Hydraulic control pipeline setting small-outer-diameter cable passing packer

Abstract

The utility model discloses a small-outer-diameter cable passing packer for hydraulic control pipeline setting. The small-outer-diameter cable passing packer comprises a body, a rubber sleeve assembly, a connecting sleeve, a piston assembly, a sliding sleeve, a locking ring assembly, a slip assembly, a deblocking control sleeve and a sealing checking sleeve, a large through hole, a small through hole and a pressure transmitting hole are formed in the body along the axis, the main oil pipe is arranged in the large through hole of the body, and the pressure transmitting hole is communicated with a sealed cavity defined by the bottom face of the locking piston, the top face of the sliding sleeve, the inner wall of the piston sleeve and the outer wall of the body. The device is simple in structure and convenient to process; a hydraulic pipeline is used for setting, so that the operation time is shortened, and later replacement of a tubular column is facilitated for unsetting; the universality is high, and the adaptability is wide.

Description

Technical Field

[0001] The utility model belongs to the technical field of oil and gas well completion, and in particular relates to a small outer diameter cable packer for setting a hydraulically controlled pipeline. Background Art

[0002] The small outer diameter cable packer is connected to the downhole pipe string. It is a downhole tool used to isolate the annular space between the oil pipe and the oil and gas well casing. It is crucial in the completion process. Under the trend of intelligent completion methods, under the conditions of improving the timeliness of operations, saving costs, and strong operability, a small outer diameter cable packer with a hydraulically controlled pipeline setting method is proposed.

[0003] At present, the existing setting method of small outer diameter cable packer is hydraulic setting, which is to put the plug into the working cylinder below it, and pressurize the oil pipe to achieve setting. After the small outer diameter cable packer is set, the plug needs to be removed by wire operation. The wire operation process uses a lot of equipment, takes a long time, and is expensive. Utility Model Content

[0004] The utility model is proposed to overcome the shortcomings of the prior art and aims to provide a small outer diameter cable packer for setting and sealing a hydraulically controlled pipeline.

[0005] The utility model is realized by the following technical solutions:

[0006] A hydraulically controlled pipeline setting and sealing small outer diameter cable packer, comprising a main body and a rubber cylinder assembly, a connecting sleeve, a piston assembly, a sliding sleeve, a locking ring assembly, a slip assembly, a sealing control sleeve and a sealing inspection sleeve which are sequentially sleeved on the outside of the main body from top to bottom;

[0007] The main body is formed with a large through hole, a small through hole and a pressure transmission hole arranged along the axis, and the pressure transmission hole is connected to the sealing cavity through a hole channel;

[0008] The main oil pipe is arranged in the large through hole of the main body, and the two free ends of the main oil pipe are respectively provided with a variable buckle coupling and a variable buckle joint, and an oil pipe limiting sleeve and an unsealing screw sleeve are respectively arranged between the main oil pipe and the two ends of the large through hole;

[0009] The rubber cylinder assembly includes a rubber cylinder group and rubber cylinder stop sleeves and rubber cylinder pressure rings arranged at the upper and lower ends of the rubber cylinder group. The rubber cylinder group includes two side rubber cylinders and a middle rubber cylinder arranged between the two side rubber cylinders. A rubber cylinder spacer ring is arranged between any side rubber cylinder and the middle rubber cylinder.

[0010] The piston assembly includes an upward piston and a locking piston, and a piston sleeve sleeved outside the upward piston and the locking piston;

[0011] The lock ring assembly comprises an upper lock ring and a lower lock ring pressing sleeve, the upper lock ring is arranged between the upward piston and the piston sleeve, and a limit key is arranged on the inner side of the upper lock ring; a lower lock ring is arranged on the inner side of the upper end of the lower lock ring pressing sleeve, and a lower lock ring spring is arranged above the lower lock ring;

