Novel integral drilling liner hanger of seat hanging device

Abstract

The invention relates to a novel integral drilling liner hanger of a seat hanging device, comprising an external device which comprises a taper sleeve body, a cone body groove, a slip cone body, a slip, a slip ascending groove, a body cone body and a tie-back cylinder; and the internal device is mounted on the external device and comprises a central pipe, a claw sleeve wedge block, a claw sleeve pushing sleeve, a claw sleeve, a retaining ring, a middle positioning sleeve, an upper positioning sleeve, a positioning clamp spring, a positioning ring, a spring, a sand prevention cap, a lifting pup joint, a first jackscrew, a second jackscrew, a third jackscrew and a fourth jackscrew. No pressure transmission hole is formed in the hanger part left in a well, and a hydraulic cylinder on a feeding tool drives a wedge-shaped block on a seat hanging sleeve to pull out a seat hanging slip to be tightly attached to the inner wall of an upper-layer casing pipe, so that the seat hanging slip is hung on the upper-layer casing pipe; the tie-back plug penetrates through the seat hanging mechanism to be inserted into the tie-back barrel of the hanger to achieve sealing, and the sealing performance of the whole tail pipe string after well cementation is guaranteed.

Description

Technical Field

[0001] The present invention relates to the field of downhole tools for cementing construction in underground energy exploration and development such as oil and natural gas, and particularly relates to the field of cementing liner hanging technology. More specifically, it relates to an integral liner hanger with a new type of setting device. Background Art

[0002] Cementing is an important and indispensable link in the drilling and completion operation process, which includes running casing and injecting cement. The casing is mainly used to support the wellbore during the drilling process and after completion to ensure the progress of the drilling process and the normal operation of the entire oil well after completion.

[0003] During the drilling and completion operation process, running casing is divided into full-hole casing running and liner cementing operation.

[0004] Liner cementing operation is a process technology that runs the liner into the well, sets it at a predetermined position below the upper casing string, and completes the liner cementing operation. The liner hanger is one of the casing accessories.

[0005] The main purposes of liner cementing are as follows: it can reduce the multi-layer overlap of casings, saving a large amount of casings; it can reduce the circulating pump pressure and is suitable for deep well drilling; it can use compound drill strings, reducing the load on the drilling rig and facilitating the drilling of deep wells and ultra-deep wells; the liner plus tie-back is divided into two cementing operations, which can increase the cement return height and reduce the cement weight loss; it can control the oil and gas channeling. First run the liner and then tie back the casing, and a section of unworn casing can be obtained; it simplifies the wellhead; it can reduce the construction pressure during water injection, ensuring the progress and safety of the construction; it ensures the straightness of the liner, improving the cementing sealing quality and being beneficial for future oil production and downhole operations.

[0006] Liner hangers are divided into two types according to the setting method: hydraulic slip liner hangers and mechanical slip liner hangers, and the hydraulic slip liner hanger is the most widely used. The hydraulic liner hanger is hydraulically set by applying pressure to the pipe string during running. It can suspend medium to heavy liner loads and is widely used in deep wells and highly deviated wells. By dropping a setting ball into the ball seat, the pressure difference pushes the hydraulic cylinder upward to move the slips to the setting position. The upper part of the conventional liner hanger is equipped with a tie-back collar. The hydraulic-driven slip mechanism is in the middle of the liner hanger. After the cement slurry solidifies at the end of the liner hanging and cementing operation, a tie-back pipe string can be run in and the casing can be tied back from the bell mouth of the tie-back collar to the wellhead, and the cementing operation can be completed. When performing the casing tie-back operation, a corresponding sealing insert joint needs to be installed at the lower part of the casing string to ensure the smooth progress of the cementing operation and the sealing performance of the casing string meets the technical requirements.

[0007] In gas wells and gas storage wells, the requirements for wellbore integrity are getting higher and higher. With the widespread use of gas-tight casings, the liner hanger is required to have the same sealing ability as the gas-tight casing.

