High-temperature and high-pressure test bin for internal parts of logging instrument

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By designing a high-temperature and high-pressure test chamber and using heating belts and pressure control devices, the problems of limited test well depth and high cost in the existing technology are solved, efficient high-temperature and high-pressure testing is achieved, and the cost and cycle are reduced.

CN223449265UActive Publication Date: 2025-10-17ZHENGZHOU RUIBANG PETROLEUM MACHINERY

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Patent Information

Application Number: CN202423132115.4
Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner
Filing Date: 2024-12-18
Publication Date: 2025-10-17
Estimated Expiration: 2034-12-18

AI Technical Summary

Technical Problem

The existing high-temperature and high-pressure testing methods for logging instruments rely on test wells, which have limited depth, long cycles, and high costs, and cannot meet the needs of deep exploration.

Method used

A high-temperature and high-pressure test device was designed, which includes a test chamber, a heating belt, an end cover, a pressure-bearing aviation plug, a pressure joint and an exhaust joint. The heating belt is used to simulate a high-temperature environment, and the pressure joint and the exhaust joint are used to control the pressure, realize cable connection and power supply, and simulate underground high-temperature and high-pressure conditions.

Benefits of technology

It provides an efficient and low-cost high-temperature and high-pressure test method, which can simulate the high-temperature and high-pressure environment of deep exploration in the laboratory, reducing the test cost and cycle.

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Abstract

The utility model relates to the field of oil exploration, in particular to a high-temperature and high-pressure test bin for internal parts of a logging instrument, which comprises a test bin, a heating tape wound on the outer side of the test bin and used for increasing the temperature of the whole test environment, a first end cover and a second end cover are respectively fixed at two ends of the test bin, and the second end cover is positioned on one side of the first end cover. The two ends of the test bin are plugged through the first end cover and the second end cover, meanwhile, the cable connecting base and the forming plug are connected through the pressure-bearing aviation plug, so that communication and power supply are conducted on a tested electric device, in addition, the pressing connector is used for pressing the interior of the test bin, and air is exhausted through the exhaust connector; and an underground high-temperature and high-pressure environment is simulated in the test bin by using a heating belt.

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Description

TECHNICAL FIELD

[0001] The utility model relates to the field of petroleum exploration, in particular to a high temperature and high pressure test bin of logging instrument internal parts. BACKGROUND

[0002] At present, when the logging instrument used in petroleum exploration carries out high temperature and high pressure test, generally corresponding test well is selected to test the whole instrument internal parts, with the increasing depth of petroleum exploration, the pressure and temperature received by the instrument are also increasing, and the depth of the existing test well cannot meet the requirement, the waiting period of the test well is particularly long, and the price used is relatively expensive, thereby making the whole test cost higher. INNOVATION CONTENT

[0003] The utility model discloses a high temperature and high pressure test bin of logging instrument internal parts.

[0004] The utility model discloses the following technical scheme to realize the above-mentioned purpose:

[0005] A high temperature and high pressure test bin of logging instrument internal parts, including test bin, the heating band for improving the whole test environment temperature is wound to test bin outside, the first end cover and the second end cover are fixed respectively to the both ends of test bin, and the second end cover is located at first end cover one side;

[0006] The limiting jack is set up in the first end cover center position, and the pressure bearing aviation plug is fixed in the limiting jack, the one end of pressure bearing aviation plug towards the outside is inserted and connected with the cable connecting seat for connecting the cable, the one end of pressure bearing aviation plug towards the inside is inserted and connected with the shaped plug for connecting the tested electrical element, and the cable connecting seat is fixed with the pressure plate for preventing the cable connecting seat from separating away from the one end of test bin;

[0007] The pressure regulating connector is rotatably connected to one end of the second end cover, the exhaust connector for discharging the air in the test bin is arranged on the front side of the pressure regulating connector, and the pressure connector for injecting hydraulic oil into the test bin is fixed on the rear side of the pressure regulating connector.

[0008] Preferably, the test bin is fixed with a power motor, the first pump head and the second pump head are arranged at one end of the power motor, and the second pump head is located at one end of the first pump head.

[0009] Preferably, the oil passage block is fixed at one end of the test bin, and the stepper motor is fixed at one end of the oil passage block close to the second pump head.

