CN215860114U

CN215860114U - Temperature-resistant pressure-resistant quick connection assembly for underground perforation

Info

Publication number: CN215860114U
Application number: CN202122444267.8U
Authority: CN
Inventors: 赵巧宏
Original assignee: CHONGQING SHENGPU PETROLEUM EQUIPMENT CO LTD
Current assignee: CHONGQING SHENGPU PETROLEUM EQUIPMENT CO LTD
Priority date: 2021-10-11
Filing date: 2021-10-11
Publication date: 2022-02-18
Anticipated expiration: 2031-10-11

Abstract

The utility model provides a temperature-resistant pressure-resistant quick connection assembly for downhole perforation, which relates to the technical field of petroleum equipment and comprises an upper pipeline and a lower pipeline, wherein clamping blocks are fixed on the inner wall array of the upper pipeline and positioned on the same horizontal plane, a connecting pipe is welded at the top end of the lower pipeline and movably connected with the inner wall of the upper pipeline, clamping grooves are formed in the surface array of the connecting pipe and clamped with the clamping blocks, a sleeve is arranged on the surface of the upper pipeline and in threaded connection with the surface of the lower pipeline. The inner wall array of last pipeline is fixed with the fixture block, has seted up the draw-in groove at the surface array of connecting pipe, and fixture block and draw-in groove can be in rotatory mutual block, and go up the sleeve pipe of pipeline surface activity can with lower pipeline surface threaded connection, and this kind of design has avoided using the nut bolt to fasten, when needs frequently dismantle, easy operation is convenient, has practiced thrift the time.

Description

Temperature-resistant pressure-resistant quick connection assembly for underground perforation

Technical Field

The utility model relates to the technical field of petroleum equipment, in particular to a temperature-resistant pressure-resistant quick connection assembly for underground perforation.

Background

In recent years, unconventional oil and gas resources such as shale gas, coal bed gas, dense oil and the like have become key fields of global oil and gas exploration and development, and the unconventional oil and gas cannot be developed by conventional perforation and fracturing methods and technical means. From the experience of developing shale gas abroad at present, the reservoir is developed mainly by drilling a horizontal well and adopting a large-liquid-volume multi-section fracturing well completion mode. Most horizontal wells are cased wells, the productivity can be obtained only by adopting hydraulic fracturing, and the cased wells can be subjected to hydraulic fracturing after fracturing fluid enters a passage of a stratum through perforation. The perfection of the formed seam network system after the hydraulic fracturing operation determines whether the maximum oil drainage area can be obtained in the reservoir, and further the productivity is obtained.

According to the patent with the patent number of CN209621286U, a sand blasting perforator is disclosed, and belongs to the field of oil and gas field development tools. The sand blasting perforator comprises: a connecting cylinder, at least one nozzle, a closed sliding sleeve, a split sliding sleeve and a sliding sleeve blocking device. When using the sand-blasting perforating tool provided by the utility model to perforate different positions of a reservoir, different sand-blasting perforating tools are connected with the second end of the connecting cylinder through the first end of the connecting cylinder. And (3) throwing a sealing ball into the first sand blasting perforator, wherein the sealing ball pushes the closed sliding sleeve, the split sliding sleeve and the sliding sleeve blocking device to move, so that the nozzle sprays fracturing fluid to perforate the reservoir stratum. And the sealing ball can pass into the next sand jet perforator. By adopting the mode, the sealing ball is thrown into the connected sand blasting perforators once, so that fracturing fluid in different sand blasting perforators can perforate the reservoir, the sand blasting perforators can be connected, and the efficiency of perforating the reservoir is improved.

When the existing perforator is used, one pipeline and the other pipeline are required to be disconnected from other pipelines quickly, and when a fastener is used for connection, the pipeline needs to be detached frequently, so that the workload is large, and the time is wasted.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects in the prior art and provides a temperature-resistant pressure-resistant quick connection assembly for downhole perforation.