[0008] Therefore, a novel integrated liner hanger for a setting and hanging device is needed. Summary of the Invention

[0009] The object of the present invention is to provide a novel integrated liner hanger for a setting and hanging device to solve the sealing requirements of the liner cementing for the tool.

[0010] To solve the above technical problems or achieve the above object, the present invention adopts the following specific technical solutions:

[0011] According to an aspect of the present invention, there is provided a novel integrated liner hanger for a setting and hanging device, comprising:

[0012] An external device, which includes:

[0013] A cone sleeve body, on which a conical groove is provided, and a slip cone is connected to the cone sleeve body,

[0014] The lower part of the cone sleeve body is connected to a tie-back cylinder;

[0015] A slip, which is installed on the cone sleeve body along the conical groove and the slip is connected to the slip cone, and a slip upward groove is provided below the slip;

[0016] A body cone, which is located above the slip and is connected to the slip cone in a mating manner;

[0017] An internal device, which is installed on the external device, and the internal device includes:

[0018] A central pipe, which extends downward along the cone sleeve body, and a first limit step, a second limit step, a liquid inlet hole and a positioning groove are provided on the central pipe from bottom to top;

[0019] A claw sleeve wedge block, the lower end of which is connected to the slip upward groove in a mating manner, and the claw sleeve wedge block is movably located at the first limit step;

[0020] A claw sleeve push sleeve, which is movably sleeved on the central pipe, the claw sleeve push sleeve is adjacent to the second limit step and one side of the claw sleeve push sleeve faces the liquid inlet hole;

[0021] A claw sleeve, which is located above the claw sleeve push sleeve, the claw sleeve is movably sleeved on the central pipe and a backstop ring is installed between the claw sleeve and the central pipe, and the backstop ring enters the positioning groove when moving upward, and the lower end of the claw sleeve is connected to the upper end of the claw sleeve wedge block;

[0022] A middle positioning sleeve, which is movably sleeved on the central pipe, and the lower end of the middle positioning sleeve is connected to the upper end of the claw sleeve;

[0023] An upper positioning sleeve, which is movably sleeved on the central pipe and the lower end of the upper positioning sleeve is connected to the upper end of the middle positioning sleeve;

[0024] A positioning circlip and a positioning ring, which are connected to a central tube located above the upper positioning sleeve;

[0025] A spring, which is located above the positioning circlip and the positioning ring and is installed on the central tube;

[0026] A sand control cap, which is sleeved on the central tube and seated on the positioning ring;

[0027] A lifting nipple, which passes through the sand control cap and is connected to the upper end of the central tube.

[0028] In an embodiment of the present invention, the number of slip cones is at least three, and each slip cone is arranged at equal intervals.

[0029] In an embodiment of the present invention, the slip sleeve wedge block is integrally formed with the slip sleeve.

[0030] In an embodiment of the present invention, when the slip sleeve wedge block moves upward, it drives the slips to move upward along the body cone and the cone groove through the slip upward groove so that the slips open.

[0031] In an embodiment of the present invention, the slip sleeve push sleeve is fixed at a predetermined position of the central tube by a pin.

[0032] In an embodiment of the present invention, the sand control cap is provided with a rotary buckle, and the lifting nipple passes through the rotary buckle and is threadedly connected to the central tube.

[0033] In an embodiment of the present invention, the sand control cap is positioned by a first set screw, and the sand control cap is connected to the positioning ring by a second set screw.

[0034] In an embodiment of the present invention, the upper positioning sleeve and the middle positioning sleeve are connected by a third set screw.

[0035] In an embodiment of the present invention, the middle positioning sleeve and the slip sleeve are connected by a fourth set screw.

[0036] In an embodiment of the present invention, the slip sleeve push sleeve is internally pressured with the central tube through the lifting nipple to push through the liquid inlet hole.

