Packer for oil and gas exploitation

Abstract

The utility model discloses a packer for oil and gas exploitation, which belongs to the technical field of oil and gas exploitation and is characterized by comprising a packer body, the top of the packer body is in threaded connection with a well drilling tubular column, the top of the surface of the packer body is fixedly connected with a positioning sleeve shell, reinforcing bolts are arranged on the periphery of the positioning sleeve shell, and the surface of the positioning sleeve shell is fixedly connected with the well drilling tubular column. The side, close to the drilling pipe column, of the reinforcing bolt penetrates into an inner cavity of the positioning sleeve shell, and the problems that an existing packer is usually connected and fixed to the drilling pipe column through threads, then the packer is driven by the drilling pipe column to be lowered to the proper depth in a well, but the fixing is not firm enough only through a threaded connection mode, and the sealing effect is poor are solved. The problems that when a well drilling pipe column and a packer descend, vibration can be generated, the loosening situation can happen, an existing packer is generally lack of a protection structure, in the descending process of the packer, friction can be possibly generated between a rubber barrel of the packer and a well wall, and the packing performance is reduced are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of oil and gas exploitation, in particular to a packer for oil and gas exploitation. Background Art

[0002] A packer is a downhole tool connected to the downhole tubing string and used to isolate the annular space between the oil pipe and the oil and gas well casing or the open hole wall.

[0003] At present, a Chinese patent with announcement number CN218454726U discloses a packer for oil and gas development, wherein a pipeline is provided on one side of the packer body, and a bidirectional screw rod is movably embedded and connected on one side of the packer body, a first threaded block is threadedly connected to the surface of the bidirectional screw rod, and a telescopic grid is installed at the bottom end of the first threaded block, and the bidirectional screw rod is screwed so that the first threaded block and the second threaded block are brought closer to each other on the surface of the bidirectional screw rod, and the first threaded block and the second threaded block also slide in the first groove, and the telescopic grid is pushed to telescopically move by the first threaded block and the second threaded block, and the first connecting block and the second connecting block are pushed by the telescopic grid, so as to push the limit plate to clamp the sucker rod installed inside the pipeline, so that the inner wall of the packer body is installed more firmly, and the installed clamped sucker rod is sealed by the first sealing ring and the second sealing ring to avoid the situation of poor sealing during clamping, thereby improving the efficiency of installation.

[0004] Existing packers are usually connected and fixed to the drilling pipe by threads, and then the drilling pipe drives the packer to a suitable depth in the well. However, the fixation by threaded connection alone is not strong enough. When the drilling pipe and the packer are lowered, vibration will be generated, which may cause loosening. In addition, existing packers usually lack protective structures. During the descent of the packer, the rubber sleeve of the packer may rub against the well wall, thereby causing a decrease in the sealing performance. Utility Model Content

[0005] The utility model provides a packer for oil and gas development, aiming to solve the problem that the existing packers are usually connected and fixed to the drilling pipe by threads, and then the packer is driven by the drilling pipe to a suitable depth in the well, but the fixing method only through the threaded connection is not strong enough, and vibration will be generated when the drilling pipe and the packer are lowered, so that looseness may occur, and the existing packers usually lack a protective structure. During the descent of the packer, the rubber tube of the packer may rub against the well wall, thereby causing the problem of reduced sealing performance.

[0006] The utility model is implemented as follows: a packer is used for oil and gas development, comprising a packer body, the top of the packer body is connected to a drilling string through a thread, a positioning sleeve is fixedly connected to the top of the surface of the packer body, reinforcing bolts are arranged around the positioning sleeve, the side of the reinforcing bolt close to the drilling string penetrates into the inner cavity of the positioning sleeve, and a protective component is arranged on the surface of the packer body;

[0007] The protection assembly includes a spring, a protection plate and a ball. The spring is fixedly connected to the packer body on one side close to the packer body, the protection plate is fixedly connected to the spring on one side close to the spring, and the ball is embedded in the protection plate on one side away from the spring.

