Rapid testing device for pressure bearing and dissolution of soluble rubber cylinder

Abstract

The invention relates to the technical field of oil field oil production engineering, in particular to a soluble rubber cylinder pressure-bearing and dissolution rapid inspection device which comprises an upper connector, the top end of the upper connector is connected with a connector of a pressurizing pump, the lower end of the upper connector is connected with a pushing body, a simulation sleeve is installed between the upper connector and the pushing body, and the lower end of the pushing body is connected with a central pipe and an upper connecting body. The central pipe is connected with the upper connector, the lower end of the upper connector is connected with the rubber sleeve assembly, the lower end of the rubber sleeve assembly is connected with the adjustable push-down bodies, the adjustable push-down body at the tail end is connected with the simulation sleeve, the lower end of the simulation sleeve is connected with the real-time locking ring, the inner side of the real-time locking ring is detachably connected with the central pipe, and the pressurizing pump starts pressurizing through the pressing connector. The pushing body is pushed by the pressure of the pressurizing pump to move forwards, the pushing body drives the central pipe to move, the central pipe compresses the rubber sleeve assembly, the real-time locking ring is screwed in synchronously, and the central pipe is locked by the real-time locking ring. The device provided by the invention is simple in structure and convenient to operate, the test time is saved, and the detection efficiency is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of oil field production engineering, in particular to a soluble glue tube pressure bearing and dissolution rapid testing device. Background Art

[0002] With the deepening of exploration and development, the scale of application of oil and gas well fracturing measures is becoming larger and larger. In order to improve production efficiency, the application of downhole soluble fracturing tools has received attention. In actual production, on the one hand, the key point of soluble tools lies in the solubility of the material. The solubility performance of the rubber cartridge needs to be tested before the tool is lowered into the well; on the other hand, the packer plays a vital role as a core tool in the fracturing construction process, and its sealing performance is mainly determined by the pressure-bearing performance index of the rubber cartridge.

[0003] In order to improve the efficiency and safety of on-site construction and avoid problems such as damage to the packer rubber sleeve and jamming of the pipe string during on-site construction, it is also necessary to test the pressure-bearing performance of the rubber sleeve components in the packer in advance. The conventional detection method first uses a temperature resistance detection device to oil-immerse the rubber sleeve to detect the temperature resistance index of the rubber sleeve. After the oil immersion, a pressure-bearing detection device is used to test the sealing and pressure-bearing performance indicators of the rubber sleeve. The disassembly and assembly of the rubber sleeve is complicated and the detection time is long. In addition, when testing the solubility performance of the rubber sleeve, how to better approach the actual working state underground is the key to testing the solubility performance of the rubber sleeve. Therefore, in response to the above shortcomings, the present invention provides a soluble rubber sleeve pressure and dissolution rapid testing device. Summary of the Invention

[0004] The purpose of the present invention is to provide a device for quickly testing the pressure bearing and dissolution of a soluble rubber cylinder. In order to solve the problem in the prior art that two different devices are required for the pressure bearing and dissolution performance tests of the fracturing packer rubber cylinder, the disassembly process is time-consuming and labor-intensive. At the same time, since the rubber cylinder cannot be guaranteed to be in a compressed working state during the dissolution performance test, the test time is long, the detection efficiency is low, and the detection authenticity is poor.

[0005] In order to achieve the above-mentioned object, the present invention provides a soluble rubber tube pressure-bearing and dissolving rapid testing device, comprising: An upper joint, the top end of the upper joint is connected to a joint of a pressure pump, the lower end of the upper joint is connected to a push body, a simulation sleeve is installed between the upper joint and the push body, the lower end of the push body is connected to a center tube and an upper connector, the center tube is connected to the upper connector, the lower end of the upper connector is connected to a rubber cylinder assembly, the lower end of the rubber cylinder assembly is connected to a plurality of adjustable lower push bodies, the adjustable lower push body at the tail end is connected to a simulation sleeve, the lower end of the simulation sleeve is connected to a real-time locking ring, the inner side of the real-time locking ring is connected to the center tube; The pressure pump starts pressure injection through the pressure connector. The pressure of the pressure pump pushes the push body forward. The push body drives the center tube to move. The center tube compresses the rubber cylinder assembly. The real-time locking ring is screwed in synchronously. The real-time locking ring locks the center tube.