[0012] The slip assembly comprises an outer slip and a lower cone sleeve of a slip frame which are sequentially arranged from top to bottom, and a slip frame which is sleeved outside the outer slip and the lower cone sleeve of the slip frame, a hole is arranged on the inner wall of the middle part of the slip frame, and an outer slip spring is arranged in the hole;

[0013] The lower cone sleeve of the slip frame and the unsealing control sleeve are threadedly connected and fastened with a set screw. The specific assembly structure is as follows: the outer wall of the bottom end of the lower cone sleeve of the slip frame forms an annular groove, and the inner wall of the groove forms a thread; the inner wall of the top end of the unsealing control sleeve forms an annular groove, and the inner wall of the groove forms a thread. The groove of the lower cone sleeve of the slip frame is threadedly matched with the groove of the unsealing control sleeve;

[0014] The unsealing control sleeve and the sealing inspection sleeve are threadedly connected.

[0015] In the above technical solution, the sealing cavity is formed by surrounding the bottom surface of the locking piston, the top surface of the sliding sleeve, the inner wall of the piston sleeve and the outer wall of the body.

[0016] In the above technical solution, a sealing plug is provided at the port of the pressure transmission hole.

[0017] In the above technical solution, an annular groove is formed on the outer wall of the lower end of the main oil pipe, and a sealing ring is arranged between the outer wall of the main oil pipe below the groove and the wall of the large through hole of the body.

[0018] In the above technical solution, the rubber cylinder stop sleeve is connected to the body through threads, and an anti-rotation pin is arranged between the two, and the rubber cylinder pressure ring and the body are fixed by a sealing pin.

[0019] In the above technical solution, the upper end of the upward piston is buckled with the lower end of the connecting sleeve; the locking piston is arranged below the upward piston and is spaced apart from the upward piston, and sealing rings are arranged on the inner and outer walls of the locking piston.

[0020] In the above technical solution, the inner and outer sides of the upper locking ring, the inner wall of the piston sleeve in contact with the upper locking ring, and the outer wall of the upward piston all form serrated threads; the outer wall of the body corresponding to the lower locking ring pressing sleeve and the inner wall of the lower locking ring all form serrated threads.

[0021] In the above technical scheme, the top of the cava frame is sleeved on the outside of the lower locking ring sleeve, and a convex ring is formed on the inner wall of the top end of the cava frame, and a convex ring is formed on the outer wall of the bottom end of the lower locking ring sleeve. The convex rings of the cava frame and the lower locking ring sleeve are buckled, and the cava frame and the lower locking ring sleeve are fixed by sealing pins; the lower cone sleeve of the cava frame and the cava frame are fixed by limiting pins of the cava frame.

[0022] In the above technical solution, a hole groove is formed at the position corresponding to the main body and the unsealing control sleeve, a movable lug is arranged in the hole groove, a compression spring is arranged between the movable lug and the bottom of the hole groove, and a groove is formed at the position corresponding to the unsealing control sleeve and the movable lug, and the groove fits with the outer side of the movable lug.

[0023] In the above technical solution, a sealing ring is arranged between the inner wall of the inspection sleeve and the outer wall of the body.

[0024] The beneficial effects of the utility model are:

[0025] The utility model provides a hydraulically controlled pipeline setting small outer diameter cable packer, which has a simple structure and is easy to process; the use of hydraulic pipeline setting reduces the operation time and facilitates the later replacement of the pipe string for unsealing; it has strong versatility and wide adaptability. The utility model has the advantages of improving timeliness, strong operability, high performance reliability, cost saving, etc., and can provide technical support for the company's subsequent conventional completion pipe string. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is the front view of the utility model;

[0027] Figure 2 It is a front cross-sectional view of the utility model;

[0028] Figure 3 yes Figure 2 A schematic diagram of the enlarged structure of the U part;

[0029] Figure 4 yes Figure 2 A schematic diagram of the enlarged structure of the middle V part;

[0030] Figure 5 yes Figure 2 A schematic diagram of the enlarged structure of the middle W part;

