A metal seal mechanism performance detection device

Abstract

The application relates to the technical field of oil and gas exploitation equipment, in particular to a metal sealing mechanism performance detection device, which aims to solve the problem that the existing detection equipment cannot detect the performance of the sealing element of metal material. The device comprises a setting performance detection assembly and an air tightness performance detection assembly; the setting performance detection assembly can apply pressure to the metal sealing mechanism, so that the metal sealing mechanism changes from a communication state to a setting state; the air tightness performance detection assembly can heat the metal sealing mechanism at high temperature and inject high-temperature and high-pressure gas into the left end and the right end of the metal sealing mechanism respectively, and the air tightness of the metal sealing mechanism is determined by observing whether the high-temperature and high-pressure gas leaks to the other side; the method can accurately judge the air tightness performance of the sealing element and provide data support for subsequent design improvement and product verification.

Description

Technical Field

[0001] This invention relates to the field of oil and gas extraction equipment technology, and in particular to a performance testing device for a metal sealing mechanism. Background Technology

[0002] Packers are crucial tools in downhole operations, with a wide range of applications across all stages of oil and gas well exploration and development. The sealing element is the core component of the packer. The sealing performance of the packer's sealing element directly affects the reliability of the packer's downhole operation and the effectiveness of interlayer isolation, making it key to ensuring the packer's success.

[0003] Conventional packers use rubber sleeves as their sealing elements. Currently, the market only offers performance testing devices for packer sleeves, and their testing capabilities are insufficient to meet the performance testing requirements of sealing elements made of metal. Summary of the Invention

[0004] This invention provides a performance testing device for metal sealing mechanisms to alleviate the problem that existing testing equipment cannot perform performance testing on sealing elements made of metal materials.

[0005] To alleviate the above-mentioned technical problems, the technical solution provided by the present invention is as follows:

[0006] This solution provides a metal sealing mechanism performance testing device, including a setting seal performance testing component and an airtightness performance testing component;

[0007] The setting performance testing component can apply pressure to the metal sealing mechanism, causing the metal sealing mechanism to change from the connected state to the setting state;

[0008] The airtightness testing component can heat the metal sealing mechanism at high temperature and inject high-temperature and high-pressure gas into the left and right ends of the metal sealing mechanism respectively. The airtightness of the metal sealing mechanism can be determined by observing whether the high-temperature and high-pressure gas leaks to the other side.

[0009] Furthermore,

[0010] The setting performance testing components include a universal pressure testing machine;

[0011] The universal pressure testing machine can apply pressure to the metal sealing mechanism, causing the sealing body inside the metal sealing mechanism to expand under pressure and enter the setting state. By measuring the distance between the upper joint and the test sleeve of the metal sealing mechanism in the connected state and the setting state, respectively, as well as the pressure value of the universal pressure testing machine, the relationship between the setting load and the setting distance of the metal sealing mechanism can be obtained.

[0012] Furthermore,

[0013] The airtightness testing assembly includes a first connector, a second connector, and a sleeve;

[0014] The metal sealing mechanism is located inside the sleeve;

[0015] The first connector is connected to the left end of the sleeve;

[0016] The second connector is connected to the right end of the sleeve;

[0017] The test sleeve has a first vent and a second vent;

[0018] The first vent and the second vent are respectively connected to the sealing body;

[0019] A metal sealing ring is installed between the first exhaust port and the second exhaust port.

[0020] Furthermore,

[0021] The first connector is connected to the first exhaust port;

[0022] The second connector is connected to the second exhaust port.

[0023] Furthermore,

[0024] In the connected state, the first exhaust port is connected to the second exhaust port;

[0025] In the set-sealed state, the first vent and the second vent are disconnected.