[0037] In an embodiment of the present invention, when the slip sleeve push sleeve is pushed, it shears the pin, and then pushes the slip sleeve, the middle positioning sleeve and the upper positioning sleeve to move upward and drives the anti-backlash ring to move upward, and stops moving upward after the anti-backlash ring enters the positioning groove.

[0038] In an embodiment of the present invention, the slip sleeve wedge block moves upward and leaves the first limiting step on the central tube and retracts to the first limiting step when the slips open.

[0039] In an embodiment of the present invention, during the tie-back operation, the tie-back plug is passed through the tapered sleeve body and into the tie-back cylinder of the liner hanger to achieve the tie-back cementing operation.

[0040] By adopting the above technical solutions, the present invention has the following advantages compared with the prior art:

[0041] For the integral liner hanger of a new type of setting and hanging device provided by the present invention, the setting and hanging driving mechanism is located on the running tool, and there are no pressure transmission holes on the part of the hanger left in the well. The setting and hanging is achieved by the hydraulic cylinder on the running tool driving the wedge block on the setting and hanging sleeve to pull out the setting and hanging slips and press them tightly against the inner wall of the upper casing.

[0042] After the cementing operation of the present invention is completed, through secondary tie-back, the tie-back plug is passed through the setting and hanging mechanism and inserted into the tie-back cylinder of the hanger to achieve sealing, ensuring the sealing performance of the entire liner string after cementing, and is particularly suitable for high-pressure liner cementing operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other embodiments can be obtained based on these drawings.

[0044] Figure 1 Shows the structural schematic diagram of an integral liner hanger of a new type of setting and hanging device provided by the present invention;

[0045] Figure 2 Shows Figure 1 the structural schematic diagram of the external device in;

[0046] Figure 3 Shows Figure 1 the structural schematic diagram of the internal device in;

[0047] Figure 4 Shows Figure 1 the structural schematic diagram when the internal device is working in.

[0048] LIST OF REFERENCE NUMERALS

[0049] 1 Lift short circuit, 2 Sand control cap, 3 First set screw, 4 Spring, 5 Second set screw, 6 Positioning ring, 7 Positioning circlip, 8 Upper positioning sleeve, 9 Third set screw, 10 Middle positioning sleeve, 11 Positioning groove, 12 Fourth set screw, 13 Claw sleeve, 14 Anti-back-off ring, 15 Pin, 16 Claw sleeve push sleeve, 17 Liquid inlet hole, 18 Claw sleeve wedge block, 19 Central tube, 20 Rotating buckle, 21 First limiting step, 22 Second limiting step, 201 Body cone, 202 Slip, 203 Slip cone, 204 Slip upward groove, 205 Cone sleeve body, 206 Cone groove, 301 Tie-back cylinder Detailed implementation mode

[0050] It should be understood that the embodiments of the present invention shown in the exemplary embodiments are merely illustrative. Although only a few embodiments of the present invention are described in detail, those skilled in the art can easily appreciate that various modifications are feasible without substantially departing from the teachings of the subject matter of the present invention. Accordingly, all such modifications should be included within the scope of the present invention. Without departing from the gist of the present invention, other substitutions, modifications, changes and deletions can be made to the design, operating conditions and parameters, etc. of the following exemplary embodiments.

