High-temperature sealing test device for tail pipe packer
By designing a high-temperature sealing test device for tailpipe packers, and utilizing the interference fit between the inner and outer cylinders and the heating of heat transfer oil, a high-temperature and high-pressure environment is simulated, which solves the problem that the sealing performance of packers cannot be tested at high temperatures in existing technologies and improves the test results.
Patent Information
- Application Number
- CN202423022421.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-09
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2034-12-09
AI Technical Summary
Existing packer sealing performance testing methods cannot perform high-pressure performance testing under high-temperature conditions, and cannot meet the high-temperature and high-pressure environment requirements of deep wells and ultra-deep wells.
A high-temperature sealing test device for tailpipe packers was designed. The device utilizes the interference fit structure of the packer consisting of an inner cylinder and an outer cylinder, combined with heat transfer oil heating and temperature control by a temperature controller. The device simulates high-temperature and high-pressure environment testing through a test pump and a pressure gauge.
This technology enables the testing of packer sealing performance under high-temperature conditions, thus improving the effectiveness of sealing performance testing.
Smart Images
Figure CN223551258U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of oil well cementing, and in particular to a high-temperature sealing test device for a tailpipe packer. Background Technology
[0002] With the rapid development of drilling technology, cementing procedures are also being updated daily. The packer-type liner hanger incorporates a top packer based on the conventional liner hanger. After cementing is completed, the packer is set, thereby sealing the cement annulus and improving annular sealing capability.
[0003] With the increasing number of deep and ultra-deep wells, the temperature and pressure at the bottom of the well are also getting higher and higher. Therefore, the requirements for the sealing ability of packers in high temperature and high pressure environments are also getting higher and higher.
[0004] Existing methods for testing the sealing performance of packers are relatively limited and cannot achieve high-pressure performance testing under high-temperature conditions. Utility Model Content
[0005] To address the aforementioned technical problems, this application provides a high-temperature sealing test device for tailpipe packers.
[0006] The high-temperature sealing test device for tailpipe packers provided in this application adopts the following technical solution:
[0007] A high-temperature sealing test device for a tailpipe packer includes an inner cylinder and an outer cylinder. The packer is disposed between the inner cylinder and the outer cylinder. The inner peripheral wall of the packer is interference-fitted with the outer peripheral wall of the inner cylinder, and the outer peripheral wall of the packer is interference-fitted with the inner peripheral wall of the outer cylinder.
[0008] The inner cylinder is filled with heat-conducting oil. The top of the inner cylinder is fixed with a top cover by bolts. A heater and a temperature controller are installed on the bottom surface of the top cover. The heater is connected to an external power switch. Both the heater and the temperature controller extend into the heat-conducting oil. The temperature controller is electrically connected to the heater. When the reading of the temperature controller reaches the set temperature value, the heater stops heating.
[0009] The outer cylinder has a test pressure port and a drain port that communicate with the inside of the outer cylinder on its side wall. The test pressure port is located above the packer, and the drain port is located below the packer. An auxiliary pipe is fixedly connected to the test pressure port, and a test pressure pump is connected to the auxiliary pipe. The test pressure pump pumps hydraulic oil into the test pressure port. A pressure gauge is installed on the auxiliary pipe. The pressure gauge is used to check the pressure between the test pressure port and the packer. When the reading of the pressure gauge reaches the set pressure value, the test pressure pump stops pressurizing.
[0010] Preferably, the heat transfer oil fills the inner cylinder.
[0011] Preferably, the top cover is provided with an oil dipstick, which extends into the heat transfer oil and is used to detect whether the amount of heat transfer oil is sufficient.
[0012] In summary, this application includes the following beneficial technical effects:
[0013] During the test, the power switch is turned on, and the heater conducts temperature through the heat transfer oil, heating the inner cylinder to the set temperature to form a high-temperature environment. The temperature is detected by a temperature controller. When the temperature controller reading reaches the set temperature value, the heater stops heating. Then, the pressure test pump pumps hydraulic oil into the pressure test port to form a high-pressure environment. When the pressure gauge reading reaches the set pressure value, the pressure test pump stops pressurizing.
[0014] If the pressure gauge reading increases during pressurization and remains stable after pressurization stops, it indicates that the packer has good sealing performance. If the pressure gauge reading decreases, it indicates that the packer has poor sealing performance.
[0015] The above testing process enables the packer's sealing performance to be tested under high temperature conditions, thus improving the effectiveness of the packer's sealing performance testing. Attached Figure Description
[0016] Figure 1 This is a schematic cross-sectional view of the overall structure of a high-temperature sealing test device for a tailpipe packer according to an embodiment of this application.
[0017] Explanation of the attached diagram markings: 1. Oil dipstick; 2. Temperature controller; 3. Top cover; 4. Bolt; 5. Pressure test port; 6. Packer; 7. Outer cylinder; 8. Inner cylinder; 9. Heater; 10. Heat transfer oil; 11. Pressure test pump; 12. Pressure gauge; 13. Drain port. Detailed Implementation
[0018] The following is in conjunction with the appendix Figure 1 This application will be described in further detail.
