip (330) can protrude out of the first through hole (341).

3. The mechanical anchoring thermal recovery and compensation integrated device according to claim 2 is characterized in that: The connecting portion (310) and one end of the thrust portion (320) facing the slip (330) are both provided with a wedge-shaped platform (350) for pushing the slip (330).

4. The mechanical anchoring thermal recovery and compensation integrated device according to claim 2 is characterized in that: The slip seat (340) is connected to the connecting portion (310) via a second connecting member (342) capable of transmitting torque, and the friction portion (302) is disposed on the slip seat (340).

5. The mechanical anchoring thermal recovery and compensation integrated device according to claim 1 is characterized in that: The bottom of the sleeve (120) is sleeved with a decapsulation sleeve (400), and the decapsulation sleeve (400) is connected to the sleeve (120) via a third connecting member (410); The mounting hole (123) is a second through hole, the top of the decapsulation sleeve (400) can block the second through hole, and the outer wall of the decapsulation sleeve (400) is provided with a groove (420) capable of accommodating the stopper (124); After the third connecting member (410) is cut off, the groove (420) can correspond to the second through hole, and the threaded member (121) can push the stopper (124) into the groove (420), so that the threaded member (121) can slide relative to the stopper (124) along the axis of the base pipe; The outer wall of the central tube (110) is provided with a limiting member (111) capable of abutting against the desealing sleeve (400), and the limiting member (111) is located below the desealing sleeve (400).

6. The mechanical anchoring thermal recovery and compensation integrated device according to claim 5 is characterized in that: The stopper (124) is provided with an inclined surface (126), and the threaded member (121) can abut against the inclined surface (126).

7. A pipe column, characterized in that: It comprises the mechanical anchoring thermal recovery and compensation integrated device as described in any one of claims 1 to 6.

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