[0051] As Figures 1-4 shown, a novel setting and hanging device integral liner hanger provided by the present invention includes two parts: an external device and an internal device. Among them, as Figure 2 shown, the external device includes: a cone sleeve body 205, on which a cone groove 206 is provided, three equally spaced slip cones 203 are connected to the cone sleeve body 205, and a tie-back cylinder 301 is connected to the lower part of the cone sleeve body 205; a slip 202, which is installed on the cone sleeve body 205 along the cone groove 206 and the slip 202 is connected to the slip cone 203, and a slip upward groove 204 is provided below the slip 202; a body cone 201, which is located above the slip 202 and is connected to the slip cone 203 in a matching manner. As Figure 3As shown, the internal device is installed on the external device. The internal device includes: a central tube 19 that extends downward along the tapered sleeve body 205. A first limiting step 21, a second limiting step 22, a liquid inlet hole 17, and a positioning groove 11 are arranged on the central tube 19 from bottom to top; a claw sleeve wedge block 18, the lower end of the claw sleeve wedge block 18 is cooperatively connected with the slip upward groove 204, and the claw sleeve wedge block 18 is movably located at the first limiting step 21; a claw sleeve push sleeve 16, the claw sleeve push sleeve 16 is movably sleeved on the central tube 19, the claw sleeve push sleeve 16 is adjacent to the second limiting step 22 and one side of the claw sleeve push sleeve 16 faces the liquid inlet hole 17; a claw sleeve 13, the claw sleeve 13 is located above the claw sleeve push sleeve 16, the claw sleeve 13 is movably sleeved on the central tube 19 and a backstop ring 14 is installed between the claw sleeve 13 and the central tube 19. When moving upward, the backstop ring 14 enters the positioning groove 11, and the lower end of the claw sleeve 13 is connected to the upper end of the claw sleeve wedge block 18; a middle positioning sleeve 10, the middle positioning sleeve 10 is movably sleeved on the central tube 19, and the lower end of the middle positioning sleeve 10 is connected to the upper end of the claw sleeve 13; an upper positioning sleeve 8, the upper positioning sleeve 8 is movably sleeved on the central tube 19 and the lower end of the upper positioning sleeve 8 is connected to the upper end of the middle positioning sleeve 10; a positioning snap spring 7 and a positioning ring 6, the positioning snap spring 7 and the positioning ring 6 are connected to the central tube 19 above the upper positioning sleeve 8; a spring 4, the spring 4 is located above the positioning snap spring 7 and the positioning ring 6 and is installed on the central tube 19; a sand control cap 2, the sand control cap 2 is sleeved on the central tube 19 and is seated on the positioning ring 6; a lifting nipple 1, the lifting nipple 1 passes through the sand control cap 2 and is connected to the upper end of the central tube 19.

[0052] For the integral liner hanger of the novel setting and hanging device provided by the present invention, the setting and hanging driving mechanism is located on the running tool. There are no pressure transmission holes on the hanger part left in the well. The setting and hanging is realized by driving the wedge block on the setting and hanging sleeve by the liquid cylinder on the running tool to pull out the setting and hanging slips and tightly attach them to the inner wall of the upper casing. After cementing, the present invention realizes sealing by performing secondary tie-back, inserting the tie-back plug through the setting and hanging mechanism into the tie-back cylinder of the hanger, ensuring the sealing performance of the entire liner string after cementing, and is particularly suitable for high-pressure liner cementing operations.

[0053] In the integral liner hanger of the above novel setting and hanging device, the number of slip cones 203 is at least three, as Figure 2 shown, preferably three, and each slip cone 203 is arranged at equal intervals.

[0054] In the integral liner hanger of the above novel setting and hanging device, as Figure 1 shown, the claw sleeve wedge block 18 and the claw sleeve 13 are integrally formed.

[0055] In the integral liner hanger of the above novel setting and hanging device, as Figure 1 and4 As shown, when the claw sleeve wedge block 18 moves upward, it drives the slips 202 to move upward along the body cone 201 and the cone groove 206 through the slips upward groove 204, so that the slips 202 open.

[0056] In the above-mentioned integral liner hanger of the new setting device, as Figure 1 and 3 shown, the claw sleeve push sleeve 16 is fixed at a predetermined position of the central tube 19 through the pin 15.

[0057] In the above-mentioned integral liner hanger of the new setting device, as Figure 1 shown, the sand control cap 2 is provided with a rotary buckle 20, and the lifting nipple 1 passes through the rotary buckle 20 and is threadedly connected to the central tube 19.

