An ESUB module under-gun counterweight system

Abstract

The utility model is applicable to the technical field of cluster perforation of oil and gas wells, and provides an ESUB module under-gun counterweight system, including male and female upper connectors, wiring components, signal transmission lines, counterweight gun bodies, double male lower connectors and fixed-line components. The utility model sets connectors at both ends of the counterweight gun body, and designs wiring components and fixed-line components; the outer shell of the wiring component uses polytetrafluoroethylene material, which ensures the strength while reliably insulating the internal structure from the outer shell, and the inner part of the wiring component is provided with a copper tube, which improves the sliding flexibility of the touch rod while improving the reliable contact of the internal structure; the counterweight gun body uses a tungsten steel integrated structure, which improves the stability and versatility of the core counterweight gun body; the fixed-line component uses screws and nuts to effectively fix the signal transmission line, avoid the entanglement of the line during the fixing process, and improve the assembly efficiency. The ESUB module under-gun counterweight system is placed at the lower end of the ESUB module gun string, which can greatly improve the reliability of construction.

Description

Technical Field

[0001] The utility model belongs to the technical field of cluster perforation of oil and gas wells, and particularly relates to an ESUB module under-gun counterweight system. Background Art

[0002] In the process of shale oil and shale gas development, most wells currently use the horizontal well cluster perforation and staged fracturing completion technology. The wellhead pressure of this type of well is relatively large, and the cable can only be lowered into the well by the gun string's own gravity. If the gun string is light, it cannot overcome the wellhead pressure and go down the well smoothly. At this time, it is necessary to increase the weight on the basis of the original gun string to ensure that the overall pipe string mass is large enough to overcome the bottom hole pressure and go down the well smoothly.

[0003] The counterweight structures of the ESUB gun string systems currently in use are cumbersome to assemble and have poor stability. They need to repeatedly replace communication components to complete use, which greatly affects the efficiency and reliability of on-site construction. Secondly, the counterweight structures used in the ESUB modular gun system are all designed at the top of the gun string. If there is a problem with the counterweight communication, it will seriously affect the reliability of the entire gun string. Therefore, an ESUB modular gun under-gun counterweight system is proposed. Utility Model Content

[0004] The purpose of the utility model is to provide an ESUB module under-gun counterweight system, aiming to solve the problems raised in the above-mentioned background technology.

[0005] An embodiment of the utility model is implemented as follows: an ESUB module under-gun counterweight system includes a male and female upper joint, a wiring assembly is provided in the male and female upper joint, and a signal transmission line is welded to the lower end of the wiring assembly; the lower end of the male and female upper joint is connected to a counterweight gun body, the lower end of the counterweight gun body is provided with a double male lower joint, a fixed line assembly is provided in the double male lower joint, and the signal transmission line passes through the counterweight gun body and is connected to the fixed line assembly.

[0006] Furthermore, one end of the male and female upper joints is provided with a threaded buckle, which is connected to the lower end of the ESUB gun string, and the other end is provided with a sealing groove to cooperate with a sealing ring to achieve sealing; the male and female upper joints have built-in through holes, and the through holes of the male and female upper joints are provided with wiring components.

[0007] Furthermore, the outer shell of the wiring assembly is made of insulating material polytetrafluoroethylene; one end of the wiring assembly is provided with a thread, and the other end is a hexagonal structure; a conductive copper tube is provided inside the wiring assembly, and a wiring copper screw is provided at the lower end of the conductive copper tube.

[0008] Furthermore, the signal transmission line adopts 12 high-temperature wires for conduction, and the outside is covered with a high-temperature resistant wire protection tube.

[0009] Furthermore, the counterweight gun body is an integrated structure and is made of tungsten steel; both ends of the counterweight gun body are female buckles, and the female buckles at both ends are respectively connected to the male and female upper joints and the double male lower joints; a through hole is provided inside the counterweight gun body, and the through hole of the counterweight gun body is used for routing signal transmission lines.

[0010] Furthermore, both ends of the double male lower joint are provided with sealing grooves to cooperate with sealing rings to achieve sealing; an empty compartment is provided inside the double male lower joint for storing signal transmission lines; a through hole is provided inside the double male lower joint, and a wire fixing component is provided inside the through hole of the double male lower joint; a step is provided at the lower end of the double male lower joint for limiting the position of the wire fixing component; a pressure ring is provided inside the double male lower joint, and the wire fixing component is limited in the double male lower joint by the pressure ring.