[0010] Preferably, the oil guide hole for connecting the pressure connector, the exhaust connector and the pressure regulating connector is arranged in the second end cover, the two oil regulating holes for connecting the oil guide hole are arranged in the oil passage block, and the overflow valve is arranged at one end of the oil regulating hole close to the stepper motor.

[0011] Preferably, the oil passage block is connected with the second pump head through the second oil pipe, and the oil passage block is connected with the first pump head through the first oil pipe.

[0012] Preferably, a through hole is arranged in the end of the pressure joint extending into the oil guide hole, and two oil adjusting holes on the oil passage block correspond to the pressure joint and the exhaust joint respectively.

[0013] Compared with the prior art, the beneficial effects are as follows: the test bin is sealed at both ends by the first end cover and the second end cover, the cable connecting seat and the shaped plug are connected by the pressure bearing aviation plug, so that the tested electrical device can communicate and be powered, the test bin is pressurized by the pressure joint, air is exhausted by the exhaust joint, and the high temperature and high pressure environment of the underground is simulated in the test bin by the heating belt. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0015] Figure 1 is a structural schematic view of the high temperature and high pressure test bin of the internal parts of the logging instrument according to the present application;

[0016] Figure 2 is a sectional view of the high temperature and high pressure test bin of the internal parts of the logging instrument according to the present application;

[0017] Figure 3 is a cooperation view of the power motor, the first pump head and the second pump head of the high temperature and high pressure test bin of the internal parts of the logging instrument according to the present application;

[0018] Figure 4 is a local part view of the second end cover of the high temperature and high pressure test bin of the internal parts of the logging instrument according to the present application;

[0019] Figure 5 is a local part view of the first end cover of the high temperature and high pressure test bin of the internal parts of the logging instrument according to the present application;

[0020] Figure 6 is a cooperation view of the first end cover and the cable connecting seat of the high temperature and high pressure test bin of the internal parts of the logging instrument according to the present application;

[0021] Figure 7 is a cooperation view of the pressure disc and the cable connecting seat of the high temperature and high pressure test bin of the internal parts of the logging instrument according to the present application;

[0022] Figure 8 is the cable connecting seat and the molded plug structure schematic view of the high temperature and high pressure test bin of the internal part of the logging instrument according to the utility model;

[0023] Figure 9 is the pressure bearing aviation plug partial part view of the high temperature and high pressure test bin of the internal part of the logging instrument according to the utility model;

[0024] Figure 10 is the first oil pipe, the second oil pipe and the oil way block cooperation view of the high temperature and high pressure test bin of the internal part of the logging instrument according to the utility model;

[0025] Figure 11 is the second end cover partial section view of the high temperature and high pressure test bin of the internal part of the logging instrument according to the utility model.

[0026] The figure mark explanation is as follows:

[0027] 1, test bin;2, first end cover;3, second end cover;4, power motor;5, first pump head;6, second pump head;7, oil way block;8, stepping motor;9, heating band;21, cable connecting seat;22, pressure bearing aviation plug;23, molded plug;24, pressure plate;25, limit jack;31, press joint;32, exhaust joint;33, pressure regulating joint;34, oil guide hole;51, first oil pipe;61, second oil pipe;71, oil regulating hole;81, overflow valve. Specific implementation mode

[0028] In the description of the utility model, need explanation, unless another explicit provision and limitation, the term " install " " be connected " " connection " should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through intermediate medium, can be the intercommunication of two elements inside.For the ordinary skill in the art, the above-mentioned terms can be understood by the specific meaning in the utility model in the specific circumstances.

[0029] The utility model will be further described below in conjunction with the drawings:

[0030] As Figures 1-11As shown, a kind of high temperature and high pressure test chamber of logging instrument internal parts, including test chamber 1, test chamber 1 outside is wound with the heating belt 9 for improving the whole test environment temperature, test chamber 1 two ends are respectively fixed with first end cover 2 and second end cover 3, second end cover 3 is located first end cover 2 side, test chamber 1 inside is fixed with power motor 4, power motor 4 one end is equipped with first pump head 5 and second pump head 6, second pump head 6 is located first pump head 5 one end, second end cover 3 is located the one end of test chamber 1 and is fixed with oil passage block 7, oil passage block 7 is connected with second pump head 6 by second oil pipe 61, oil passage block 7 is connected with first pump head 5 by first oil pipe 51, oil passage block 7 is fixed with step motor 8 on one end close to second pump head 6, pressure sensor, temperature sensor, solenoid valve, coil, check valve etc. are installed on one end of oil passage block 7 located step motor 8.

