Pressure testing device for well cementation tool

Abstract

The utility model relates to the technical field of well cementation, and discloses a pressure testing device for a well cementation tool, which comprises a pressure testing pipe body, one end of the pressure testing pipe body is fixedly connected with a fixing ring, the side wall of the fixing ring is fixedly connected with a limiting claw I, the side wall of the fixing ring is fixedly connected with a limiting ring I, one side of the pressure testing pipe body is provided with a fixing plate, and the other side of the pressure testing pipe body is provided with a limiting claw II. A first limiting claw is fixedly connected to the side wall of the fixing plate, a second limiting claw is fixedly connected to the side wall of the fixing plate, a second limiting ring is fixedly connected to the side wall of the fixing plate, the first limiting claw is clamped with the second limiting ring, the first limiting ring is clamped with the second limiting claw, and a sealing sleeve is arranged on the side wall of the fixing plate. According to the pressure testing device for the well cementation tool body, through cooperation of the fixing ring, the first limiting claw, the first limiting ring, the fixing plate, the second limiting claw and the second limiting ring, the effect of fixing the well cementation tool body is achieved, and the problem that part of pressure testing devices for the well cementation tool body cannot firmly fix the well cementation tool body is solved; through the structure, the fixing stability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cementing, in particular to a pressure testing device for cementing tools. Background Art

[0002] Cementing tools are a group of equipment and tools used in oilfield, natural gas extraction and groundwater well projects to reinforce well walls, isolate formations, protect pipelines, control well pressure and other purposes. The use of cementing tools can ensure the safety, stability and effective production operation of the wellbore. The pressure test device is an important device in cementing tools and is used for pressure testing operations. The pressure test device can apply pressure to a preset pressure to test the integrity, sealing and pressure resistance of the cementing tool and wellbore system. The purpose of the pressure test is to discover potential problems such as leakage, looseness or defects to ensure the safe operation of the wellbore system.

[0003] A Chinese patent document with a search announcement number of CN219220361U discloses a pressure test device for a cementing tool, comprising a pressure test tube body, a positioning inner groove 1 being provided on the pressure test tube body, a top cover being provided on one side of the pressure test tube body, a positioning inner groove 2 being provided on the top cover and being matched with one end of the pressure test tube body, a cementing tool being provided on one side of a pressure cap, a sealing sleeve being connected to the outside of the cementing tool and being matched with the positioning inner groove 1, a sealing assembly being provided inside the positioning inner groove 1, the sealing assembly comprising: a sealing elastic bag, the sealing elastic bag being arranged inside the positioning inner groove 1; an air pump, the air pump being arranged on the pressure test tube body; a positioning shaft, the positioning shaft being evenly arranged on the sealing elastic bag; and a connecting sleeve, the connecting sleeve for connecting the positioning inner groove 1 being arranged on the positioning shaft.

[0004] Although the above patent improves the applicability of the seal and the overall use effect by providing a sealing component and flexibly adjusting the internal inflation volume of the sealing elastic bag, it does not take into account the problem that the cementing tool body is not firmly fixed by the sealing sleeve pressure test tube. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a pressure test device for cementing tools, aiming to improve the problem that the pressure test device of some cementing tool bodies is not firmly enough to fix the cementing tool body through the sealing sleeve pressure test tube body.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pressure test device for cementing tools, comprising a pressure test tube body, a fixing ring fixedly connected to one end of the pressure test tube body, a limiting claw one fixedly connected to the side wall of the fixing ring, a limiting ring one fixedly connected to the side wall of the fixing ring, a fixing plate is provided on one side of the pressure test tube body, a limiting claw two is fixedly connected to the side wall of the fixing plate, a limiting ring two is fixedly connected to the side wall of the fixing plate, the limiting claw one is engaged with the limiting ring two, the limiting ring one is engaged with the limiting claw two, a sealing sleeve is provided on the side wall of the fixing plate, a cementing tool body is provided inside the sealing sleeve, and a sealing assembly is provided inside the pressure test tube body.

[0007] Furthermore, the sealing assembly includes a sealing ring, an inflation tube and an air pump, the side wall of the sealing ring is fixedly connected to the inside of the pressure test tube body, the side wall of the inflation tube is fixedly connected to the inside of the pressure test tube body, one end of the inflation tube is fixedly connected to the inside of the sealing ring, the side wall of the air pump is fixedly connected to the side wall of the pressure test tube body, and the output end of the air pump is fixedly connected to the other end of the inflation tube.

[0008] Furthermore, a limiting groove is provided inside the pressure test tube body, and a cover plate is slidably connected inside the pressure test tube body.

[0009] Furthermore, the side wall of the cover plate is fixedly connected to the limiting block, and the side wall of the limiting block is slidably connected to the inside of the limiting groove.

[0010] Furthermore, a limiting column is fixedly connected inside the pressure test tube body, and a fixing block 1 is fixedly connected inside the limiting column.

[0011] Furthermore, a clamping block is slidably connected inside the limiting column, a second fixing block is fixedly connected to the upper surface of the clamping block, and a side wall of the clamping block is slidably connected inside the cover plate.