[0058] In the above-mentioned integral liner hanger of the new setting device, as Figure 1 shown, the sand control cap 2 is positioned by the first set screw 3, and the sand control cap 2 is connected to the positioning ring 6 through the second set screw 5.

[0059] In the above-mentioned integral liner hanger of the new setting device, as Figure 1 shown, the upper positioning sleeve 8 is connected to the middle positioning sleeve 10 through the third set screw 9.

[0060] In the above-mentioned integral liner hanger of the new setting device, as Figure 1 shown, the middle positioning sleeve 10 is connected to the claw sleeve 13 through the fourth set screw 12.

[0061] In the above-mentioned integral liner hanger of the new setting device, as Figure 1 shown, the claw sleeve push sleeve 16 is internally pressured through the lifting nipple 1 and the central tube 19 to push through the liquid inlet hole 17.

[0062] In the above-mentioned integral liner hanger of the new setting device, as Figure 4 shown, as the claw sleeve push sleeve 16 is pushed, it shears the pin 15, and then pushes the claw sleeve 13, the middle positioning sleeve 10 and the upper positioning sleeve 8 to move upward and drives the anti-backlash ring 14 to move upward, and stops moving upward after the anti-backlash ring 14 enters the positioning groove 11.

[0063] In the above-mentioned integral liner hanger of the new setting device, as Figure 4 shown, the claw sleeve wedge block 18 moves upward and leaves the first limit step 21 on the central tube 19 and retracts to the first limit step 21 when the slips 202 open.

[0064] In the above-mentioned integral liner hanger of the new setting device, when the liner hanger performs the tie-back operation, the tie-back plug (not shown) passes through the cone sleeve body 205 and enters the tie-back cylinder 301 to realize the tie-back cementing operation.

[0065] The structure of the downhole logging tool of the present invention will be described in detail below through specific embodiments.

[0066] As Figures 1-4 shown, a new type of integral liner hanger with a setting device includes an external device and an internal device installed on the external device.

[0067] As Figure 2 shown, the external device of a new type of integral liner hanger with a setting device is shown. The external device includes a tapered sleeve body 205, a tapered body groove 206, a slip tapered body 203, slips 202, a slip upward groove 204, a body tapered body 201, and a tieback cylinder 301. The slips 202 are installed on the tapered sleeve body 205 along the tapered body groove 206. Three slip tapered bodies 203 are provided below the body tapered body 201. The slip upward groove 204 cooperates with the claw sleeve wedge block 18 in the internal device as Figure 3 shown. When the claw sleeve wedge block 18 moves upward, it drives the slips 202 to move upward along the body tapered body 201 and the tapered body groove 206 to realize the opening or extension of the slips 202. The tieback cylinder 301 is connected to the lower part of the tapered sleeve body 205.

[0068] As Figure 3 shown, the internal device of a new type of integral liner hanger with a setting device is shown. The internal device includes a central tube 19, a claw sleeve wedge block 18, a claw sleeve push sleeve 16, a claw sleeve 13, a backstop ring 14, a middle positioning sleeve 10, an upper positioning sleeve 8, a positioning circlip 7, a positioning ring 6, a spring 4, a sand control cap 2, a lifting nipple, and first, second, third, and fourth set screws 3, 5, 9, and 12. The central tube 19 extends downward along the tapered sleeve body 205. A first limiting step 21, a second limiting step 22, a liquid inlet hole 17, and a positioning groove 11 are provided on the central tube 19 from bottom to top. The claw sleeve wedge block 18 is movably located at the first limiting step 21. The claw sleeve push sleeve 16 is adjacent to the second limiting step 22 and one side of the claw sleeve push sleeve 16 faces the liquid inlet hole 17. The claw sleeve push sleeve 16 is sleeved on the central tube 19 and fixed at a predetermined position on the central tube 19 through a pin 15. The claw sleeve 13 is located above the claw sleeve push sleeve 16 and the claw sleeve 13 is sleeved on the central tube 19. Then the backstop ring 14 is sequentially installed, and then the middle positioning sleeve 10 is installed. The claw sleeve 13 and the middle positioning sleeve 10 are connected through the fourth set screw 12. Then the upper positioning sleeve 8 is installed. The upper positioning sleeve 8 and the middle positioning sleeve 10 are connected through the third set screw 9. Then the positioning circlip 7 and the positioning ring 6 are installed. After the spring 4 is installed again, the sand control cap 2 is sleeved on the central tube 19 and seated on the positioning ring 6. The lifting nipple 1 is passed through the rotary buckle 20 of the sand control cap 2 and connected to the central tube 19 through a thread. After the connection is completed, the sand control cap 2 and the positioning ring 6 are connected through the second set screw 5. Finally, the sand control cap 2 is positioned through the first set screw 3.