[0011] Furthermore, the wire fixing assembly includes a screw, a nut and a polysulfone part; the screw is an M6 thread; the end face of the nut is provided with a recess; the polysulfone part is provided with a positioning key for positioning, and the inner hole is provided with a flat groove for screw limiting.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The ESUB module under-gun counterweight system has joints at both ends of the counterweight gun body, and is designed with wiring components and fixed wire components; the outer shell of the wiring component is made of polytetrafluoroethylene material, which ensures strength while reliably insulating the internal structure from the outer shell. The wiring component is equipped with a copper tube to improve the sliding flexibility of the touch rod and the reliable contact of the internal structure; the counterweight gun body uses a tungsten steel integrated structure to improve the stability and versatility of the core counterweight gun body; the fixed wire component uses screws and nuts to effectively fix the signal transmission line, avoid the entanglement of the line during the fixing process, and improve the efficiency of assembly. The ESUB module under-gun counterweight system is placed at the lower end of the ESUB module gun string, which can greatly improve the reliability of construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of the ESUB module under-gun counterweight system.

[0015] Figure 2 This is a schematic diagram of the structure of the wiring components in the ESUB module under-gun counterweight system.

[0016] Figure 3 This is a schematic diagram of the structure of the wire fixing components in the under-gun counterweight system of the ESUB module.

[0017] Figure 4 Schematic diagram of the structure of the polysulfone component in the ESUB module under-gun counterweight system; (a) is a cross-sectional view of the polysulfone component, and (b) is a side view of (a).

[0018] In the figure: 1-male and female upper connectors, 2-wiring assembly, 3-signal transmission line, 4-weighted gun body, 5-double male lower connector, 6-wire fixing assembly, 6-1-screw, 6-2-polysulfone part, 6-3-nut, 7-pressure ring. DETAILED DESCRIPTION

[0019] 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.

[0020] The specific implementation of the present utility model is described in detail below in conjunction with specific embodiments.

[0021] like Figure 1-3 As shown, an ESUB module under-gun counterweight system provided by an embodiment of the utility model includes a male and female upper joint 1, a wiring assembly 2 is provided in the male and female upper joint 1, and a signal transmission line 3 is welded to the lower end of the wiring assembly 2; the lower end of the male and female upper joint 1 is connected to a counterweight gun body 4, the lower end of the counterweight gun body 4 is provided with a double male lower joint 5, a wire fixing assembly 6 is provided in the double male lower joint 5, and the signal transmission line 3 passes through the counterweight gun body 4 and is connected to the wire fixing assembly 6.

[0022] In the embodiment of the utility model, the counterweight system under the ESUB modular gun can only be used in the ESUB modular gun system; it can only be set at the lower end of the ESUB modular gun system; the weight of the counterweight can be designed according to requirements.

[0023] like Figure 1 and Figure 2 As shown, as a preferred embodiment of the utility model, one end of the male and female upper joint 1 is provided with a threaded buckle, which is connected to the lower end of the ESUB gun string, and the other end is provided with a sealing groove to cooperate with a sealing ring to achieve sealing; the male and female upper joint 1 has a built-in through hole, and a wiring assembly 2 is provided in the through hole of the male and female upper joint 1, and the wiring assembly 2 is limited in the male and female upper joint 1 by threads.

[0024] like Figure 1 and Figure 2 As shown, as a preferred embodiment of the utility model, the upper end of the wiring assembly 2 is provided with an elastic electric shock, and the lower end is provided with a signal transmission line 3; the shell of the wiring assembly 2 is made of insulating material polytetrafluoroethylene; one end of the wiring assembly 2 is provided with a thread, and the wiring assembly 2 is limited in the male and female upper joints 1 through the thread, and the other end is a hexagonal structure to complete product assembly and disassembly; a conductive copper tube is provided inside the wiring assembly 2 to reduce friction and improve conductivity reliability; a wiring copper screw is provided at the lower end of the conductive copper tube, which is connected to the signal transmission line 3.

[0025] like Figure 1As shown, as a preferred embodiment of the utility model, the signal transmission line 3 adopts 12 high-temperature wires for conduction, and the outside is covered with a high-temperature resistant wire protection tube.

