Retractable auxiliary connector for oil and gas well coiled tubing perforator

Abstract

The utility model relates to a connector, concretely relates to a telescopic auxiliary connector for a perforating gun of oil and gas well continuous tubing, solves the problem that the perforating gun is connected manually, operation efficiency is low, and the perforating gun's core passing part can be hurt, the sealing part can be damaged or the personnel can be hurt. The utility model discloses when using, the perforating gun is put into the installation cylinder, and the end of the perforating gun is lifted through the support seat, the spring is pressed at this moment, and the elastic force vertically upwards provides the support for the perforating gun, and the staff can carry out the thread alignment under the condition of having the support, need not worry about the perforating gun damage or personnel injury caused by dropping, the hemispherical convex is set on the base, can adjust the position of the perforating gun by rotating the hemispherical convex, and the connection of the perforating gun can be completed by only one person, and the work efficiency is improved.

Description

Technical Field

[0001] This utility model relates to connectors, specifically to a telescopic auxiliary connector for perforators used in coiled tubing for oil and gas wells. Background Technology

[0002] In the field of oil and gas well drilling, horizontal well drilling is more difficult, especially the perforation stage before formal production. The equipment used is very large, and the requirements for operational efficiency and safety are very high.

[0003] Before the perforating gun 03 is lowered into the well, the coiled tubing 02 and the blowout preventer must first be assembled, such as... Figure 1 As shown, the coiled tubing 02 passes through the sealing head of the blowout preventer (BOP) and enters the BOP pipe 01 of the BOP. It is then lifted vertically by a crane. Perforating guns 03 are then connected to the coiled tubing 02. Perforating guns 03 typically consist of multiple sections. The general procedure involves a worker connecting one section of perforating gun 03 to the coiled tubing 02 via threads. The crane then lifts the coiled tubing 02 and BOP pipe 01, and the next section of perforating gun 03 is connected to the previous section via threads, until all perforating guns 03 are connected. However, the connection of the perforating guns 03 is always performed while suspended in the air. Workers must lift the perforating guns 03 to align the threads, resulting in low efficiency. Furthermore, if the worker loses control, there is a risk of damage to the perforating gun's core components, seals, or even injury to personnel. Utility Model Content

[0004] To address the technical problems of low operational efficiency and potential damage to the perforating gun's core components, seals, or personnel caused by manually connecting the perforating gun, this utility model provides a telescopic auxiliary connector for perforators used in oil and gas well coiled tubing.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A telescopic auxiliary connector for a perforator in oil and gas well coiled tubing is characterized by comprising an mounting cylinder, a base, a spring, and a support. The mounting cylinder is located at the center of the base, and a hemispherical protrusion is provided on the base corresponding to the mounting position of the mounting cylinder, with the protrusion direction of the hemispherical protrusion facing away from the mounting cylinder. Both the spring and the support are installed inside the mounting cylinder, with one end of the spring abutting against the base and the other end abutting against the support. The center of the support has a first through hole for the core of the perforating gun to pass through.

[0006] Furthermore, it also includes thrust bearings; The support includes a cylindrical body and an abutment ring disposed on the top of the body. The central hole of the cylindrical body forms the first through hole. The thrust bearing is sleeved on the body, with one end abutting against the abutment ring and the other end abutting against the other end of the spring.

[0007] Furthermore, a limiting step is provided on the inner wall of the mounting cylinder, and the top surface of the abutting ring abuts against the step surface of the limiting step.

[0008] Furthermore, it also includes anti-collision pads; The anti-collision pad is located on the top of the abutment ring, and a second through hole is provided at the center corresponding to the first through hole.

[0009] Furthermore, the anti-collision pad is made of rubber, polytetrafluoroethylene or nylon.

[0010] Furthermore, the thrust bearing is a dustproof thrust bearing.

[0011] Furthermore, the height of the mounting cylinder is 300mm-500mm.

[0012] The beneficial effects of this utility model are: (1) The telescopic auxiliary connector for perforators in oil and gas well coiled tubing provided by this utility model allows the perforator to be placed in the installation cylinder during use. The end of the perforator is lifted by the support seat. At this time, the spring is compressed and its elastic force is vertically upward to support the perforator. The operator can then perform thread alignment with support without worrying about the perforator being damaged or the operator being injured. A hemispherical protrusion is provided on the base, and the position of the perforator can be adjusted by rotating the hemispherical protrusion. Only one person is needed to complete the connection of the perforator, thus improving work efficiency.

[0013] (2) The telescopic auxiliary connector for perforators for oil and gas well coiled tubing provided by this utility model is also equipped with a thrust bearing, which facilitates the rotation of the perforator for threaded connection after the perforator is aligned.

[0014] (3) The telescopic auxiliary connector for perforators of oil and gas well coiled tubing provided by this utility model has a limiting step on the inner wall of the mounting cylinder, and the top surface of the abutment ring abuts against the step surface of the limiting step to prevent the support seat, spring and thrust bearing from coming out when inverted.

[0015] (4) The telescopic auxiliary connector for perforators for oil and gas well coiled tubing provided by this utility model has an anti-collision pad on the top of the abutment ring. The anti-collision pad is made of rubber, polytetrafluoroethylene or nylon to prevent damage to the end face of the perforating gun when the perforating gun is threaded together.