[0031] Figure 6 yes Figure 2 Middle KK section view;

[0032] Figure 7 yes Figure 2 Middle RR section view;

[0033] Figure 8 yes Figure 2 Middle LL section view;

[0034] Fig. 9 yes Figure 2 Middle NN section view;

[0035] Fig.10 yes Figure 2 Middle MM section view;

[0036] Fig.11 yes Figure 2 Middle PP section view;

[0037] Fig.12 It is a top view of the utility model;

[0038] Fig.13 yes Fig.12 Middle JJ section view;

[0039] Fig.14 yes Fig.12 Middle HH section view;

[0040] Fig.15 yes Fig.14 Schematic diagram of the enlarged structure of the X part.

[0041] in:

[0042] 1. Main oil pipe; 2. Main body; 3. Rubber cylinder stop sleeve; 4. Anti-rotation screw; 5. Rubber cylinder pressure ring; 6. Connecting sleeve; 7. Upper locking ring; 8. Piston sleeve; 9. Upward piston; 10. No. Ⅰ sealing ring; 11. No. Ⅱ sealing ring; 12. Sliding sleeve; 13. Lower locking ring; 14. Lower locking ring pressure sleeve; 15. No. Ⅲ setting pin; 16. Slip frame; 17. External slip; 18. External slip spring; 19. Slip frame lower cone sleeve; 20. Set screw; 21. Unsealing control sleeve; 22. Sealing inspection sleeve; 23. Unsealing screw sleeve; 24. Variable buckle joint; 25. Unsealing screw; 26. Movable cam Ear; 27, compression spring; 28, No. Ⅰ screw; 29, cava frame limit pin; 30, No. Ⅲ ring seal; 31, lower lock ring spring; 32, lock block; 33, limit ring; 34, locking piston; 35, side rubber cylinder; 36, rubber cylinder spacer; 37, middle rubber cylinder; 38, oil pipe limit sleeve; 39, variable buckle coupling; 40, No. Ⅱ sealing pin; 41, torque screw; 42, limit key; 43, No. Ⅱ screw; 44, No. Ⅰ sealing plug; 45, No. Ⅰ sealing pin; 47, channel; 48, pressure transmission hole; 49, sealing cavity; 50, test seal; 51, pressure test hole.

[0043] For ordinary technicians in this field, other relevant drawings can be obtained based on the above drawings without any creative work. DETAILED DESCRIPTION

[0044] In order to enable those skilled in the art to better understand the technical solution of the present utility model, the technical solution of the present utility model will be further described below in conjunction with the accompanying drawings and through specific implementation methods.

[0045] like Figures 1 to 15As shown, a hydraulically controlled pipeline setting small outer diameter cable packer comprises a body 2 and a rubber sleeve assembly, a connecting sleeve 6, a piston assembly, a sliding sleeve 12, a locking ring assembly, a slip assembly, a release control sleeve 21 and a sealing inspection sleeve 22 which are sequentially sleeved on the outside of the body 2 from top to bottom;

[0046] The body 2 is formed with a large through hole, a small through hole and a pressure transmission hole 48 arranged along the axis, the pressure transmission hole 48 is communicated with a radially arranged hole 47, the hole 47 is communicated with a sealing cavity 49, and the sealing cavity 49 is formed by the bottom surface of the locking piston 34, the top surface of the sliding sleeve 12, the inner wall of the piston sleeve 8 and the outer wall of the body 2; a No. Ⅰ sealing plug 44 is arranged at the port of the pressure transmission hole 48;