[0026] Furthermore,

[0027] The testing method for the airtightness testing component includes the following steps:

[0028] S1: Puts the metal sealing mechanism into the setting state;

[0029] S2: Remove the upper connector of the metal sealing mechanism and use the upper plug to seal one side of the upper connector of the metal sealing mechanism;

[0030] S3: Heating the sleeve at high temperature;

[0031] S4: Continuously inject high-temperature and high-pressure gas into the first connector. After a period of time, observe whether there is any high-temperature and high-pressure gas leakage in the second connector. If there is no high-temperature and high-pressure gas leakage, the sealing performance is good.

[0032] S5: Empty the high-temperature and high-pressure gas in the first connector and continuously inject high-temperature and high-pressure gas into the second connector. After a period of time, observe whether there is any high-temperature and high-pressure gas leakage in the first connector. If there is no high-temperature and high-pressure gas leakage, the sealing performance is good.

[0033] The beneficial effects of the metal sealing mechanism performance testing device in this invention are analyzed as follows:

[0034] This device includes a setting performance testing component and an airtightness testing component. The setting performance testing component can apply pressure to the metal sealing mechanism, causing it to change from a connected state to a setting state. The airtightness testing component can heat the metal sealing mechanism at high temperature and inject high-temperature, high-pressure gas into the left and right ends of the metal sealing mechanism respectively. By observing whether the high-temperature, high-pressure gas leaks to the other side, the airtightness of the metal sealing mechanism can be determined. This method can accurately determine the airtightness of the sealing element, providing data support for subsequent design improvements and product verification. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the specific embodiments or related technologies of the present invention, the drawings used in the description of the specific embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0036] Figure 1 A schematic diagram of the airtightness testing component provided in an embodiment of the present invention;

[0037] Figure 2 This is a schematic diagram of the metal sealing mechanism.

[0038] icon:

[0039] 100 - First connector;

[0040] 200 - Second connector;

[0041] 300-sleeve;

[0042] 400 - Test sleeve; 410 - First vent hole; 420 - Second vent hole;

[0043] 500 - Sealing body;

[0044] 600 - Metal Seal Ring;

[0045] 700-Top connector;

[0046] 800 - Upper plug. Detailed Implementation

[0047] Packers are crucial tools in downhole operations, with a wide range of applications across all stages of oil and gas well exploration and development. The sealing element is the core component of the packer. The sealing performance of the packer's sealing element directly affects the reliability of the packer's downhole operation and the effectiveness of interlayer isolation, making it key to ensuring the packer's success.

[0048] Conventional packers use rubber sleeves as their sealing elements. Currently, the market only offers performance testing devices for packer sleeves, and their testing capabilities are insufficient to meet the performance testing requirements of sealing elements made of metal.

[0049] In view of this, this solution provides a metal sealing mechanism performance testing device to alleviate the above problems.

[0050] This device includes a setting performance testing component and an airtightness testing component;

[0051] The setting performance testing component can apply pressure to the metal sealing mechanism, causing the metal sealing mechanism to change from the connected state to the setting state;

[0052] The airtightness testing component can heat the metal sealing mechanism at high temperature and inject high-temperature and high-pressure gas into the left and right ends of the metal sealing mechanism respectively. The airtightness of the metal sealing mechanism can be determined by observing whether the high-temperature and high-pressure gas leaks to the other side.

[0053] like Figure 1 As shown, the metal sealing mechanism includes an upper connector 700, a locking ring, a piston, a central tube, a metal sealing ring, a sealing body 500, a test sleeve 400, a lower connector, a lower plug, and an upper plug. The central tube is located inside the test sleeve 400. The sealing body 500 is located in the cavity between the central tube and the test sleeve 400 and is sleeved with the central tube. The upper connector is threaded to both the test sleeve 400 and the central tube and abuts against the right end of the sealing body 500. The lower plug is inserted into the lower connector and abuts against the central tube. Pipe thread connection; a piston is fitted to the left end of the central tube, and the left end of the piston can be threaded to the upper connector 700. The left end of the central tube is also provided with an internal thread. After removing the upper connector 700, the upper plug can be threaded to the left end of the central tube. A locking ring is set between the central tube and the piston and is connected to the central tube through a tooth. Multiple sets of metal sealing rings are provided between the piston and the test sleeve 400 and the central tube, between the lower connector and the test sleeve 400 and the central tube, and between the lower plug and the lower connector.