[0031] In the embodiment: the first end cover 2 center position is provided with a limiting hole 25, the limiting hole 25 is fixed with a pressure-bearing aviation plug 22, the pressure-bearing aviation plug 22 is inserted with a cable connector seat 21 for connecting with the cable on one end facing the outside, the pressure-bearing aviation plug 22 is inserted with a shaped plug 23 for connecting with the tested electrical components on one end facing the inside, the cable connector seat 21 is fixed with a pressure plate 24 for preventing the cable connector seat 21 from being separated on one end away from the test chamber 1, the cable connector seat 21 inserted on the pressure-bearing aviation plug 22 is fixed by the pressure plate 24, to prevent the cable connector seat 21 from being bounced out when the pressure in the test chamber 1 is too large to damage the pressure-bearing aviation plug 22, and the pressure-bearing aviation plug 22 is used to bear the pressure of the test chamber 1, and the communication and power supply of the cable connector seat 21 and the shaped plug 23 are completed.

[0032] In the embodiment: the second end cover 3 is rotatably connected with a pressure regulating connector 33 on one end, the pressure regulating connector 33 is provided with an exhaust connector 32 for exhausting the air in the test chamber 1 on the front side, the pressure regulating connector 33 is fixed with a pressure hitting connector 31 for hitting hydraulic oil into the test chamber 1 on the rear side, the second end cover 3 is provided with a oil guide hole 34 for connecting the pressure hitting connector 31, the exhaust connector 32 and the pressure regulating connector 33, the oil passage block 7 is provided with two oil regulating holes 71 for connecting with the oil guide hole 34, and the oil regulating hole 71 is installed with an overflow valve 81 on one end close to the step motor 8, the pressure regulating connector 33 is provided with a through hole on one end inserted into the oil guide hole 34, the two oil regulating holes 71 on the oil passage block 7 correspond to the pressure hitting connector 31 and the exhaust connector 32 respectively, the through hole blocks the middle position of the oil guide hole 34 by rotating the pressure regulating connector 33, to avoid the oil guide hole 34 at the position of the pressure hitting connector 31 and the oil guide hole 34 at the position of the exhaust connector 32 from being connected, and then the hydraulic oil can be injected into the test chamber 1 through the pressure hitting connector 31, and the air in the test chamber 1 can be exhausted through the exhaust connector 32, to complete the increase of the oil pressure in the test chamber 1.

[0033] Working principle: before testing, open the second end cover 3 and the first end cover 2 of the test chamber 1, and install the components such as the stepping motor 8, pressure sensor, temperature sensor, electromagnetic valve, coil, check valve, etc. on the oil passage block 7 of the second end cover 3, then put the power motor 4, first pump head 5 and second pump head 6 to be tested into the test chamber 1, then connect the electrical device to be tested with the molded plug 23, then insert the molded plug 23 into the pressure-bearing aviation plug 22, then re-install the first end cover 2 and the second end cover 3 on both ends of the test chamber 1 through bolts, then insert the cable connecting seat 21 into the limiting jack 25, and fix the pressure plate 24 at the end of the first end cover 2 to prevent the cable connecting seat 21 from being bounced out when the pressure in the test chamber 1 is too high to damage the pressure-bearing aviation plug 22, at the same time, the pressure-bearing aviation plug 22 is used to bear the pressure of the test chamber 1, and the communication and power supply of the cable connecting seat 21 and the molded plug 23 are completed;

[0034] During testing, connect the pressure joint 31 with the external pressure device, and rotate the pressure regulating joint 33 to make the axis of the through hole perpendicular to the axis of the oil guide hole 34, then block the middle position of the oil guide hole 34, so as to avoid the communication between the oil guide hole 34 at the position of the pressure joint 31 and the oil guide hole 34 at the position of the exhaust joint 32, and at the same time, open the exhaust joint 32;