[0069] As shown Figure 4 When the integral liner hanger of the above-mentioned new type of setting and hanging device works, by applying pressure inside the lifting nipple 1 and the central pipe 19, the liquid enters through the liquid inlet hole 17 to push the claw sleeve push sleeve 16, shearing the pin 15. At the same time, it pushes the claw sleeve 13, the middle positioning sleeve 10 and the upper positioning sleeve 8 to move upward and drives the backstop ring 14 to move upward. When the backstop ring 14 enters the positioning groove 11, it stops moving upward.

[0070] At the same time, as shown Figure 4 When the claw sleeve wedge block 18 drives the slip 202 to move upward through the slip upward groove 204, the slip cone 203 moves along the body cone 201, and the slips 202 expand or open.

[0071] After the claw sleeve wedge block 18 moves upward a certain distance, it leaves the first limit step 21 on the central pipe 19. The claw sleeve wedge block 18 retracts while the slips 202 open, which serves to recover the internal device.

[0072] In addition, when the integral liner hanger of the above-mentioned new type of setting and hanging device in the embodiment of the present invention performs the tie-back operation, the tie-back plug passes through the cone sleeve body 205 and enters the tie-back cylinder 301 to realize the tie-back cementing operation.

[0073] Therefore, there are no pressure transmission holes on the hanger part left in the well in the present invention. The setting is realized by driving the wedge block on the setting sleeve by the liquid cylinder on the running tool to pull out the setting slips and press them tightly against the inner wall of the upper casing. At the same time, after the cementing is completed in the present invention, the tie-back plug can be inserted into the tie-back cylinder of the hanger through the setting mechanism for sealing through secondary tie-back, ensuring the sealing performance of the entire liner string after cementing, and is particularly suitable for high-pressure liner cementing operations.

[0074] The above are only the preferred embodiments of the present invention and are not used to limit the scope of implementation of the present invention; any modification or equivalent replacement of the present invention without departing from the spirit and scope of the present invention shall be covered by the protection scope of the claims of the present invention.