In order to achieve the purpose, the utility model adopts the following technical scheme: the utility model provides a temperature resistant withstand voltage high-speed joint assembly for perforation in pit, includes pipeline and lower pipeline, the inner wall array of going up the pipeline is fixed with the fixture block, and the fixture block is located same horizontal plane, the top welding of lower pipeline has the connecting pipe, and the inner wall swing joint of connecting pipe and last pipeline, the draw-in groove has been seted up to the surface array of connecting pipe, and draw-in groove and the mutual block of fixture block, the surface of going up the pipeline is equipped with the sleeve pipe, and sleeve pipe and lower pipeline surface threaded connection.

Preferably, the surface of the upper pipeline is fixed with limiting plates, a sleeve is arranged between the limiting plates, and the sleeve is movably connected with the upper pipeline.

Preferably, the top of lower pipeline is equipped with reset spring, and reset spring's bottom and the top fixed connection of lower pipeline, and reset spring and the surperficial swing joint of connecting pipe, reset spring's top is fixed with the sealing ring, and sealing ring and connecting pipe swing joint.

Preferably, the diameter of the return spring is equal to the diameter of the lower pipeline, and the return spring is formed by stainless steel stretching and polishing.

Preferably, the sealing ring is formed by thermoplastic rubber, and the inner diameter of the sealing ring is equal to the diameter of the connecting pipe.

Preferably, the diameter of the upper pipeline is equal to that of the lower pipeline, and the inner diameter of the sleeve is equal to the outer diameter of the upper pipeline.

Advantageous effects

According to the utility model, the clamping block is fixed on the inner wall array of the upper pipeline, the clamping groove is formed in the surface array of the connecting pipe, the clamping block and the clamping groove can be clamped with each other in rotation, and the sleeve movable on the surface of the upper pipeline can be in threaded connection with the surface of the lower pipeline.

Drawings

FIG. 1 is an isometric view of the present invention;

FIG. 2 is an exploded view of the present invention;

FIG. 3 is an exploded view of the structure of the present invention;

fig. 4 is a cross-sectional view of the present invention.

Illustration of the drawings:

1. an upper pipeline; 2. a limiting plate; 3. a sleeve; 4. a lower pipeline; 5. a connecting pipe; 6. a seal ring; 7. a return spring; 8. a clamping block; 9. a clamping groove.

Detailed Description

In order to make the technical means, the original characteristics, the achieved purposes and the effects of the utility model easily understood, the utility model is further described below with reference to the specific embodiments and the attached drawings, but the following embodiments are only the preferred embodiments of the utility model, and not all embodiments. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative efforts belong to the protection scope of the present invention.

Specific embodiments of the present invention are described below with reference to the accompanying drawings.

The specific embodiment is as follows:

referring to fig. 1-4, a temperature-resistant and pressure-resistant quick connection assembly for downhole perforation comprises an upper pipeline 1 and a lower pipeline 4, wherein a clamping block 8 is fixed on an inner wall array of the upper pipeline 1, the clamping block 8 is located on the same horizontal plane, a connecting pipe 5 is welded at the top end of the lower pipeline 4, the connecting pipe 5 is movably connected with the inner wall of the upper pipeline 1, a clamping groove 9 is formed in a surface array of the connecting pipe 5, the clamping groove 9 is clamped with the clamping block 8, a sleeve 3 is arranged on the surface of the upper pipeline 1, and the sleeve 3 is in threaded connection with the surface of the lower pipeline 4.

The surface of the upper pipeline 1 is fixed with limiting plates 2, a sleeve 3 is arranged between the limiting plates 2, and the sleeve 3 is movably connected with the upper pipeline 1. The top of lower pipeline 4 is equipped with reset spring 7, and reset spring 7's bottom and lower pipeline 4's top fixed connection, and reset spring 7 and connecting pipe 5's surperficial swing joint, reset spring 7's top is fixed with sealing ring 6, and sealing ring 6 and connecting pipe 5 swing joint. The diameter of the return spring 7 is equal to that of the lower pipeline 4, and the return spring 7 is made of stainless steel through stretching and polishing. The sealing ring 6 is formed by thermoplastic rubber, and the inner diameter of the sealing ring 6 is equal to the diameter of the connecting pipe 5. The diameter of the upper pipeline 1 is equal to that of the lower pipeline 4, and the inner diameter of the sleeve 3 is equal to that of the outer diameter of the upper pipeline 1.