[0006] Preferably, the lower end of the upper joint is connected to the simulated casing through a threaded connection.

[0007] Preferably, the push body seals the simulated sleeve via a first sealing ring.

[0008] Preferably, the upper joint seals the simulated casing via a second sealing ring.

[0009] Preferably, the inner side of the rubber cylinder assembly is a central tube, and the inner side of the adjustable push-down body is a central tube.

[0010] Preferably, a holder is provided at the top end of the central tube, the holder is provided with threads, and the central tube is connected to the connector via the threads.

[0011] Preferably, the rubber cylinder assembly includes multiple rubber cylinders and multiple intermediate spacer rings, the number of the rubber cylinders is one more than the number of the intermediate spacer rings, the multiple rubber cylinders are connected, and the middle of every two rubber cylinders is separated by an intermediate spacer ring, and the bottom end of the rubber cylinder at the tail end is connected to an adjustable push-down body.

[0012] Preferably, the real-time locking ring is connected to the central tube via threads.

[0013] The present invention provides a soluble rubber tube pressure-bearing and dissolving rapid testing device with the following beneficial effects: The soluble rubber cartridge pressure-bearing and dissolution rapid testing device provided by the present invention is used to detect the quality and working performance of the compression packer rubber cartridge under the real and complex working conditions of fracturing construction. The device has a simple structure, small size, and easy operation. It is close to the actual working state underground, saving testing time, improving detection efficiency, and reducing the number of detection devices. The functions of rubber cartridge pressure-bearing and solubility index detection are integrated into an integrated design. The rubber cartridge can be immersed in different media. After the pressure index is detected, the dissolution effect of the rubber cartridge can be quickly detected, providing effective protection for fracturing construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic structural diagram of a device for quickly testing the pressure-bearing and dissolving soluble glue cartridge according to an embodiment of the present invention.

[0015] Legend: 1-upper joint; 2-first sealing ring; 3-second sealing ring; 4-push body; 5-upper connector; 6-center tube; 7-rubber cylinder assembly; 8-simulated sleeve; 9-middle spacer ring; 10-adjustable lower push body; 11-real-time locking ring. DETAILED DESCRIPTION

[0016] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0017] Figure 1 This is a schematic diagram of the structure of the pressure-bearing and dissolving rapid testing device for the soluble glue tube according to the embodiment of the present invention, referring to Figure 1 The present invention provides a soluble rubber tube pressure-bearing and dissolving rapid testing device, comprising: The upper joint 1, the top of the upper joint 1 is connected to the joint of the pressure pump, the lower end of the upper joint 1 is connected to the push body 4, a simulation sleeve 8 is installed between the upper joint 1 and the push body 4, the lower end of the push body 4 is connected to the center tube 6 and the upper connector 5, the center tube 6 is connected to the upper connector 5, the lower end of the upper connector 5 is connected to the rubber cylinder assembly 7, the lower end of the rubber cylinder assembly 7 is connected to multiple adjustable lower push bodies 10, the adjustable lower push body 10 at the tail end is connected to the simulation sleeve 8, the lower end of the simulation sleeve 8 is connected to the real-time locking ring 11, the inner side of the real-time locking ring 11 is connected to the center tube 6.

[0018] In actual application, the pressure pump starts pressure through the pressure joint. The pressure of the pressure pump pushes the push body 4 forward, and the push body 4 drives the center tube 6 to move. The center tube 6 compresses the rubber cylinder assembly 8, and the real-time locking ring 11 is synchronously screwed in to lock the center tube 6.

[0019] In this inspection device, the lower end of the upper joint 1 is connected to the simulated sleeve 8 through a thread, and the upper joint 1 seals the simulated sleeve 8 through the second sealing ring 3. In addition, the push body 4 seals the simulated sleeve 8 through the first sealing ring 2.