[0047] The main oil pipe 1 is arranged in the large through hole of the body 2, and the two free ends of the main oil pipe 1 are respectively provided with a variable buckle collar 39 and a variable buckle joint 24, both of which are used to connect the oil pipe column; a pipe limit sleeve 38 and an unsealing screw sleeve 23 are respectively arranged between the main oil pipe 1 and the two ends of the large through hole, the pipe limit sleeve 38 is arranged at the upper end of the large through hole of the body 2 and is fixed by tightening, and the unsealing screw sleeve 23 is arranged at the lower end of the large through hole of the body 2 and is fixed to the body 2 by an unsealing screw 25; the lower section of the main oil pipe 1 is fixed to the body 2 by a torque screw 41, and the torque screw 41 is arranged at a position inside the sealing sleeve 22; an annular groove is formed on the outer wall of the lower end of the main oil pipe 1, and a No. III sealing ring 30 is arranged between the outer wall of the main oil pipe 1 below the groove and the wall of the large through hole of the body 2;

[0048] The rubber cylinder assembly includes a rubber cylinder group and a rubber cylinder stop sleeve 3 and a rubber cylinder pressure ring 5 arranged at the upper and lower ends of the rubber cylinder group. The rubber cylinder stop sleeve 3 is connected to the body 2 by a thread, and an anti-rotation pin 4 is arranged between the two. The rubber cylinder pressure ring 5 and the body 2 are fixed by a No. II sealing pin 40; the body 2 is provided with a limit step corresponding to the position of the rubber cylinder pressure ring 5 to prevent the rubber cylinder pressure ring 5 from moving downward; the rubber cylinder group includes two side rubber cylinders 35 and a middle rubber cylinder 37 arranged between the two side rubber cylinders 35, and a rubber cylinder spacer ring 36 is arranged between any side rubber cylinder 35 and the middle rubber cylinder 37;

[0049] The piston assembly includes an upward piston 9 and a locking piston 34, and a piston sleeve 8 sleeved on the outer sides of the upward piston 9 and the locking piston 34; the upper end of the upward piston 9 is buckled with the lower end of the connecting sleeve 6; the locking piston 34 is arranged below the upward piston 9 and is spaced apart from the upward piston 9, and the inner and outer walls of the locking piston 34 are respectively provided with a No. II sealing ring 11 and a No. I sealing ring 10 to ensure the sealing of the cavity;

[0050] The locking ring assembly comprises an upper locking ring 7 and a lower locking ring 13. The upper locking ring 7 is arranged between the upward piston 9 and the piston sleeve 8. A limit key 42 is arranged on the inner side of the upper locking ring 7. The limit key 42 and the upward piston 9 are fixed by a No. II screw 43. A U-shaped groove for accommodating the limit key 15 is formed at the position of the upward piston 9 corresponding to the limit key 42. The limit key 42 prevents the upper locking ring 7 from moving radially. The inner and outer sides of the upper locking ring 7, the inner wall of the piston sleeve 8 in contact with the upper locking ring 7, and the outer wall of the upward piston 9 are all formed with a serrated thread to realize a thrust stop function and lock the upper locking ring 7 with the upward piston 9 and the piston sleeve 8.

[0051] The lower locking ring 13 is arranged between the sliding sleeve 12 and the lower locking ring pressing sleeve 14, the upper end of the lower locking ring pressing sleeve 14 is inserted into the sliding sleeve 12, the inner wall of the upper end of the lower locking ring pressing sleeve 14 forms a groove, the lower locking ring 13 is placed in the groove, and a lower locking ring spring 31 is arranged above the lower locking ring 13, the lower locking ring spring 31 presses the lower locking ring 13, and pushes the lower locking ring 13 to move downward; the outer wall of the body 2 corresponding to the lower locking ring pressing sleeve 14 and the inner wall of the lower locking ring 13 are both formed with a serrated thread to realize the thrust function, and only allow the lower locking ring 13 to move downward along the body 2;

[0052] The upper end of the sliding sleeve 12 is inserted into the piston sleeve 8, and the sliding sleeve 12 is threadedly connected to the piston sleeve 8. The lower end of the sliding sleeve 12 is sleeved outside the lower lock ring compression sleeve 14. The inner and outer walls of the end of the sliding sleeve 12 inserted into the piston sleeve 8 are both provided with sealing rings to ensure the sealing of the cavity.