[0019] This application discloses a high-temperature sealing test device for a tailpipe packer.
[0020] Reference Figure 1 The tailpipe packer high-temperature sealing test device includes an inner cylinder 8 and an outer cylinder 7. The packer 6 is disposed between the inner cylinder 8 and the outer cylinder 7. The inner peripheral wall of the packer 6 is interference-fitted with the outer peripheral wall of the inner cylinder 8, and the outer peripheral wall of the packer 6 is interference-fitted with the inner peripheral wall of the outer cylinder 7.
[0021] The inner cylinder 8 is filled with heat transfer oil 10. The top of the inner cylinder 8 is fixed with a top cover 3 by bolts 4. A heater 9 and a temperature controller 2 are installed on the bottom surface of the top cover 3. The heater 9 is connected to an external power switch. Both the heater 9 and the temperature controller 2 extend into the heat transfer oil 10. The temperature controller is electrically connected to the heater 9. When the reading of the temperature controller 2 reaches the set temperature value, the heater 9 stops heating.
[0022] The inner cylinder 8 is filled with heat transfer oil 10 to improve the heating effect.
[0023] An oil dipstick 1 is provided on the top cover 3. The oil dipstick 1 extends into the heat transfer oil 10. The oil dipstick 1 is used to detect whether the amount of heat transfer oil 10 is sufficient. When the heat transfer oil 10 is detected to be insufficient, it can be added.
[0024] The outer cylinder 7 has a pressure test port 5 and a drain port on its side wall, which communicate with the interior of the outer cylinder 7. The pressure test port 5 is located above the packer 6, and the drain port is located below the packer 6. An auxiliary pipe is fixedly connected to the pressure test port 5, and a pressure test pump 11 is connected to the auxiliary pipe. The pressure test pump 11 pumps hydraulic oil into the pressure test port 5. A pressure gauge 12 is installed on the auxiliary pipe. The pressure gauge 12 is used to check the pressure between the pressure test port 5 and the packer 6. When the reading of the pressure gauge 12 reaches the set pressure value, the pressure test pump 11 stops pressurizing. After the test is completed, the packer 6 is removed, and the hydraulic oil is discharged from the drain port.
[0025] The implementation principle of the high-temperature sealing test device for tailpipe packers in this application is as follows:
[0026] During the test, the power switch is turned on, and the heater 9 conducts temperature through the heat transfer oil 10, heating the inner cylinder 8 to the set temperature to form a high-temperature environment. The temperature is detected by the temperature controller 2. When the reading of the temperature controller 2 reaches the set temperature value, the heater 9 stops heating. Then, the pressure test pump 11 pumps hydraulic oil into the pressure test port 5 to form a high-pressure environment. When the reading of the pressure gauge 12 reaches the set pressure value, the pressure test pump 11 stops pressurizing.
[0027] If the pressure gauge 12 reading increases during the pressurization process and remains stable after pressurization stops, it indicates that the packer 6 has good sealing performance. If the pressure gauge 12 reading decreases, it indicates that the packer 6 has poor sealing performance.
[0028] The above testing process enables the sealing performance testing of packer 6 under high temperature conditions, thus improving the effectiveness of the sealing performance testing of packer 6.
[0029] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A high-temperature sealing test device for a tailpipe packer, characterized in that: It includes an inner cylinder (8) and an outer cylinder (7), and a packer (6) is disposed between the inner cylinder (8) and the outer cylinder (7). The inner peripheral wall of the packer (6) is press-fitted with the outer peripheral wall of the inner cylinder (8), and the outer peripheral wall of the packer (6) is press-fitted with the inner peripheral wall of the outer cylinder (7). The inner cylinder (8) is filled with heat transfer oil (10). The top of the inner cylinder (8) is fixed with a top cover (3) by bolts (4). A heater (9) and a thermometer (2) are provided on the bottom surface of the top cover (3). The heater (9) is connected to an external power switch. Both the heater (9) and the thermometer (2) extend into the heat transfer oil (10). The thermometer (2) is electrically connected to the heater (9). When the reading of the thermometer (2) reaches the set temperature value, the heater (9) stops heating. The outer cylinder (7) has a test pressure port (5) and a drain port that communicate with the inside of the outer cylinder (7) on its side wall. The test pressure port (5) is located above the packer (6), and the drain port is located below the packer (6). An auxiliary pipe is fixedly connected to the test pressure port (5), and a test pressure pump (11) is connected to the auxiliary pipe. The test pressure pump (11) pumps hydraulic oil into the test pressure port (5). A pressure gauge (12) is installed on the auxiliary pipe. The pressure gauge (12) is used to check the pressure between the test pressure port (5) and the packer (6). When the reading of the pressure gauge (12) reaches the set pressure value, the test pressure pump (11) stops pressurizing.
2. The high-temperature sealing test device for the tailpipe packer according to claim 1, characterized in that: The heat transfer oil (10) fills the inner cylinder (8).
3. The high-temperature sealing test device for the tailpipe packer according to claim 1, characterized in that: The top cover (3) is provided with an oil dipstick (1), which extends into the heat transfer oil (10) and is used to detect whether the amount of heat transfer oil (10) is sufficient.