[0012] Furthermore, a spring is sleeved between the second fixing block and a side wall of the fixing block, one end of the spring is fixedly connected to the side wall of the limiting column, and the other end of the spring is fixedly connected to the side wall of the clamping block.

[0013] Furthermore, a pressure test joint is arranged inside the cover plate.

[0014] The utility model has the following beneficial effects:

[0015] 1. In the utility model, the fixing ring, the limit claw 1, the limit ring 1, the fixing plate, the limit claw 2 and the limit ring 2 cooperate to achieve the effect of fixing the cementing tool body, solve the problem that the pressure test device of some cementing tool bodies is not firmly fixed to the cementing tool body through the sealing sleeve pressure test tube body, and the stability of the fixed cementing tool body is improved through the above structure.

[0016] 2. In the utility model, the cover plate is firmly fixed by the cooperation between the limit groove, the cover plate, the limit block, the pressure test joint, the limit column, the fixed block one, the clamping block, the fixed block two and the spring, thereby solving the problem that the pressure test device of some cementing tool bodies is not firmly fixed by the positioning inner groove two and the positioning inner groove one. The stability of the installed cover plate is improved by the above structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A three-dimensional diagram of a pressure testing device for cementing tools proposed by the utility model;

[0018] Figure 2 This is a structural diagram of a sealing ring of a pressure testing device for a cementing tool proposed by the utility model;

[0019] Figure 3 This is a structural diagram of a cover plate of a pressure testing device for a cementing tool proposed by the utility model.

[0020] Legend:

[0021] 1. Pressure test tube body; 2. Fixing ring; 3. Limit claw 1; 4. Limit ring 1; 5. Fixing plate; 6. Limit claw 2; 7. Limit ring 2; 8. Sealing sleeve; 9. Cementing tool body; 10. Sealing ring; 11. Inflatable tube; 12. Air pump; 13. Limit groove; 14. Cover plate; 15. Limit block; 16. Pressure test joint; 17. Limit column; 18. Fixing block 1; 19. Block; 20. Fixing block 2; 21. Spring. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Reference Figure 1 and Figure 2The utility model provides an embodiment: a pressure test device for cementing tools, including a pressure test tube body 1, a fixing ring 2 is fixedly connected to one end of the pressure test tube body 1, a limiting claw 3 is fixedly connected to the side wall of the fixing ring 2, a limiting ring 4 is fixedly connected to the side wall of the fixing ring 2, a fixing plate 5 is arranged on one side of the pressure test tube body 1, a limiting claw 6 is fixedly connected to the side wall of the fixing plate 5, a limiting ring 7 is fixedly connected to the side wall of the fixing plate 5, the limiting claw 3 is engaged with the limiting ring 7, the limiting ring 4 is engaged with the limiting claw 6, and the fixing plate 5 is fixedly connected to the side wall of the fixing plate 5. A sealing sleeve 8 is provided on the side wall of the fixed plate 5, and a cementing tool body 9 is provided inside the sealing sleeve 8. A sealing assembly is provided inside the pressure test tube body 1, and the sealing assembly includes a sealing ring 10, an inflation tube 11 and an air pump 12. The side wall of the sealing ring 10 is fixedly connected to the inside of the pressure test tube body 1, the side wall of the inflation tube 11 is fixedly connected to the inside of the pressure test tube body 1, one end of the inflation tube 11 is fixedly connected to the inside of the sealing ring 10, the side wall of the air pump 12 is fixedly connected to the side wall of the pressure test tube body 1, and the output end of the air pump 12 is fixedly connected to the other end of the inflation tube 11.

[0024] When using the device for work, the operator needs to first place the cementing tool body 9 inside the sealing sleeve 8, and then further place the cementing tool body 9 inside the pressure test tube body 1, and make the limit claw 13 and the limit ring 27 misaligned, and the limit ring 14 and the limit claw 26 misaligned. After completing the above steps, the operator needs to rotate the sealing sleeve 8. As the sealing sleeve 8 rotates, the limit claw 13 will gradually engage with the limit ring 27, and the limit ring 14 will also engage with the limit claw 26. The design of this engaging structure ensures the stability of the cementing tool body 9 in the pressure test tube body 1. Next, the air pump 12 is started to inflate the inside of the sealing ring 10 through the inflation tube 11. When the sealing ring 10 is subjected to air pressure, it will expand and fit tightly to the outer wall of the cementing tool body 9.

[0025] Reference Figure 3 A limiting groove 13 is provided inside the pressure test tube body 1, a cover plate 14 is slidably connected inside the pressure test tube body 1, a limiting block 15 is fixedly connected to the side wall of the cover plate 14, and the side wall of the limiting block 15 is slidably connected inside the limiting groove 13, a limiting column 17 is fixedly connected inside the pressure test tube body 1, a fixed block 18 is fixedly connected inside the limiting column 17, a clamping block 19 is slidably connected inside the limiting column 17, a fixed block 20 is fixedly connected to the upper surface of the clamping block 19, and the side wall of the clamping block 19 is slidably connected inside the cover plate 14, a spring 21 is sleeved on the side wall of the fixed block 20 and the fixed block 18, one end of the spring 21 is fixedly connected to the side wall of the limiting column 17, and the other end of the spring 21 is fixedly connected to the side wall of the clamping block 19, and a pressure test joint 16 is provided inside the cover plate 14.