[0020] In actual application, the inner side of the rubber cylinder assembly 7 is the center tube 6, the inner side of the adjustable push-down body 10 is the center tube 6, and the real-time locking ring 11 is connected to the center tube 6 through a thread. In this inspection device, a socket is provided at the top of the center tube 6, and the socket is provided with a thread. The center tube 6 is connected to the upper connector 5 through a thread.

[0021] In this inspection device, the rubber cylinder assembly 7 includes multiple rubber cylinders and multiple intermediate spacer rings 9. The number of rubber cylinders is one more than the number of intermediate spacer rings 9. The multiple rubber cylinders are connected, and the middle of every two rubber cylinders is separated by an intermediate spacer ring 9. The bottom end of the rubber cylinder at the tail end is connected to an adjustable push-down body 10.

[0022] In actual application, the upper joint 1 is connected to the joint of the pressure pump through a thread, and the pressure pump performs a pressure operation on the inspection device. The detection of the rubber cylinder assembly 7 is adapted by controlling the number of adjustable lower push bodies 10. It should be noted that because the rubber cylinder assembly 7 includes multiple rubber cylinders, the number of rubber cylinders is selected according to actual conditions and there is no clear quantity limit. Therefore, the length specification of the rubber cylinder assembly 7 is a variable specification, and it is necessary to control the number of adjustable push bodies 10 to assist in detection.

[0023] In order to test the quality and working performance of fracturing packer rubber cartridges under complex downhole working conditions, ensure that the packer rubber cartridges meet the requirements of on-site application before entering the fracturing construction site, and improve the construction success rate, the present invention provides a soluble rubber cartridge pressure bearing and dissolution rapid testing device. This testing device is designed as an integrated compression rubber cartridge rapid testing device with a simple structure and convenient operation. It is close to the actual downhole working conditions, can improve the testing efficiency, and reduce the number of testing devices. The working principle of this soluble rubber cartridge pressure bearing and dissolution rapid testing device is described in detail below: In this embodiment, the inspection device is mainly composed of an upper joint 1, a sealing ring 2, a sealing ring 3, a push body 4, an upper connector 5, a center tube 6, a rubber cylinder 7, a simulated sleeve 8, a middle spacer ring 9, an adjustable lower push body 10 and a real-time locking ring 11.

[0024] In actual application, the top of the upper joint 1 is connected to the joint of the pressure pump, the lower end of the upper joint 1 is connected to the push body 4, a simulation sleeve 8 is installed between the upper joint 1 and the push body 4, the lower end of the upper joint 1 is connected to the simulation sleeve 8 through a thread, the upper joint 1 seals the simulation sleeve 8 through the second sealing ring 3, the push body 4 seals the simulation sleeve 8 through the first sealing ring 2, the lower end of the push body 4 is connected to the center tube 6 and the upper connector 5, the top of the center tube 6 is provided with a card seat, the card seat is provided with a thread, the center tube 6 is connected to the upper connector 5 through a thread, and the upper connector The lower end of the body 5 is connected to the rubber cylinder assembly 7, the inner side of the rubber cylinder assembly 7 is the center tube 6, the inner side of the adjustable push-down body 10 is the center tube 6, the rubber cylinder assembly 7 includes multiple rubber cylinders and multiple intermediate spacer rings 9, multiple rubber cylinders are connected, and the middle of each two rubber cylinders is separated by an intermediate spacer ring 9, the bottom end of the rubber cylinder at the tail end is connected to multiple adjustable push-down bodies 10, the adjustable push-down body 10 at the tail end is connected to the simulation sleeve 8, the lower end of the simulation sleeve 8 is connected to the real-time locking ring 11, and the inner side of the real-time locking ring 11 is connected to the center tube 6 through a thread.