[0053] The sliding sleeve 12 and the locking piston 34 are connected by a No. Ⅰ setting pin 46; a limiting ring 33 is provided in the gap between the sliding sleeve 12 and the locking piston 34, and a placement groove is formed on the body 2 corresponding to the position of the limiting ring 33; a U-shaped groove is formed at the connecting end of the sliding sleeve and the locking piston 34, and a locking block 32 is provided in the U-shaped groove;

[0054] The slip assembly comprises an outer slip 17 and a lower conical sleeve 19 of the slip frame which are sequentially arranged from top to bottom, and a slip frame 16 which is sleeved outside the outer slip 17 and the lower conical sleeve 19 of the slip frame. A hole is arranged on the inner wall of the middle part of the slip frame 16, and an outer slip spring 18 is arranged in the hole. The outer slip spring 18 presses the outer slip 17 tightly.

[0055] The top of the slip frame 16 is sleeved on the outside of the lower lock ring pressing sleeve 14, and the inner wall of the top end of the slip frame 16 forms a convex ring, and the outer wall of the bottom end of the lower lock ring pressing sleeve 14 forms a convex ring. The convex rings of the slip frame 16 and the lower lock ring pressing sleeve 14 are buckled, and the slip frame 16 and the lower lock ring pressing sleeve 14 are fixed by a No. III sealing pin 15;

[0056] The slip frame lower cone sleeve 19 and the slip frame 16 are fixed by the slip frame limiting nails 29;

[0057] The lower cone sleeve 19 of the slip frame and the unsealing control sleeve 21 are threadedly connected and fastened with a set screw 20. The specific assembly structure is as follows: the outer wall of the bottom end of the lower cone sleeve 19 of the slip frame forms an annular groove, and the inner wall of the groove forms a thread; the inner wall of the top end of the unsealing control sleeve 21 forms an annular groove, and the inner wall of the groove forms a thread. The groove of the lower cone sleeve 19 of the slip frame is threadedly matched with the groove of the unsealing control sleeve 21;

[0058] The unsealing control sleeve 21 and the sealing inspection sleeve 22 are threadedly connected and fastened with a set screw 20. The specific assembly structure is as follows: an annular groove is formed on the outer wall of the bottom end of the unsealing control sleeve 21, and a thread is formed on the inner wall of the groove; an annular groove is formed on the inner wall of the top end of the sealing inspection sleeve 22, and a thread is formed on the inner wall of the groove. The groove of the unsealing control sleeve 21 is threadedly matched with the groove of the sealing inspection sleeve 22;

[0059] The unsealing control sleeve 21 is connected to the body 2 by a No. Ⅰ screw 28;

[0060] A plurality of test seal rings 50 are arranged between the test seal sleeve 22 and the body 2, and a radially arranged test pressure hole 51 is formed on the test seal sleeve 22;

[0061] The position of the main body 2 corresponding to the unsealing control sleeve 21 forms a hole groove, a movable lug 25 is arranged in the hole groove, a compression spring 27 is arranged between the movable lug 25 and the bottom of the hole groove, and the position of the unsealing control sleeve 21 corresponding to the movable lug 25 forms a groove, and the groove fits with the outer side of the movable lug 25;

[0062] A sealing ring is arranged between the inner wall of the inspection sleeve 22 and the outer wall of the body 2 .

[0063] The use of the utility model:

[0064] Before lowering, seal the hydraulic control pipeline with a small outer diameter through the cable packer and the ground pressure hydraulic mechanism, lower the hydraulic control pipeline with a small outer diameter through the cable packer to the designed position, pressurize the hydraulic control pipeline through the pressure hydraulic mechanism, and the hydraulic oil enters the sealing chamber through the pressure transmission hole on the main body. After reaching a certain pressure, the sealing pin connecting the locking piston and the sliding sleeve is sheared off, and the locking piston moves upward to contact the upward piston. Continuous pressure is applied to push the upward piston, the connecting sleeve, and the rubber cylinder pressure ring to move upward, cut off the sealing shear pins on the rubber cylinder pressure ring, squeeze the rubber cylinder sealing sleeve, and the upper locking ring, the upper and lower pistons, and the piston sleeve are provided with serrated threads with a thrust function to lock the upper locking ring with the upward piston and the piston sleeve.