[0008] In order to achieve the positioning and guiding effect of the positioning sleeve when the packer body and the drilling pipe are installed, as the preferred packer for oil and gas development of the utility model, the drilling pipe is inserted into the inner cavity of the positioning sleeve, and the inner diameter of the positioning sleeve is larger than the outer diameter of the drilling pipe.

[0009] In order to achieve the effect of strengthening the connection between the packer body and the drilling pipe string, as a preferred packer for oil and gas development of the utility model, the number of the reinforcing bolts is four and they are evenly distributed around the positioning sleeve.

[0010] In order to achieve the effect that the reinforcement bolts can be inserted into the inner cavity of the positioning sleeve to lock the drilling pipe, and the position of the reinforcement bolts can be positioned by threads, as a preferred oil and gas extraction seal of the utility model, the positioning sleeve is provided with threaded holes used in conjunction with reinforcement bolts on all sides, and the surface of the reinforcement bolts is connected to the inner wall of the threaded hole by threads.

[0011] In order to increase the friction force, thereby increasing the locking effect of the reinforcement bolt on the drilling pipe, and preventing the surface of the drilling pipe from being scratched, the oil and gas extraction seal of the utility model is preferably used in which a rubber pad is fixedly connected to the side of the reinforcement bolt close to the drilling pipe, and the side of the rubber pad close to the drilling pipe is in close contact with the drilling pipe.

[0012] In order to achieve the effect of all-round protection of the packer body, as the preferred packer for oil and gas development of the utility model, the number of the protection components is twelve, and they are evenly divided into two groups and evenly distributed on the top and bottom of the packer body surface.

[0013] In order to achieve the effect of increasing the fit between the protective plate and the ball and the well wall, as a preferred packer for oil and gas development of the utility model, the number of the springs is several and evenly distributed on one side of the protective plate close to the packer body.

[0014] In order to increase the contact area with the well wall and enable the protective plate to move conveniently with the packer body, as a preferred packer for oil and gas development of the utility model, the number of the balls is several and evenly distributed on the side of the protective plate away from the packer body.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The oil and gas development packer is provided with a packer body, a drilling pipe, a positioning sleeve, a reinforcing bolt and a protective component. When in use, the packer body is sleeved on the surface of the drilling pipe through the positioning sleeve, and then the packer body is connected to the drilling pipe through a thread. After the connection, the reinforcing bolt is adjusted to lock the drilling pipe, thereby achieving the effect of reinforcing the connection between the packer body and the drilling pipe, and preventing the threaded connection between the packer body and the drilling pipe from loosening. Then, the packer body is driven to be lowered to a suitable depth in the well through the drilling pipe, and then the isolation work is carried out. In the process of lowering the packer body, the protective component can achieve the effect of preventing the rubber sleeve of the packer body from rubbing against the well wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is the overall structural diagram of the packer used in oil and gas development of the utility model;

[0018] Figure 2 This is a disassembled structural diagram of the packer body, drilling string and positioning sleeve in the utility model;

[0019] Figure 3 This is a disassembled structural diagram of the reinforcing bolts and the positioning sleeve in the utility model;

[0020] Figure 4 This is a structural diagram of the positioning sleeve in the utility model from another perspective;

[0021] Figure 5 It is a structural diagram of the protective component in the utility model.

[0022] In the figure, 1. Packer body; 2. Drilling pipe; 3. Positioning sleeve; 4. Reinforcement bolt; 5. Protection assembly; 501. Spring; 502. Protection plate; 503. Ball; 6. Threaded hole; 7. Rubber pad. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0024] In the description of the present invention, it should be understood that the terms "length", "width", "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 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. In addition, in the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0025] See also Figure 1-5 The utility model provides a technical solution: a packer for oil and gas development, comprising a packer body 1, the top of the packer body 1 is connected to a drilling pipe string 2 by a thread, a positioning sleeve 3 is fixedly connected to the top of the surface of the packer body 1, and reinforcing bolts 4 are arranged around the positioning sleeve 3. The reinforcing bolts 4 are passed through the inner cavity of the positioning sleeve 3 on the side close to the drilling pipe string 2, and a protective component 5 is arranged on the surface of the packer body 1;