Claims

1. An integral liner hanger of a new type of seat-hanging device, characterized in that, it includes: An external device, and the external device includes: A tapered sleeve body, on which a vertebral body groove is provided, a slip vertebral body is connected to the tapered sleeve body, and a tie-back cylinder is connected to the lower part of the tapered sleeve body; Slips, the slips are installed on the tapered sleeve body along the vertebral body groove and the slips are connected to the slip vertebral body, and a slip upward groove is provided below the slips; A body vertebral body, which is located above the slips and is connected to the slip vertebral body in a matching manner; An internal device, the internal device is installed on the external device, and the internal device includes: A central tube, the central tube extends downward along the tapered sleeve body, and a first limit step, a second limit step, a liquid inlet hole and a positioning groove are provided on the central tube from bottom to top; A claw sleeve wedge block, the lower end of the claw sleeve wedge block is connected to the slip upward groove in a matching manner, and the claw sleeve wedge block is movably located at the first limit step; A claw sleeve push sleeve, the claw sleeve push sleeve is movably sleeved on the central tube, the claw sleeve push sleeve is adjacent to the second limit step and one side of the claw sleeve push sleeve faces the liquid inlet hole; A claw sleeve, the claw sleeve is located above the claw sleeve push sleeve, the claw sleeve is movably sleeved on the central tube and a back-off prevention ring is installed between the claw sleeve and the central tube, and the back-off prevention ring enters the positioning groove when moving upward, and the lower end of the claw sleeve is connected to the upper end of the claw sleeve wedge block; A middle positioning sleeve, the middle positioning sleeve is movably sleeved on the central tube, and the lower end of the middle positioning sleeve is connected to the upper end of the claw sleeve; An upper positioning sleeve, the upper positioning sleeve is movably sleeved on the central tube and the lower end of the upper positioning sleeve is connected to the upper end of the middle positioning sleeve; A positioning circlip and a positioning ring, which are connected to the central tube above the upper positioning sleeve; A spring, the spring is located above the positioning circlip and the positioning ring and is installed on the central tube; A sand control cap, the sand control cap is sleeved on the central tube and is seated on the positioning ring; A lifting nipple, the lifting nipple passes through the sand control cap and is connected to the upper end of the central tube.

2. The integral liner hanger of the new type of seat-hanging device according to claim 1, characterized in that, the number of the slip vertebral bodies is at least three, and each of the slip vertebral bodies is arranged at equal intervals.

3. The integral liner hanger of the new type of seat-hanging device according to claim 1, characterized in that, the claw sleeve wedge block and the claw sleeve are integrally formed.

4. The integral liner hanger of the new type of seat-hanging device according to claim 1, characterized in that, when the claw sleeve wedge block moves upward, it drives the slips to move upward along the body vertebral body and the vertebral body groove through the slip upward groove so that the slips open.

5. The integral liner hanger of the new type of seat-hanging device according to claim 1, characterized in that, the claw sleeve push sleeve is fixed at a predetermined position of the central tube by a pin.

6. The integral liner hanger of the new type of seat-hanging device according to claim 1, characterized in that, The sand control cap is provided with a rotary buckle, and the lifting nipple passes through the rotary buckle and is threadedly connected to the central pipe.

7. The integral liner hanger of the new setting and hanging device according to claim 6, characterized in that, the sand control cap is positioned by a first set screw, and the sand control cap is connected to the positioning ring by a second set screw.

8. The integral liner hanger of the new setting and hanging device according to claim 7, characterized in that, the upper positioning sleeve is connected to the middle positioning sleeve by a third set screw.

9. The integral liner hanger of the new setting and hanging device according to claim 8, characterized in that, the middle positioning sleeve is connected to the claw sleeve by a fourth set screw.

10. The integral liner hanger of the new setting and hanging device according to claim 5, characterized in that, the claw sleeve push sleeve is internally pressured through the lifting nipple and the central pipe to push liquid in through the liquid inlet hole.

11. The integral liner hanger of the new setting and hanging device according to claim 10, characterized in that, as the claw sleeve push sleeve is pushed, the pin is sheared, and then the claw sleeve, the middle positioning sleeve and the upper positioning sleeve are pushed upward, and the anti-backlash ring is driven upward, and stops moving upward after the anti-backlash ring enters the positioning groove.

12. The integral liner hanger of the new setting and hanging device according to claim 1, characterized in that, as the claw sleeve wedge block moves upward, it leaves the first limiting step on the central pipe and retracts to the first limiting step when the slips open.

13. The integral liner hanger of the new setting and hanging device according to claim 1, characterized in that, when the liner hanger performs the tie-back operation, the tie-back plug passes through the tapered sleeve body and enters the tie-back cylinder to achieve the tie-back cementing operation.

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