CN219220361U

CN219220361U - Pressure testing device for well cementing tool

Info

Publication number: CN219220361U
Application number: CN202320725402.2U
Authority: CN
Inventors: 陈方涛
Original assignee: Shandong Lizhijie Petroleum Technology Service Co ltd
Current assignee: Shandong Lizhijie Petroleum Technology Service Co ltd
Priority date: 2023-04-05
Filing date: 2023-04-05
Publication date: 2023-06-20
Anticipated expiration: 2033-04-05

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 tube body, wherein a positioning inner groove I is formed in the pressure testing tube body, a top cover is arranged on one side of the pressure testing tube body, a positioning inner groove II matched with one end of the pressure testing tube body is formed in the top cover, the well cementation tool is arranged on one side of a pressure cap, a sealing sleeve matched with the positioning inner groove I is connected to the outside of the well cementation tool, a sealing assembly is arranged in the positioning inner groove I, and the sealing assembly comprises: the sealing elastic bag is arranged in the first positioning inner groove; the inflator pump is arranged on the pressure test tube body; the positioning shafts are uniformly arranged on the sealed elastic bag; the connecting sleeve is used for connecting the first locating inner groove and is arranged on the locating shaft. According to the utility model, the sealing assembly is arranged, so that the inflation amount in the sealed elastic bag is flexibly adjusted, the sealing applicability is improved, and the overall use effect is improved.

Description

Pressure testing device for well cementing tool

Technical Field

The utility model relates to the technical field of well cementation, in particular to a pressure testing device for a well cementation tool.

Background

Cementing, setting a casing into the well, and injecting cement into an annular space between the well bore and the casing. Is an essential link in the process of drilling and completing well, and comprises casing running and cementing;

through retrieving publication number CN212932227U, a pressure testing device for a cementing tool is disclosed.

The technical scheme comprises the following steps: the device comprises a device main body, a well cementing tool, a first annular groove, a second annular groove, a third annular groove, a top cover and a sealing ring, wherein a cavity is formed in the device main body; one end of the compression joint is fixedly connected with the compression cap, the other end of the compression joint is connected with the sealing sleeve arranged in the second annular groove and the well cementation tool in the cavity, the outer wall of the compression joint is connected with the first annular groove through trapezoidal threads, the side wall of the sealing sleeve is provided with an annular groove, and the sealing ring is positioned in the annular groove; the press cap is provided with an observation hole facing the well cementing tool; however, when the diameters of different cementing tools are different, a certain gap exists between the sealing ring at the joint position and the cementing tool, and the overall suitability is required to be improved.

To this end, we propose a pressure test device for a cementing tool.

Disclosure of Invention

The utility model mainly solves the technical problems in the prior art and provides a pressure testing device for a well cementing tool.

In order to achieve the above purpose, the utility model adopts the following technical scheme that the pressure testing device for the well cementing tool comprises a pressure testing tube body, wherein a positioning inner groove I is formed in the pressure testing tube body, a top cover is arranged on one side of the pressure testing tube body, a positioning inner groove II which is matched with one end of the pressure testing tube body is formed in the top cover, the well cementing tool is arranged on one side of a pressure cap, a sealing sleeve which is matched with the positioning inner groove I is connected to the outside of the well cementing tool, a sealing component is arranged in the positioning inner groove I, and the sealing component comprises:

the sealing elastic bag is arranged in the first positioning inner groove;

the inflator pump is used for inflating the sealed elastic bag and is arranged on the pressure test tube body;

the positioning shafts are uniformly arranged on the sealed elastic bag;

the connecting sleeve is used for connecting the first locating inner groove and is arranged on the locating shaft.

Preferably, the connecting sleeve is sleeved with the positioning shaft.

Preferably, a sealing assembly is also arranged in the positioning inner groove II.

Preferably, a pressure test joint is arranged on one side of the top cover.

Preferably, the elastic spiral ring is arranged in the sealed elastic bag, the elastic spiral ring is in a spiral shape, the inside of the elastic spiral ring is communicated with the inside of the sealed elastic bag, the whole length of the elastic spiral ring is set according to one half of the length of the sealed elastic bag, and the elastic spiral ring can be expanded synchronously and pressed against a corresponding contact surface when inflated in the sealed elastic bag.