[0026] The protective assembly 5 includes a spring 501, a protective plate 502 and a ball 503. The side of the spring 501 close to the packer body 1 is fixedly connected to the packer body 1, the side of the protective plate 502 close to the spring 501 is fixedly connected to the spring 501, and the ball 503 is embedded in the side of the protective plate 502 away from the spring 501.

[0027] In this embodiment: by setting the packer body 1, the drilling pipe 2, the positioning sleeve 3, the reinforcing bolts 4 and the protective assembly 5, when in use, the packer body 1 is sleeved on the surface of the drilling pipe 2 through the positioning sleeve 3, and then the packer body 1 is connected to the drilling pipe 2 through threads, and after the connection, the reinforcing bolts 4 are adjusted to lock the drilling pipe 2, thereby achieving the effect of reinforcing the connection between the packer body 1 and the drilling pipe 2, and preventing the threaded connection between the packer body 1 and the drilling pipe 2 from loosening, and then the packer body 1 is driven to be lowered to a suitable depth underground by the drilling pipe 2, and then the isolation work is carried out, and during the lowering process of the packer body 1, the protective assembly 5 can achieve the effect of preventing the rubber tube of the packer body 1 from rubbing against the well wall.

[0028] As a technical optimization solution of the utility model, the drilling pipe string 2 is inserted into the inner cavity of the positioning sleeve 3 , and the inner diameter of the positioning sleeve 3 is larger than the outer diameter of the drilling pipe string 2 .

[0029] In this embodiment: by setting the drilling pipe 2 to be inserted into the inner cavity of the positioning sleeve 3, the positioning sleeve 3 can play a positioning and guiding role when the packer body 1 and the drilling pipe 2 are installed. By setting the inner diameter of the positioning sleeve 3 to be larger than the outer diameter of the drilling pipe 2, the positioning sleeve 3 can be easily sleeved on the surface of the drilling pipe 2.

[0030] As a technical optimization solution of the present utility model, the number of the reinforcing bolts 4 is four and they are evenly distributed around the positioning sleeve 3 .

[0031] In this embodiment, by providing a plurality of reinforcing bolts 4, the effect of reinforcing the connection between the packer body 1 and the drilling pipe string 2 can be increased.

[0032] As a technical optimization solution of the utility model, threaded holes 6 for use with the reinforcing bolts 4 are provided on all sides of the positioning sleeve 3, and the surface of the reinforcing bolts 4 is connected to the inner wall of the threaded holes 6 by threads.

[0033] In this embodiment, threaded holes 6 are provided so that the reinforcing bolts 4 can penetrate into the inner cavity of the positioning sleeve 3 to lock the drilling pipe 2, and the position of the reinforcing bolts 4 can be positioned by the threads.

[0034] As a technical optimization solution of the utility model, a rubber pad 7 is fixedly connected to the side of the reinforcing bolt 4 close to the drilling pipe string 2 , and the side of the rubber pad 7 close to the drilling pipe string 2 is in close contact with the drilling pipe string 2 .

[0035] In this embodiment, by providing the rubber pad 7, the friction force can be increased, thereby increasing the locking effect of the reinforcing bolt 4 on the drilling pipe string 2 and preventing the surface of the drilling pipe string 2 from being scratched.

[0036] As a technical optimization solution of the present invention, the number of the protection components 5 is twelve, and they are evenly divided into two groups and evenly distributed on the top and bottom of the surface of the packer body 1 .

[0037] In this embodiment, by providing a plurality of protection components 5 , the packer body 1 can be protected in all directions.

[0038] As a technical optimization solution of the present invention, there are several springs 501 , which are evenly distributed on one side of the protection plate 502 close to the packer body 1 .