[0065] At the same time, the sliding sleeve is pushed downward, and the sliding sleeve pushes the lower locking ring to cut off the sealing shear pins on the lower locking ring and the slip frame, and the external slip is squeezed out to bite the inner wall of the casing. The lower locking ring and the body are provided with a serrated thread, which has a thrust function and only allows the locking ring to move downward along the body. The inner slip spring pushes the lower locking ring to move downward, and continues to pressurize to the rated sealing pressure for a period of time, and then the hydraulic control line pressure is unloaded. Under the action of the upper locking ring and the lower locking ring, the small outer diameter cable packer is kept in the sealing state.

[0066] When unsealing, lift the tubing string, cut off the unsealing screw connected to the main body on the unsealing screw sleeve, and then lift the tubing for a certain distance. The movable lug falls on the groove of the main tubing, and the movable lug loses its limiting effect. The lower cone sleeve of the slip and the main body can move relatively. Continue to lift the tubing, and the outer slip, the middle rubber sleeve and the side rubber sleeve can be recovered and reset to complete the unsealing of the packer, and continue to lift the tubing string to recover the packer.

[0067] The utility model uses a hydraulic control line to pressurize the hydraulic mechanism, push the sliding sleeve downward to drive the locking ring to jump the teeth, the lower locking ring pressing sleeve is pushed out of the outer slip valve to bite the inner wall of the casing, and at the same time pushes the upward piston upward to compress the rubber cylinder to seal the casing, and the upper locking ring is locked with the upward piston to complete the sealing process.

[0068] The present invention has the advantages of improved timeliness, strong operability, high performance reliability, cost savings, etc., and can provide technical support for the company's subsequent conventional completion strings.

[0069] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0070] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model 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 utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0071] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0072] The applicant declares that the above is only a specific implementation method of the present utility model, but the protection scope of the present utility model is not limited thereto. The technicians in the relevant technical field should understand that any changes or substitutions that can be easily thought of by the technicians in the relevant technical field within the technical scope disclosed in the present utility model fall within the protection scope and disclosure scope of the present utility model.

Claims

1. A small outer diameter cable packer for hydraulically controlled pipeline setting, characterized in that: It includes a main body and a rubber cylinder assembly, a connecting sleeve, a piston assembly, a sliding sleeve, a locking ring assembly, a slip assembly, a release control sleeve and a sealing inspection sleeve which are sequentially sleeved on the outside of the main body from top to bottom; The main body is formed with a large through hole, a small through hole and a pressure transmission hole arranged along the axis, and the pressure transmission hole is connected to the sealing cavity through a hole channel; The main oil pipe is arranged in the large through hole of the main body, and the two free ends of the main oil pipe are respectively provided with a variable buckle coupling and a variable buckle joint, and an oil pipe limiting sleeve and an unsealing screw sleeve are respectively provided between the main oil pipe and the two ends of the large through hole; The rubber cylinder assembly includes a rubber cylinder group and rubber cylinder stop sleeves and rubber cylinder pressure rings arranged at the upper and lower ends of the rubber cylinder group. The rubber cylinder group includes two side rubber cylinders and a middle rubber cylinder arranged between the two side rubber cylinders. A rubber cylinder spacer ring is arranged between any side rubber cylinder and the middle rubber cylinder. The piston assembly includes an upward piston and a locking piston, and a piston sleeve sleeved outside the upward piston and the locking piston; The lock ring assembly comprises an upper lock ring and a lower lock ring pressing sleeve, the upper lock ring is arranged between the upward piston and the piston sleeve, and a limit key is arranged on the inner side of the upper lock ring; a lower lock ring is arranged on the inner side of the upper end of the lower lock ring pressing sleeve, and a lower lock ring spring is arranged above the lower lock ring; The slip assembly comprises an outer slip and a lower cone sleeve of a slip frame which are sequentially arranged from top to bottom, and a slip frame which is sleeved outside the outer slip and the lower cone sleeve of the slip frame, a hole is arranged on the inner wall of the middle part of the slip frame, and an outer slip spring is arranged in the hole; The lower cone sleeve of the slip frame and the unsealing control sleeve are threadedly connected and fastened with a set screw. The specific assembly structure is as follows: the outer wall of the bottom end of the lower cone sleeve of the slip frame forms an annular groove, and the inner wall of the groove forms a thread; the inner wall of the top end of the unsealing control sleeve forms an annular groove, and the inner wall of the groove forms a thread. The groove of the lower cone sleeve of the slip frame is threadedly matched with the groove of the unsealing control sleeve; The unsealing control sleeve and the sealing inspection sleeve are threadedly connected.

