CN218716734U

CN218716734U - Pressure kettle for sealing test of oil-gas well cement sheath

Info

Publication number: CN218716734U
Application number: CN202221685635.6U
Authority: CN
Inventors: 李海鹏; 邓永刚; 赵海建; 郭志艳
Original assignee: Tianjin Haoren Oilfield Technical Service Co ltd
Current assignee: Tianjin Haoren Oilfield Technical Service Co ltd
Priority date: 2022-07-01
Filing date: 2022-07-01
Publication date: 2023-03-24
Anticipated expiration: 2032-07-01

Abstract

The utility model relates to an oil gas resource development technical field just discloses an oil gas well cement sheath is reation with pressure vessel for sealing, including device case and apron, the inside of device case forms airtight space with the apron, the inside fixed mounting of device case has the test box, the inner wall of test box is provided with the cement sheath, the inside of cement sheath is provided with the sleeve pipe, the pneumatic cylinder is installed to the inside wall symmetry of device case, the output fixedly connected with push pedal of pneumatic cylinder, one side fixed mounting of push pedal has a plurality ofly the closing plate. The utility model discloses a be provided with a plurality of closing plates, can fall into a plurality of experimental chambeies to the test box through the closing plate, then fill into different pressure toward every experimental intracavity through shunt tubes and second valve, can observe the cement sheath simultaneously and produce cracked time under different pressures to can be faster obtain the experimental result, improve the efficiency of experiment.

Description

Pressure kettle for sealing test of oil-gas well cement sheath

Technical Field

The utility model relates to an oil gas resource development technical field specifically is an oil gas well cement sheath is reation with reation pressure kettle.

Background

In well cementation construction, cement slurry is injected into an annular space between a casing and a stratum, and is subjected to a downhole environment to be finally solidified to form a cement sheath with certain cementing capacity and hardness. However, the well conditions are often changed due to construction and other reasons, so that the stress state of the cement sheath is changed, the cement sheath is cracked, the packing effect of the cement sheath is ineffective, the channeling between underground oil, gas and water layers and the corrosion damage of a casing are caused, and the oil, gas and well are discarded in severe cases. Therefore, the development of the evaluation research on the sealing integrity of the cement sheath has important significance for determining the production measures of the oil-gas well and prolonging the life cycle.

The utility model provides a notice number is CN 209875145U's utility model provides an oil gas well cement sheath sealing integrity testing arrangement, through the clearance between annular sealing bag ring sealing cement sheath and the upper end cover, annular sealing bag atmospheric pressure adjustment is convenient, sealed equipment is simple, and can audio-visually judge sealed situation through pressure, through the sealed effect of increase pressure reinforcing, in the pressure test to the cement sheath, need compare the dead time of cement sheath under different pressures, current testing arrangement needs one to experiment, efficiency is lower.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

In order to solve the above problems in the prior art, the utility model provides an oil gas well cement sheath is reation with reation kettle.

(II) technical scheme

In order to achieve the above purpose, the utility model discloses a main technical scheme: the utility model provides an oil gas well cement sheath is pressure cauldron for sealing test, includes device case and apron, the inside of device case forms airtight space with the apron, the inside fixed mounting of device case has the test box, the inner wall of test box is provided with the cement sheath, the inside of cement sheath is provided with the sleeve pipe, the pneumatic cylinder is installed to the inside wall symmetry of device case, the output fixedly connected with push pedal of pneumatic cylinder, one side fixed mounting of push pedal has a plurality ofly the closing plate, the side surface symmetry of test box is provided with a plurality ofly the movable groove, closing plate and movable groove swing joint, the mounting groove has all been seted up to the inboard top of movable groove and inboard bottom, the inside of mounting groove is provided with the sealed bag, the sealed bag contacts with the closing plate, one side of test box is provided with the delivery header, the side surface of delivery header is provided with a plurality ofly carry the branch pipe, the other end of carrying the branch pipe is connected with the sealed bag, one side of test box is provided with the forcing pipe, the side surface fixed mounting of forcing pipe has a plurality ofly the shunt tubes, the other end of shunt tubes communicates with the inside of test box.

Preferably, one side of the sealing plate is completely attached to the side surface of the cement sheath.