The working principle of the utility model is as follows: when an upper pipeline 1 and a lower pipeline 4 are connected, the bottom end of the upper pipeline 1 is firstly sleeved into a connecting pipe 5, the upper pipeline 1 is rotated, after a clamping block 8 on the inner wall of the upper pipeline 1 is clamped with a clamping groove 9 on the surface of the connecting pipe 5, the upper pipeline 1 is rotated again, then a sleeve 3 arranged on the surface of the upper pipeline 1 slides down to be in threaded connection with the surface of the lower pipeline 4, in the process that the sleeve 3 moves downwards, a sealing ring 6 generates pressure downwards under the action of friction force, at the moment, a reset spring 7 generates force upwards on the sealing ring 6 to enable the sealing ring 6 to deform, gaps between the sleeve 3 and the upper pipeline 1 and the lower pipeline 4 are blocked, the clamping block 8 is fixed on the inner wall array of the upper pipeline 1, the clamping groove 9 is formed in the surface array of the connecting pipe 5, the clamping block 8 and the clamping groove 9 can be clamped with each other in rotation, and the sleeve 3 moving on the surface of the upper pipeline 1 can be in threaded connection with the surface of the lower pipeline 4, the design avoids the use of nuts and bolts for fastening, and is simple and convenient to operate and saves time when the device needs to be frequently disassembled.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a temperature resistant withstand voltage high-speed joint assembly for perforation in pit, includes pipeline (1) and pipeline (4) down, its characterized in that: go up the inner wall array of pipeline (1) and be fixed with fixture block (8), and fixture block (8) are located same horizontal plane, the top welding of lower pipeline (4) has connecting pipe (5), and the inner wall swing joint of connecting pipe (5) and last pipeline (1), draw-in groove (9) have been seted up to the surface array of connecting pipe (5), and draw-in groove (9) and fixture block (8) block each other, the surface of last pipeline (1) is equipped with sleeve pipe (3), and sleeve pipe (3) and lower pipeline (4) surface threaded connection.

2. The temperature and pressure resistant quick connect assembly for downhole perforation of claim 1, wherein: the surface of the upper pipeline (1) is fixed with limiting plates (2), a sleeve (3) is arranged between the limiting plates (2), and the sleeve (3) is movably connected with the upper pipeline (1).

3. The temperature and pressure resistant quick connect assembly for downhole perforation of claim 1, wherein: the top of lower pipeline (4) is equipped with reset spring (7), and the bottom of reset spring (7) and the top fixed connection of lower pipeline (4), and the surperficial swing joint of reset spring (7) and connecting pipe (5), the top of reset spring (7) is fixed with sealing ring (6), and sealing ring (6) and connecting pipe (5) swing joint.

4. The temperature and pressure resistant quick connect assembly for downhole perforation of claim 3, wherein: the diameter of the reset spring (7) is equal to that of the lower pipeline (4), and the reset spring (7) is formed by stainless steel stretching and polishing.

5. The temperature and pressure resistant quick connect assembly for downhole perforation of claim 3, wherein: the sealing ring (6) is formed by thermoplastic rubber, and the inner diameter of the sealing ring (6) is equal to the diameter of the connecting pipe (5).

6. The temperature and pressure resistant quick connect assembly for downhole perforation of claim 1, wherein: the diameter of the upper pipeline (1) is equal to that of the lower pipeline (4), and the inner diameter of the sleeve (3) is equal to that of the outer diameter of the upper pipeline (1).