2. The hydraulically controlled pipeline setting small outer diameter cable packer according to claim 1 is characterized by: The sealing cavity is formed by surrounding the bottom surface of the locking piston, the top surface of the sliding sleeve, the inner wall of the piston sleeve and the outer wall of the body.

3. The hydraulically controlled pipeline setting small outer diameter cable packer according to claim 1, characterized in that: A sealing plug is arranged at the port of the pressure transmission hole.

4. The hydraulically controlled pipeline setting small outer diameter cable packer according to claim 1, characterized in that: An annular groove is formed on the outer wall of the lower end of the main oil pipe, and a sealing ring is arranged between the outer wall of the main oil pipe below the groove and the wall of the large through hole of the body.

5. The hydraulically controlled pipeline setting small outer diameter cable packer according to claim 1, characterized in that: The rubber cylinder stop sleeve is connected to the body through threads, and an anti-rotation pin is arranged between the two. The rubber cylinder pressure ring and the body are fixed by a sealing pin.

6. The hydraulically controlled pipeline setting small outer diameter cable packer according to claim 1, characterized in that: The upper end of the upward piston is buckled with the lower end of the connecting sleeve; the locking piston is arranged below the upward piston and is spaced apart from the upward piston, and sealing rings are arranged on the inner and outer walls of the locking piston.

7. The hydraulically controlled pipeline setting small outer diameter cable packer according to claim 1, characterized in that: The inner and outer sides of the upper locking ring, the inner wall of the piston sleeve in contact with the upper locking ring, and the outer wall of the upward piston all form sawtooth threads; the outer wall of the body corresponding to the lower locking ring pressing sleeve and the inner wall of the lower locking ring all form sawtooth threads.

8. The hydraulically controlled pipeline setting small outer diameter cable packer according to claim 1, characterized in that: The top of the slip frame is sleeved on the outside of the lower locking ring pressing sleeve, and a convex ring is formed on the inner wall of the top end of the slip frame, and a convex ring is formed on the outer wall of the bottom end of the lower locking ring pressing sleeve. The convex rings of the slip frame and the lower locking ring pressing sleeve are buckled, and the slip frame and the lower locking ring pressing sleeve are fixed by sealing pins; the lower cone sleeve of the slip frame and the slip frame are fixed by limiting pins of the slip frame.

9. The hydraulically controlled pipeline setting small outer diameter cable packer according to claim 1, characterized in that: A hole groove is formed at the position corresponding to the unsealing control sleeve, a movable lug is arranged in the hole groove, a compression spring is arranged between the movable lug and the bottom of the hole groove, a groove is formed at the position corresponding to the unsealing control sleeve and the movable lug, and the groove fits with the outer side of the movable lug.

10. The hydraulically controlled pipeline setting small outer diameter cable packer according to claim 1, characterized in that: A sealing ring is arranged between the inner wall of the inspection seal sleeve and the outer wall of the body.

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