Advantageous effects

The utility model provides a pressure testing device for a well cementing tool. The method has the following advantages and improvements: through being provided with seal assembly, well cementation instrument and pressure testing body insert respectively in location inside groove one and the location inside groove two, seal cover and well cementation instrument press close to the inner wall of location inside groove one, and the pressure testing body pastes the inner wall of near location inside groove two, and is synchronous, and the pump inflates to sealed elastic bag inside and makes its inflation, and sealed elastic bag is tight with seal cover and well cementation instrument mutually when expanding, can improve sealed suitability according to seal cover and the nimble volume of adjusting sealed elastic bag inside inflation of well cementation instrument when utilizing sealed elastic bag to seal, and whole result of use improves.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.

FIG. 1 is a schematic perspective view of the structure of the present utility model;

FIG. 2 is a schematic perspective view of a sealed flexible bag in accordance with the present utility model;

FIG. 3 is a schematic perspective view of the agricultural elastic helical coil in the structure of the present utility model.

Legend description:

1. a pressure test tube body; 2. positioning an inner groove I; 3. a top cover; 4. positioning an inner groove II; 5. a pressure test joint; 6. pressing the cap; 7. sealing sleeve; 8. a cementing tool; 9. sealing the elastic bag; 10. an inflator pump; 11. an elastic spiral ring; 12. positioning a shaft; 13. and (5) connecting the sleeve.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

1-3, a pressure testing device for a well cementing tool comprises a pressure testing tube body 1, wherein a positioning inner groove I2 is formed in the pressure testing tube body 1, the cross section of an inner cavity of the positioning inner groove I2 is in a convex shape, a top cover 3 is arranged on one side of the pressure testing tube body 1, a positioning inner groove II 4 matched with one end of the pressure testing tube body 1 is formed in the top cover 3, the cross section of an inner cavity of the positioning inner groove II 4 is in a convex shape, a well cementing tool 8 is arranged on one side of a pressure cap 6, a sealing sleeve 7 matched with the positioning inner groove I2 is connected to the outer part of the well cementing tool 8, a sealing component is arranged in the positioning inner groove I2, and the sealing component comprises a sealing elastic bag 9, an air pump 10, a positioning shaft 12 and a connecting sleeve 13;

the sealing elastic bag 9 is arranged in the positioning inner groove I2, the sealing elastic bag 9 is made of elastic rubber, the sealing elastic bag 9 is of a hollow structure, the cross section of the sealing elastic bag 9 is in a convex shape, and the sealing elastic bag 9 is tightly adhered to the contact surface for sealing when inflated;

the inflator pump 10 for inflating the sealed elastic bag 9 is arranged on the pressure test tube body 1, the inflator pump 10 and the sealed elastic bag 9 are connected with each other through a pipeline, and the inflator pump 10 inflates the inside of the sealed elastic bag 9 to enable the inside of the sealed elastic bag 9 to expand so as to realize further sealing;

the positioning shafts 12 are uniformly arranged on the sealed elastic bag 9;

the connecting sleeve 13 for connecting the positioning inner groove I2 is arranged on the positioning shaft 12, the connecting sleeve 13 is sleeved with the positioning shaft 12, and the positioning shaft 12 and the connecting sleeve 13 are matched to position the sealing elastic bag 9 when expanding;

through being provided with seal assembly, cementing tool 8 and pressure testing body 1 insert respectively in location inside groove one 2 and the location inside groove two 4, seal cover 7 and cementing tool 8 press close to the inner wall of location inside groove one 2, pressure testing body 1 press close to the inner wall of location inside groove two 4, in step, pump 10 inflates to sealed elastic bag 9 inside and makes its inflation, seal elastic bag 9 is closely with seal cover 7 and cementing tool 8 each other when expanding, can improve sealed suitability according to seal cover 7 and the inside air charge volume of cementing tool 8 flexible adjustment sealed elastic bag 9 when utilizing sealed elastic bag 9 to seal, the overall result of use improves.