[0039] In this embodiment, by providing a plurality of springs 501 , the fit between the protection plate 502 and the ball bearings 503 and the well wall can be increased.

[0040] As a technical optimization solution of the present invention, the number of the balls 503 is several and they are evenly distributed on the side of the protection plate 502 away from the packer body 1 .

[0041] In this embodiment, by providing a plurality of balls 503 , the contact area with the well wall can be increased, and the protection plate 502 can conveniently move along with the packer body 1 .

[0042] Working principle: First, the packer body 1 is sleeved on the surface of the drilling pipe 2 through the positioning sleeve 3, and then the packer body 1 is connected to the drilling pipe 2 through threads. After the connection, the reinforcing bolt 4 is rotated to make the reinforcing bolt 4 rotate in the threaded hole 6 and move through the thread, so that the reinforcing bolt 4 is locked to the drilling pipe 2 through the rubber pad 7, thereby achieving the effect of connecting and reinforcing the packer body 1 and the drilling pipe 2, and preventing the threaded connection between the packer body 1 and the drilling pipe 2 from loosening. Then, the packer body 1 is driven to be lowered to a suitable depth in the well through the drilling pipe 2, and then the isolation work is carried out. In the process of lowering the packer body 1, the spring 501 force of the spring 501 can squeeze the protective plate 502, so that the protective plate 502 drives the ball 503 to fit with the well wall, and the ball 503 slides on the well wall, so that the protective plate 502 can prevent the rubber tube of the packer body 1 from rubbing against the well wall.

[0043] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A packer for oil and gas development, comprising a packer body (1), characterized in that: The top of the packer body (1) is connected to a drilling pipe (2) by means of a thread, the top of the surface of the packer body (1) is fixedly connected to a positioning sleeve (3), the surroundings of the positioning sleeve (3) are provided with reinforcing bolts (4), the side of the reinforcing bolts (4) close to the drilling pipe (2) penetrates into the inner cavity of the positioning sleeve (3), and the surface of the packer body (1) is provided with a protective component (5); The protective assembly (5) comprises a spring (501), a protective plate (502) and a ball (503); the spring (501) is fixedly connected to the packer body (1) on one side close to the packer body (1); the protective plate (502) is fixedly connected to the spring (501) on one side close to the spring (501); and the ball (503) is embedded in the protective plate (502) on one side away from the spring (501).

2. The packer for oil and gas development according to claim 1, characterized in that: The drilling pipe string (2) is inserted into the inner cavity of the positioning sleeve (3), and the inner diameter of the positioning sleeve (3) is larger than the outer diameter of the drilling pipe string (2).

3. The packer for oil and gas development according to claim 1, characterized in that: The number of the reinforcing bolts (4) is four and they are evenly distributed around the positioning sleeve (3).

4. The packer for oil and gas development according to claim 1, characterized in that: The positioning sleeve (3) is provided with threaded holes (6) for use with the reinforcing bolts (4) on all sides, and the surface of the reinforcing bolts (4) is connected to the inner wall of the threaded holes (6) through threads.

5. The packer for oil and gas development according to claim 1, characterized in that: A rubber pad (7) is fixedly connected to the side of the reinforcing bolt (4) close to the drilling pipe string (2), and the side of the rubber pad (7) close to the drilling pipe string (2) is in close contact with the drilling pipe string (2).

6. The packer for oil and gas development according to claim 1, characterized in that: The number of the protection components (5) is twelve, and they are evenly divided into two groups and evenly distributed on the top and bottom of the surface of the packer body (1).

7. The packer for oil and gas development according to claim 1, characterized in that: The number of the springs (501) is several and they are evenly distributed on one side of the protection plate (502) close to the packer body (1).

8. The packer for oil and gas development according to claim 1, characterized in that: The number of the balls (503) is several and they are evenly distributed on the side of the protection plate (502) away from the packer body (1).

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