[0026] During the installation of the cover 14, the limit block 15 connected to the side wall of the limit block 14 is slid into the inside of the limit groove 13, which enables the cover 14 to be accurately positioned at the predetermined position during the installation process, avoiding deviation and shaking during the installation process. Next, when the cover 14 is pressed inward, it will squeeze the block 19, causing the block 19 to slide upward. At the same time, the sliding of the block 19 will squeeze the spring 21, causing it to shrink. Then, when the recessed hole opened inside the cover 14 moves to the bottom of the block 19, the spring 21 will lose pressure and reset, and push the block 19 to move, pushing the block 19 back to its original position, so that it is stuck inside the cover 14, thereby fixing the cover 14.

[0027] Working principle: When the device is used for work, the cementing tool body 9 is placed inside the sealing sleeve 8, and then the cementing tool body 9 is placed inside the pressure test tube body 1, and the limit claw 13 and the limit ring 27 are misaligned, and the limit ring 14 and the limit claw 26 are misaligned. At this time, by rotating the sealing sleeve 8, the limit claw 13 and the limit ring 27 are gradually engaged, and the limit ring 14 and the limit claw 26 are engaged, so that the cementing tool body 9 is fixed. Then, by starting the air pump 12, the inside of the sealing ring 10 is inflated through the inflation pipe 11, and the sealing ring 10 will expand and fit on the cementing tool body 9. The outer wall is sealed. When installing the cover plate 14, the limit block 15 connected to the side wall of the cover plate 14 is slid into the inside of the limit groove 13 and pressed inward. At this time, the cover plate 14 will squeeze the block 19 to make it slide upward, and squeeze the spring 21 to make it contract. When the recessed hole opened in the cover plate 14 moves to the bottom of the block 19, the spring 21 will lose pressure and reset, and push the block 19 to move, and fix it in the inside of the cover plate 14. Finally, the pressure test joint 16 is connected to the pressure test pipeline to perform pressure detection on the cementing tool body 9.

[0028] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A pressure test device for a cementing tool, comprising a pressure test tube (1), characterized in that: One end of the pressure test tube body (1) is fixedly connected to a fixing ring (2), the side wall of the fixing ring (2) is fixedly connected to a limiting claw one (3), the side wall of the fixing ring (2) is fixedly connected to a limiting ring one (4), one side of the pressure test tube body (1) is provided with a fixing plate (5), the side wall of the fixing plate (5) is fixedly connected to a limiting claw two (6), the side wall of the fixing plate (5) is fixedly connected to a limiting ring two (7), the limiting claw one (3) is engaged with the limiting ring two (7), the limiting ring one (4) is engaged with the limiting claw two (6), the side wall of the fixing plate (5) is provided with a sealing sleeve (8), the inside of the sealing sleeve (8) is provided with a cementing tool body (9), and the inside of the pressure test tube body (1) is provided with a sealing component.

2. A pressure testing device for cementing tools according to claim 1, characterized in that: The sealing assembly comprises a sealing ring (10), an air filling tube (11) and an air pump (12); the side wall of the sealing ring (10) is fixedly connected to the inside of the pressure test tube body (1); the side wall of the air filling tube (11) is fixedly connected to the inside of the pressure test tube body (1); one end of the air filling tube (11) is fixedly connected to the inside of the sealing ring (10); the side wall of the air pump (12) is fixedly connected to the side wall of the pressure test tube body (1); and the output end of the air pump (12) is fixedly connected to the other end of the air filling tube (11).

3. A pressure testing device for cementing tools according to claim 1, characterized in that: A limiting groove (13) is provided inside the pressure test tube body (1), and a cover plate (14) is slidably connected inside the pressure test tube body (1).

4. A pressure testing device for cementing tools according to claim 3, characterized in that: The side wall of the cover plate (14) is fixedly connected to the limiting block (15), and the side wall of the limiting block (15) is slidably connected inside the limiting groove (13).

5. A pressure testing device for cementing tools according to claim 4, characterized in that: The pressure test tube body (1) is fixedly connected to a limiting column (17) inside, and the limiting column (17) is fixedly connected to a fixing block 1 (18) inside.

6. A pressure testing device for cementing tools according to claim 5, characterized in that: A clamping block (19) is slidably connected inside the limiting column (17), a second fixing block (20) is fixedly connected to the upper surface of the clamping block (19), and a side wall of the clamping block (19) is slidably connected inside the cover plate (14).

7. A pressure testing device for cementing tools according to claim 6, characterized in that: A spring (21) is sleeved on the side walls of the second fixing block (20) and the first fixing block (18); one end of the spring (21) is fixedly connected to the side wall of the limiting column (17), and the other end of the spring (21) is fixedly connected to the side wall of the clamping block (19).

8. A pressure testing device for cementing tools according to claim 3, characterized in that: A pressure test joint (16) is arranged inside the cover plate (14).

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