[0054] In this plan, such as Figure 2 As shown, the setting performance testing assembly includes a universal pressure testing machine;

[0055] The universal pressure testing machine can apply pressure to the metal sealing mechanism, causing the sealing body 500 inside the metal sealing mechanism to expand under pressure, so that the metal sealing mechanism enters the setting state. By measuring the distance between the upper joint 700 and the test sleeve 400 of the metal sealing mechanism in the connected state and the setting state respectively, as well as the pressure value of the universal pressure testing machine, the relationship between the setting load and the setting distance of the metal sealing mechanism can be obtained.

[0056] Specifically, when the universal testing machine applies pressure to the piston on the upper connector 700 side, the sealing body 500 expands under pressure. Because there is a toothed structure between the locking ring and the central tube, the metal sealing mechanism cannot return from the setting state to the connected state after the pressure of the universal testing machine disappears. The setting distance is obtained by measuring the distance between the upper connector 700 and the test sleeve 400 in the connected state and then measuring the distance between the upper connector 700 and the test sleeve 400 in the setting state. The setting load value is obtained by reading the pressure data of the universal testing machine.

[0057] In this solution, the airtightness testing component includes a first connector 100, a second connector 200, and a sleeve 300;

[0058] The metal sealing mechanism is located inside the sleeve 300;

[0059] The first connector 100 is connected to the left end of the sleeve 300;

[0060] The second connector 200 is connected to the right end of the sleeve 300;

[0061] The test sleeve 400 has a first vent 410 and a second vent 420;

[0062] The first vent 410 and the second vent 420 are respectively connected to the sealing body 500;

[0063] A metal sealing ring 600 is provided between the first vent 410 and the second vent 420.

[0064] like Figure 1 As shown, both the first connector 100 and the second connector 200 have cavities that can hold gas, and each has an opening for gas injection in its upper part.

[0065] In this design, the first connector 100 is connected to the first vent 410;

[0066] The second connector 200 is connected to the second vent 420;

[0067] In the connected state, the first exhaust port 410 is connected to the second exhaust port 420;

[0068] In the set-sealed state, the first vent 410 and the second vent 420 are disconnected.

[0069] Specifically, a metal sealing ring is provided between the test sleeve 400 and the sleeve 300 between the first vent hole 410 and the second vent hole 420, so that after gas injection, the gas cannot leak from the first joint 100 into the second joint 200 through the gap between the test sleeve 400 and the sleeve 300; the gas can only flow through the channel formed by the gap in the first vent hole 410 and the sealing body 500 and the second vent hole 420.

[0070] In this solution, the testing method for the airtightness testing component includes the following steps:

[0071] S1: Puts the metal sealing mechanism into the setting state;

[0072] S2: Remove the upper connector 700 of the metal sealing mechanism and use the upper plug 800 to seal one side of the upper connector 700 of the metal sealing mechanism;

[0073] S3: Heating the sleeve at high temperature;

[0074] S4: Continuously inject high-temperature and high-pressure gas into the first connector 100. After a period of time, observe whether there is any high-temperature and high-pressure gas leakage in the second connector 200. If there is no high-temperature and high-pressure gas leakage, the sealing performance is good.

[0075] S5: Empty the high-temperature and high-pressure gas in the first connector 100 and continuously inject high-temperature and high-pressure gas into the second connector 200. After a period of time, observe whether there is any high-temperature and high-pressure gas leakage in the first connector 100. If there is no high-temperature and high-pressure gas leakage, the sealing performance is good.