Preferably, the sealing plates on the two sides are symmetrically arranged and mutually clamped.

Preferably, a first valve is fixedly arranged on the side surface of the conveying main pipe.

Preferably, a second valve is installed on a side surface of each of the plurality of shunt tubes.

Preferably, the bottom of the cover plate is fixedly provided with a mounting column, and the side surface of the mounting column is fixedly provided with a plurality of detection probes.

Preferably, the controller is fixedly installed on the front surface of the device case.

(III) advantageous effects

The utility model provides an oil gas well cement sheath is reation with reation pressure kettle. The method has the following beneficial effects:

(1) Through being provided with a plurality of closing plates, can fall into a plurality of experimental chambeies to the test box through the closing plate, then fill into different pressure toward every experimental intracavity through shunt tubes and second valve, can observe the cement sheath simultaneously and produce fissured time under different pressure to can be faster obtain the experimental result, improve the efficiency of experiment, through being provided with a plurality of test probe, can detect a plurality of experimental chambeies simultaneously, improve the accuracy that detects.

(2) Through being provided with mounting groove and sealed bag, can improve the degree of tightness in every experimental cavity, prevent that the clearance of closing plate and activity groove from leaking gas, after the closing plate block butt joint on both sides, aerify a plurality of sealed bags through carrying the branch pipe, the inflation of sealed bag can block up sealed to the clearance of closing plate and activity groove, has improved the accuracy of experiment.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the internal structure of the present invention;

FIG. 3 is a schematic view of the internal structure of the test box of the present invention;

fig. 4 is a schematic view of the internal structure of the middle sleeve of the present invention;

fig. 5 is a cross-sectional view of the sealing plate of the present invention.

In the figure: 1. a device case; 2. a test box; 3. a cement sheath; 4. a sleeve; 5. a cover plate; 6. a hydraulic cylinder; 7. pushing a plate; 8. sealing plates; 9. a movable groove; 10, installing a groove; 11. sealing the bag; 12. conveying branch pipes; 13. a delivery main pipe; 14. a first valve; 15. a shunt tube; 16. a second valve; 17. a pressurizing pipe; 18. mounting a column; 19. detecting a probe; 20. and a controller.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1-4, the utility model provides an oil gas well cement sheath seals test with reation kettle technical scheme: the utility model provides an oil gas well cement sheath is reation kettle for sealing test, including device case 1 and apron 5, the inside of device case 1 forms airtight space with apron 5, the inside fixed mounting of device case 1 has test box 2, the inner wall of test box 2 is provided with cement sheath 3, the inside of cement sheath 3 is provided with sleeve pipe 4, pneumatic cylinder 6 is installed to the inside wall symmetry of device case 1, the output fixedly connected with push pedal 7 of pneumatic cylinder 6, one side fixed mounting of push pedal 7 has a plurality of closing plates 8, the side surface symmetry of test box 2 is provided with a plurality of movable grooves 9, closing plate 8 and movable groove 9 swing joint, mounting groove 10 has all been seted up to movable groove 9 inboard top and inboard bottom, the inside of mounting groove 10 is provided with sealed bag 11, sealed bag 11 contacts with closing plate 8, after the closing plate 8 block butt joint on both sides, inflate a plurality of sealed bag 11 through carrying branch pipe 12, sealed bag 11 inflates, can block up the clearance of closing plate 8 with movable groove 9, one side of test box 2 is provided with carry house steward 13, the side surface of carrying house 13 is provided with a plurality of carrying branch pipe 12, one side surface of the other end and sealed bag is provided with the inside 15 of the test box 15 of shunt tubes and the pressurized tube 15 intercommunication of the test box 2.

Preferably, as the technical solution, one side of the sealing plate 8 is completely attached to the side surface of the cement sheath 3, the sealing plates 8 at both sides are symmetrically arranged and are engaged with each other, as shown in fig. 5, the edge of the sealing plate 8 at one side is convex, the edge of the sealing plate 8 at the other side is concave, the sealing plate 8 is sealed by the engagement of the convex and the concave, a plurality of sealing gaskets are further arranged between the convex and the concave, the sealing effect can be further enhanced, and the sealing gaskets are also arranged between one side of the sealing plate 8 and the side surface of the cement sheath 3, so that the sealing effect between one side of the sealing plate 8 and the side surface of the cement sheath 3 is better.