[0025] In this embodiment, the inspection device is connected to the pressure pump, and the connector of the pressure pump is threadedly connected to the upper connector 1 through the oil pipe buckle. The pressure pump is started through the connector of the pressure pump. It should be noted that during pressure pumping, it is necessary to pressurize according to the design pressure value. The pressure provided by the pressure pump pushes the push body 4 forward, and the push body 4 drives the center tube 6 to move and compress the rubber cylinder assembly 7. The real-time locking ring lock 11 is synchronously screwed in at the same time. The real-time locking ring 11 further locks the position of the center tube 6, thereby ensuring that after pressure relief, the rubber cylinder assembly 7 is still in a sealed state, which is convenient for the solubility test of the rubber cylinder assembly 7 simulating the working state. After the pressure is in place, the threaded connection between the pressure pump and the detection device is removed.

[0026] The soluble rubber cartridge pressure-bearing and dissolution rapid testing device provided by the present invention is used to detect the quality and working performance of the compression packer rubber cartridge under the real and complex working conditions of fracturing construction. The device has a simple structure, small size, and easy operation. It is close to the actual working state underground, saving testing time, improving detection efficiency, and reducing the number of detection devices. The functions of rubber cartridge pressure-bearing and solubility index detection are integrated into an integrated design. The rubber cartridge can be immersed in different media. After the pressure index is detected, the dissolution effect of the rubber cartridge can be quickly detected, providing effective protection for fracturing construction.

[0027] 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 scope of protection of the present invention.

Claims

1. A soluble rubber tube pressure-bearing and dissolving rapid testing device, characterized by: include: An upper joint (1), the top end of the upper joint (1) is connected to a joint of a pressure pump, the lower end of the upper joint (1) is connected to a push body (4), a simulation sleeve (8) is installed between the upper joint (1) and the push body (4), the lower end of the push body (4) is connected to a central tube (6) and an upper connector (5), the central tube (6) is connected to the upper connector (5), the lower end of the upper connector (5) is connected to a rubber cylinder assembly (7), the lower end of the rubber cylinder assembly (7) is connected to a plurality of adjustable lower push bodies (10), the adjustable lower push body (10) at the tail end is connected to a simulation sleeve (8), the lower end of the simulation sleeve (8) is connected to a real-time locking ring (11), and the inner side of the real-time locking ring (11) is connected to the central tube (6); The pressure pump starts pressure injection through the pressure connector, and the pressure of the pressure pump pushes the push body (4) forward, and the push body (4) drives the central tube (6) to move, and the central tube (6) compresses the rubber cylinder assembly (7), and the real-time locking ring (11) is screwed in synchronously, and the real-time locking ring (11) locks the central tube (6).

2. The soluble rubber tube pressure-bearing and dissolving rapid testing device according to claim 1, characterized in that: The lower end of the upper joint (1) is connected to the simulation casing (8) via a threaded connection.

3. The soluble rubber tube pressure-bearing and dissolving rapid testing device according to claim 2, characterized in that: The push body (4) seals the simulated sleeve (8) via the first sealing ring (2).

4. The soluble rubber tube pressure-bearing and dissolving rapid testing device according to claim 1, characterized in that: The upper joint (1) seals the simulated casing (8) via a second sealing ring (3).

5. The soluble rubber tube pressure-bearing and dissolving rapid testing device according to claim 1, characterized in that: The inner side of the rubber cylinder assembly (7) is the central tube (6), and the inner side of the adjustable push-down body (10) is the central tube (6).

6. The soluble rubber tube pressure-bearing and dissolving rapid testing device according to claim 5, characterized in that: A clamping seat is provided at the top end of the central tube (6), and the clamping seat is provided with threads, and the central tube (6) is connected to the upper connector (5) via the threads.

7. The soluble rubber tube pressure-bearing and dissolving rapid testing device according to claim 5, characterized in that: The rubber cylinder assembly (7) includes a plurality of rubber cylinders and a plurality of intermediate spacer rings (9), wherein the number of the rubber cylinders is one more than the number of the intermediate spacer rings (9), the plurality of rubber cylinders are connected, and the middle of each two rubber cylinders is separated by an intermediate spacer ring (9), and the bottom end of the rubber cylinder at the tail end is connected to an adjustable push-down body (10).

8. The soluble rubber tube pressure-bearing and dissolving rapid testing device according to claim 1, characterized in that: The real-time locking ring (11) is connected to the central tube (6) via threads.

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