Furthermore, a sealing component is also arranged in the positioning inner groove II 4, and the sealing component in the positioning inner groove II 4 can seal at the contact surface position of the pressure test tube body 1 and the positioning inner groove II 4.

Further, one side of the top cover 3 is provided with a pressure test connector 5, and the pressure test connector 5 is used for connecting an external pressure test line.

Further, the inside of sealed elastic bag 9 is provided with elasticity helicoidal circle 11, and elasticity helicoidal circle 11 is the heliciform, and the inside of elasticity helicoidal circle 11 communicates each other with the inside of sealed elastic bag 9, and the whole length of elasticity helicoidal circle 11 sets up according to the half of sealed elastic bag 9 length, can make elasticity helicoidal circle 11 synchronous expansion and compress tightly each other with the contact surface that corresponds when inflating to sealed elastic bag 9 inside, and the seal effect of sealed elastic bag 9 and contact surface position is further improved to the pasting of heliciform elasticity helicoidal circle 11 in the junction position.

The working principle of the utility model is as follows: the well cementing tool 8 and the pressure testing tube body 1 are respectively inserted into the first positioning inner groove 2 and the second positioning inner groove 4, the sealing sleeve 7 and the well cementing tool 8 are close to the inner wall of the first positioning inner groove 2, the pressure testing tube body 1 is close to the inner wall of the second positioning inner groove 4, the inflator pump 10 is synchronous to inflate the sealing elastic bag 9 to expand, the sealing elastic bag 9 is tightly adhered to the sealing sleeve 7 and the well cementing tool 8 when inflated, and the sealing elastic bag 9 is utilized to seal, so that the inflation quantity inside the sealing elastic bag 9 can be flexibly adjusted according to the sizes of the sealing sleeve 7 and the well cementing tool 8, and the sealing applicability is improved.

Claims

1. The utility model provides a pressure testing device for well cementing tool, includes pressure testing body (1), set up location inside groove one (2) on pressure testing body (1), one side of pressure testing body (1) is provided with top cap (3), set up on top cap (3) with the two (4) of the one end looks adaptation of pressure testing body (1) location inside groove, one side of pressure cap (6) is provided with well cementing tool (8), the external connection of well cementing tool (8) have seal cover (7) with the first (2) looks adaptation of location inside groove, its characterized in that: the inside of the first positioning inner groove (2) is provided with a sealing component, and the sealing component comprises:

the sealing elastic bag (9) is arranged in the positioning inner groove I (2), and the sealing elastic bag (9) is tightly adhered to the contact surface for sealing when inflated;

the inflator pump (10) is used for inflating the sealed elastic bag (9), the inflator pump (10) is arranged on the pressure test tube body (1), and the inflator pump (10) can inflate the sealed elastic bag (9) to realize further sealing;

the positioning shafts (12) are uniformly arranged on the sealing elastic bags (9);

the connecting sleeve (13) is used for connecting the locating inner groove I (2), and the connecting sleeve (13) is arranged on the locating shaft (12).

2. A pressure testing device for a well cementing tool as defined in claim 1, wherein: the connecting sleeve (13) is sleeved with the positioning shaft (12).

3. A pressure testing device for a well cementing tool as defined in claim 1, wherein: and a sealing component is also arranged in the positioning inner groove II (4).

4. A pressure testing device for a well cementing tool as defined in claim 1, wherein: one side of the top cover (3) is provided with a pressure test joint (5).

5. A pressure testing device for a well cementing tool as defined in claim 1, wherein: the inside of sealed elastic bag (9) is provided with elasticity helicoidal circle (11), and elasticity helicoidal circle (11) are the heliciform, and the inside of elasticity helicoidal circle (11) communicates each other with the inside of sealed elastic bag (9), and the whole length of elasticity helicoidal circle (11) sets up according to the half of sealed elastic bag (9) length, can make elasticity helicoidal circle (11) synchronous inflation and compress tightly each other with the contact surface that corresponds when filling gas to sealed elastic bag (9) inside.