[0076] This solution has at least the following beneficial effects:

[0077] This device, through its setting performance testing component, can accurately simulate the downhole working environment, applying pressure to the metal sealing mechanism to transition it from a connected state to a set state, thereby assessing the reliability of the sealing performance and ensuring that the metal sealing element can successfully complete its sealing task in practical applications. Secondly, the airtightness testing component tests the airtightness of the metal sealing mechanism through high-temperature heating and high-pressure gas injection, effectively evaluating its sealing performance under high-temperature and high-pressure environments. By observing whether gas leaks occur, the airtightness performance of the sealing element can be accurately determined, providing data support for subsequent design improvements and product verification.

[0078] This testing device not only improves the accuracy and reliability of sealing performance testing, but also broadens the application scope of packer sealing element performance testing, solving the problem that traditional testing equipment cannot meet the requirements of metal sealing elements.

[0079] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A performance testing device for a metal sealing mechanism, characterized in that: Includes a setting performance testing component and an airtightness testing component; The setting performance testing component can apply pressure to the metal sealing mechanism, causing the metal sealing mechanism to change from a connected state to a setting state; The airtightness testing component can heat the metal sealing mechanism at high temperature and inject high-temperature and high-pressure gas into the left and right ends of the metal sealing mechanism respectively. The airtightness of the metal sealing mechanism can be determined by observing whether the high-temperature and high-pressure gas leaks to the other side.

2. The metal sealing mechanism performance testing device according to claim 1, characterized in that: The setting seal performance testing component includes a universal pressure testing machine; The universal pressure testing machine can apply pressure to the metal sealing mechanism, causing the sealing body (500) inside the metal sealing mechanism to expand under pressure, so that the metal sealing mechanism enters the setting state. By measuring the distance between the upper joint (700) and the test sleeve (400) of the metal sealing mechanism in the connected state and the setting state, respectively, as well as the pressure value of the universal pressure testing machine, the relationship between the setting load and the setting distance of the metal sealing mechanism can be obtained.

3. The metal sealing mechanism performance testing device according to claim 2, characterized in that: The airtightness testing component includes a first connector (100), a second connector (200), and a sleeve (300); The metal sealing mechanism is disposed inside the sleeve (300); The first connector (100) is connected to the left end of the sleeve (300); The second connector (200) is connected to the right end of the sleeve (300); The test sleeve (400) has a first vent (410) and a second vent (420); The first vent (410) and the second vent (420) are respectively connected to the sealing body (500); A metal sealing ring (600) is provided between the first vent (410) and the second vent (420).

4. The metal sealing mechanism performance testing device according to claim 3, characterized in that: The first connector (100) is connected to the first vent (410); The second connector (200) is connected to the second vent (420).

5. The metal sealing mechanism performance testing device according to claim 4, characterized in that: In the connected state, the first exhaust port (410) is connected to the second exhaust port (420); In the set-sealed state, the first vent hole (410) is disconnected from the second vent liquid hole (420).

6. The metal sealing mechanism performance testing device according to claim 5, characterized in that: The testing method for the airtightness testing component includes the following steps: S1: Put the metal sealing mechanism into the setting state; S2: Remove the upper connector (700) of the metal sealing mechanism and use the upper plug (800) to seal one side of the upper connector (700) of the metal sealing mechanism; S3: The sleeve is heated at high temperature; S4: Continuously inject high-temperature and high-pressure gas into the first connector (100), and observe whether there is high-temperature and high-pressure gas leakage in the second connector (200) after a period of time. If there is no high-temperature and high-pressure gas leakage, the sealing performance is good. S5: Empty the high-temperature and high-pressure gas in the first connector (100) and continuously inject high-temperature and high-pressure gas into the second connector (200). After a period of time, observe whether there is any high-temperature and high-pressure gas leakage in the first connector (100). If there is no high-temperature and high-pressure gas leakage, the sealing performance is good.

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