Preferably, a first valve 14 is fixedly installed on a side surface of the delivery manifold 13, and the control delivery manifold 13 can inflate the sealing bag 11.

Preferably, the second valves 16 are installed on the side surfaces of the plurality of branch pipes 15, so as to control the pressure in the plurality of experimental chambers.

Preferably, the mounting column 18 is fixedly mounted at the bottom of the cover plate 5, the plurality of detection probes 19 are fixedly mounted on the side surface of the mounting column 18, and the plurality of detection probes 19 are arranged, so that a plurality of experimental cavities can be detected simultaneously, and the detection accuracy is improved.

Preferably, the controller 20 is fixedly mounted on the front surface of the apparatus box 1, and the controller 20 is electrically connected to the hydraulic cylinder 6, the first valve 14, the second valve 16, and the detection probe 19.

The working principle is as follows: open apron 5, put into the inside of test box 2 cement sheath 3 and sleeve pipe 4, cover apron 5, make erection column 18 and test probe 19 be located sleeve pipe 4's inside, the inside of device case 1 forms airtight space with apron 5, it is sealed to drive push pedal 7 through electronic jar and remove the closing plate 8 block of each other who makes both sides, also form a plurality of airtight spaces with cement sheath 3, then fill into different pressure toward every experiment intracavity through shunt tubes 15 and second valve 16, can observe cement sheath 3 simultaneously and produce the cracked time under different pressures, thereby can be faster obtain the experimental result, improve the efficiency of experiment.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation. The use of the phrase "comprising one of the elements does not exclude the presence of other like elements in the process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an oil gas well cement sheath is reation kettle for sealing, includes device case (1) and apron (5), its characterized in that: the device comprises a device box (1), a cover plate (5), a test box (2), a cement ring (3), a sleeve (4), hydraulic cylinders (6), a push plate (7) and a push plate (7), wherein the inner wall of the test box (2) is fixedly provided with the cement ring (3), the inner part of the cement ring (3) is provided with the sleeve (4), the inner side wall of the device box (1) is symmetrically provided with the hydraulic cylinders (6), the output end of the hydraulic cylinder (6) is fixedly connected with the push plate (7), one side of the push plate (7) is fixedly provided with a plurality of sealing plates (8), the side surface of the test box (2) is symmetrically provided with a plurality of movable grooves (9), the sealing plates (8) are movably connected with the movable grooves (9), the top of the inner side of each movable groove (9) is provided with a mounting groove (10) and the bottom of the inner side, the inside of the mounting groove (10) is provided with a sealing bag (11), the sealing bags (11) are in contact with the sealing plates (8), one side of the test box (2) is provided with a conveying main pipe (13), the side surface of the conveying main pipe (13) is provided with a plurality of conveying branch pipes (12), the other end of the conveying main pipe (12) is connected with the sealing bag (11), one side surface of the testing box (2), one side surface of the testing box (17) is provided with a plurality of a pressurizing pipe (17), the other end of the shunt pipe (15) is communicated with the interior of the test box (2).

2. The autoclave for testing the sealing of cement sheath in oil and gas well according to claim 1, wherein: one side of the sealing plate (8) is completely attached to the side surface of the cement sheath (3).

3. The autoclave for testing the sealing of cement sheath in oil and gas well according to claim 2, wherein: the sealing plates (8) on the two sides are symmetrically arranged and mutually clamped.

4. The autoclave for testing the sealing of cement sheath in oil and gas well according to claim 3, wherein: and a first valve (14) is fixedly arranged on the side surface of the conveying main pipe (13).

5. The autoclave for testing the sealing of cement sheath in oil and gas well according to claim 4, wherein: the side surfaces of a plurality of shunt tubes (15) are all provided with a second valve (16).

6. The autoclave for testing the sealing of cement sheath in oil and gas well according to claim 5, wherein: the bottom fixed mounting of apron (5) has erection column (18), the side surface fixed mounting of erection column (18) has a plurality of test probe (19).

7. The autoclave for testing the sealing of cement sheath in oil and gas well according to claim 6, wherein: the front surface of the device box (1) is fixedly provided with a controller (20).