[0016] (5) The thrust bearing in the telescopic auxiliary connector for perforators of oil and gas well coiled tubing provided by this utility model is a dustproof thrust bearing, which reduces the number of times the thrust bearing needs to be maintained. Attached Figure Description

[0017] Figure 1 This is a schematic diagram showing the connection of the existing coiled tubing, blowout preventer, and perforation gun. Figure 2 This is a cross-sectional view of an embodiment of the telescopic auxiliary connector for perforators used in oil and gas well coiled tubing of this utility model; Figure 3 This is a schematic diagram of the structure of this utility model embodiment in use; The attached figures are labeled as follows: 01-Blowout preventer, 02-Continuous tubing, 03-Perforation gun; 1-Mounting cylinder, 2-Base, 21-Hemispherical protrusion; 3-Spring, 4-Support seat, 41-First through hole, 42-Main body, 43-Abutting ring; 5-Thrust bearing, 6-Anti-collision pad, 61-Second through hole. Detailed Implementation

[0018] Reference Figure 2 and Figure 3 The present invention provides a telescopic auxiliary connector for a perforator in a coiled tubing system for oil and gas wells, comprising a mounting cylinder 1, a base 2, a spring 3, and a support 4.

[0019] The mounting cylinder 1 is a hollow cylindrical structure with a height of 300mm-500mm. It is located at the center of the base 2, and a hemispherical protrusion 21 is provided on the base 2 corresponding to the mounting position of the mounting cylinder 1. The protrusion direction of the hemispherical protrusion 21 is away from the mounting cylinder 1.

[0020] Spring 3 and support 4 are both installed inside mounting cylinder 1, with one end of spring 3 abutting against base 2 and the other end abutting against support 4. A first through hole 41 is provided in the center of support 4 for the core component of perforating gun 03 to pass through, so as to prevent damage to the core component when supporting the end of perforating gun 03.

[0021] To facilitate threaded connection by rotating the perforating gun 03 after alignment, a thrust bearing 5 is also provided. To secure the thrust bearing 5, the support 4 includes a cylindrical body 42 and an abutment ring 43 on top of the body 42. The central hole of the cylindrical body 42 forms a first through hole 41. The thrust bearing 5 is sleeved on the body 42, with one end abutting against the abutment ring 43 and the other end abutting against the other end of the spring 3. The thrust bearing 5 converts sliding friction into rolling friction, improving threaded connection efficiency. In this embodiment, a dustproof thrust bearing 5 is used to reduce the frequency of maintenance.

[0022] To prevent components from coming out of the mounting cylinder 1, a limiting step is provided on the inner wall of the mounting cylinder 1. The top surface of the abutment ring 43 abuts against the step surface of the limiting step, and the supporting seat 4 is held in place by the limiting step to prevent the components from coming out of the mounting cylinder 1 when the entire connector is inverted.

[0023] Because the end of the perforating gun 03 will abut against the support 4 after it is placed inside the mounting cylinder 1, a shock absorber 6 is provided to prevent the support 4 from damaging the end face of the perforating gun 03. The shock absorber 6 is made of rubber, polytetrafluoroethylene, or nylon to prevent damage to the metal perforating gun 03. The shock absorber 6 is located on the top of the abutment ring 43, and a second through hole 61 is provided at the center corresponding to the first through hole 41 to facilitate the passage of the core component of the perforating gun 03.

[0024] When using, such as Figure 3 As shown, a section of the perforating gun 03 is placed into the mounting cylinder 1, and the end of the perforating gun 03 is lifted by the support 4. At this time, the spring 3 is compressed, and its elastic force provides support for the perforating gun 03 vertically upward. The operator can then perform thread alignment with support without worrying about dropping the perforating gun 03 and causing damage or injury to the operator. The position of the perforating gun 03 can be adjusted by rotating the hemispherical protrusion 21. The connection of the perforating gun 03 can be completed by one person, thus improving work efficiency.

[0025] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A telescopic auxiliary connector for perforators used in coiled tubing of oil and gas wells, characterized in that: Includes mounting cylinder (1), base (2), spring (3) and support (4); The mounting cylinder (1) is located at the center of the base (2), and a hemispherical protrusion (21) is provided on the base (2) corresponding to the mounting position of the mounting cylinder (1), and the protrusion direction of the hemispherical protrusion (21) is away from the mounting cylinder (1). The spring (3) and the support (4) are both installed inside the mounting cylinder (1). One end of the spring (3) abuts against the base (2), and the other end abuts against the support (4). The center of the support (4) is provided with a first through hole (41) through which the core of the perforating gun (03) passes.

2. The telescopic auxiliary connector for perforators in coiled tubing for oil and gas wells according to claim 1, characterized in that: It also includes thrust bearings (5); The support (4) includes a cylindrical body (42) and an abutment ring (43) disposed on the top of the body (42). The central hole of the cylindrical body (42) forms the first through hole (41). The thrust bearing (5) is sleeved on the body (42), with one end abutting against the abutment ring (43) and the other end abutting against the other end of the spring (3).

3. The telescopic auxiliary connector for perforators in coiled tubing for oil and gas wells according to claim 2, characterized in that: The inner wall of the mounting cylinder (1) is provided with a limiting step, and the top surface of the abutting ring (43) abuts against the step surface of the limiting step.

4. The telescopic auxiliary connector for perforators in coiled tubing for oil and gas wells according to claim 3, characterized in that: It also includes anti-collision pads (6); The anti-collision pad (6) is set on the top of the abutment ring (43), and a second through hole (61) is opened in the center corresponding to the first through hole (41).

5. The telescopic auxiliary connector for perforators in coiled tubing for oil and gas wells according to claim 4, characterized in that: The anti-collision pad (6) is made of rubber, polytetrafluoroethylene or nylon.

6. The telescopic auxiliary connector for perforators in coiled tubing for oil and gas wells according to claim 2, characterized in that: The thrust bearing (5) is a dustproof thrust bearing.

7. The telescopic auxiliary connector for perforators in coiled tubing for oil and gas wells according to claim 1, characterized in that: The height of the mounting cylinder (1) is 300mm-500mm.

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