[0035] Then, through the pressure device, hydraulic oil is sent into the test chamber 1 from the pressure joint 31 and the oil regulating hole 71 corresponding to the pressure joint 31, and the air in the test chamber 1 is discharged through the exhaust joint 32 and the oil regulating hole 71 corresponding to the exhaust joint 32; when the air in the test chamber 1 is discharged, the exhaust joint 32 is tightened again to prevent the hydraulic oil in the test chamber 1 from flowing out, and as the pressure device continues to supply oil, the oil pressure in the whole test chamber 1 rises, and when the oil pressure rises to the corresponding pressure, the oil injection into the test chamber 1 is stopped, and the test chamber 1 is heated by the heating belt 9, then the performance of the whole component in the test chamber 1 can be tested;

[0036] When the pressure test of the second pump head 6 is needed, rotate the pressure regulating joint 33 to make the through hole communicate with the oil guide hole 34, then the power motor 4 drives the second pump head 6 to rotate, and the oil is supplied to the overflow valve 81 through the second oil pipe 61, and at the same time, the opening of the overflow valve 81 is adjusted by the stepping motor 8 to control the oil pressure at the second pump head 6, in this process, the hydraulic oil flows back to the test chamber 1 through the oil guide hole 34 and the oil regulating hole 71 corresponding to the exhaust joint 32, then the test of the second pump head 6 is completed;

[0037] In addition, the exhaust joint 32 can be removed and connected with the pressure joint 31 of another test chamber 1 to complete the series connection of two test chambers 1, then one pressure device can be used to pressurize multiple test chambers 1, and at the same time, the above steps can be repeated to connect multiple test chambers 1 in series to expand the test space.

[0038] The basic principle, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application.

Claims

1. A high-temperature and high-pressure test chamber for internal parts of a well logging instrument, characterized by: The test chamber (1) comprises a test chamber (1), the outer side of which is wrapped with a heating belt (9) for increasing the temperature of the entire test environment, a first end cover (2) and a second end cover (3) being fixed to both ends of the test chamber (1), and the second end cover (3) being located on one side of the first end cover (2); A limiting jack (25) is provided at the center of the first end cover (2), a pressure-bearing aviation plug (22) is fixed in the limiting jack (25), a cable connection seat (21) for connecting to a cable is plugged into the end of the pressure-bearing aviation plug (22) facing outward, a molded plug (23) for connecting to a tested electrical component is plugged into the end of the pressure-bearing aviation plug (22) facing inward, and a pressure plate (24) for preventing the cable connection seat (21) from being detached is fixed to the end of the cable connection seat (21) away from the test chamber (1); One end of the second end cover (3) is rotatably connected to a pressure regulating joint (33); an exhaust joint (32) for discharging air from the interior of the test chamber (1) is provided on the front side of the pressure regulating joint (33); and a pressure injection joint (31) for injecting hydraulic oil into the interior of the test chamber (1) is fixed on the rear side of the pressure regulating joint (33).

2. A high-temperature and high-pressure test chamber for internal parts of a well logging instrument according to claim 1, characterized in that: A power motor (4) is fixed inside the test chamber (1), and a first pump head (5) and a second pump head (6) are provided at one end of the power motor (4), and the second pump head (6) is located at one end of the first pump head (5).

3. A high-temperature and high-pressure test chamber for internal parts of a well logging instrument according to claim 2, characterized in that: An oil circuit block (7) is fixed to one end of the second end cover (3) located in the test chamber (1), and a stepping motor (8) is fixed to one end of the oil circuit block (7) close to the second pump head (6).

4. A high-temperature and high-pressure test chamber for internal parts of a well logging instrument according to claim 3, characterized in that: An oil guide hole (34) for communicating with the pressure joint (31), the exhaust joint (32) and the pressure regulating joint (33) is provided inside the second end cover (3); two oil regulating holes (71) for communicating with the oil guide hole (34) are provided inside the oil circuit block (7); and an overflow valve (81) is installed at one end of the oil regulating hole (71) close to the stepping motor (8).

5. A high-temperature and high-pressure test chamber for internal parts of a well logging instrument according to claim 4, characterized in that: The oil circuit block (7) is connected to the second pump head (6) via a second oil pipe (61), and the oil circuit block (7) is connected to the first pump head (5) via a first oil pipe (51).

6. A high-temperature and high-pressure test chamber for internal parts of a well logging instrument according to claim 4, characterized in that: A through hole is formed at one end of the pressure regulating joint (33) extending into the oil guide hole (34), and two oil regulating holes (71) on the oil circuit block (7) correspond to the pressure joint (31) and the exhaust joint (32) respectively.