[0026] like Figure 1 As shown, as a preferred embodiment of the utility model, the counterweight gun body 4 is an integrated structure and is made of tungsten steel; both ends of the counterweight gun body 4 are female buckles, and the female buckles at both ends are respectively connected to the male and female upper connectors 1 and the double male lower connectors 5; a through hole is provided inside the counterweight gun body 4, and the through hole of the counterweight gun body 4 is used for routing the signal transmission line 3.

[0027] like Figure 1 and Figure 3 As shown, as a preferred embodiment of the utility model, both ends of the double male lower connector 5 are provided with sealing grooves to cooperate with sealing rings to achieve sealing; a larger empty space is provided inside the double male lower connector 5 for storing the signal transmission line 3; a through hole is provided inside the double male lower connector 5, and a wire fixing component 6 is provided inside the through hole of the double male lower connector 5; a step is provided at the lower end of the double male lower connector 5 for limiting the position of the wire fixing component 6; a pressure ring 7 is provided inside the double male lower connector 5, and the wire fixing component 6 is limited in the double male lower connector 5 by the pressure ring 7.

[0028] like Figure 1-4 As shown, as a preferred embodiment of the utility model, the wire fixing component 6 includes a screw 6-1, a nut 6-3 and a polysulfone part 6-2; the screw 6-1 is an M6 thread, and its middle part is milled flat to prevent the wire from winding during the wire fixing process; the end face of the nut 6-3 is recessed to facilitate the centering of the lower end contact pin; the polysulfone part 6-2 is provided with a positioning key for positioning, and the inner hole is designed with a flat groove to limit the screw.

[0029] The above are only preferred implementations of the utility model. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the concept of the utility model. These should also be regarded as the protection scope of the utility model. These will not affect the effect of the implementation of the utility model and the practicality of the patent.

Claims

1. An ESUB module under-gun counterweight system, characterized in that: It includes male and female upper joints, which are provided with wiring components, and a signal transmission line is welded to the lower end of the wiring component; the lower end of the male and female upper joints is connected to a counterweight gun body, and the lower end of the counterweight gun body is provided with a double male lower joint, and a fixed line component is provided in the double male lower joints, and the signal transmission line passes through the counterweight gun body and is connected to the fixed line component.

2. The ESUB module under-gun counterweight system according to claim 1, characterized in that: One end of the male and female upper joints is provided with a threaded buckle, which is connected to the lower end of the ESUB gun string, and the other end is provided with a sealing groove to cooperate with a sealing ring to achieve sealing; the male and female upper joints have built-in through holes, and the through holes of the male and female upper joints are provided with wiring components.

3. The ESUB module under-gun counterweight system according to claim 1, characterized in that: The shell of the wiring assembly is made of insulating material polytetrafluoroethylene; one end of the wiring assembly is provided with a thread, and the other end is a hexagonal structure; a conductive copper tube is provided inside the wiring assembly, and a wiring copper screw is provided at the lower end of the conductive copper tube.

4. The ESUB module under-gun counterweight system according to claim 1, characterized in that: The signal transmission line adopts 12 high temperature wire for conduction and is covered with a high temperature resistant wire protection tube on the outside.

5. The ESUB module under-gun counterweight system according to claim 1, characterized in that: The counterweight gun body is an integrated structure and is made of tungsten steel; both ends of the counterweight gun body are female buckles, and the female buckles at both ends are respectively connected to the male and female upper joints and the double male lower joints; a through hole is provided inside the counterweight gun body, and the through hole of the counterweight gun body is used for routing signal transmission lines.

6. The ESUB module under-gun counterweight system according to claim 1, characterized in that: Both ends of the double male lower joint are provided with sealing grooves to cooperate with sealing rings to achieve sealing; an empty compartment is provided inside the double male lower joint for storing signal transmission lines; a through hole is provided inside the double male lower joint, and a wire fixing component is provided inside the through hole of the double male lower joint; a step is provided at the lower end of the double male lower joint for limiting the position of the wire fixing component; a pressure ring is provided inside the double male lower joint, and the wire fixing component is limited in the double male lower joint by the pressure ring.

7. The ESUB module under-gun counterweight system according to claim 1, characterized in that: The wire fixing assembly includes a screw, a nut and a polysulfone part; the screw is an M6 thread; the end face of the nut is provided with a recess; the polysulfone part is provided with a positioning key for positioning, and the inner hole is provided with a flat groove for screw limiting.

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