Multi-station well control equipment pressure test monitoring device and monitoring method thereof

Abstract

The invention relates to the field of well control equipment detection, in particular to a multi-station well control equipment pressure test monitoring device and a monitoring method thereof. The two pairs of mounting frames are fixed to the upper surface of the bottom frame at equal intervals, and connecting holes are formed in the tops of the mounting frames; the two pairs of mounting frames are detachably connected with the hydraulic control unit through connecting holes respectively, and the hydraulic control unit is provided with a medium outlet and a first liquid outlet; one end of the main pipe is detachably connected with a medium inlet; the two pairs of flow dividing connecting pieces are detachably communicated with the front side and the rear side of the main pipe respectively, and each flow dividing connecting piece is detachably communicated with one hydraulic control unit. According to the invention, pressure test can be carried out on a plurality of pressure test devices at the same time, and pressure test can be carried out on a single pressure test device independently, so that the detection efficiency is improved, and the problem of instability caused by too many connection times of pressure test devices is reduced.

Description

Technical Field

[0001] The present invention relates to the field of well control equipment detection, and more particularly to a multi-station well control equipment pressure test monitoring device and a monitoring method thereof. Background Art

[0002] In the existing well control equipment pressure test system, the workpiece to be tested is manually connected to the pressure test detection equipment, and only one workpiece can be tested at a time. Since the installation of the workpiece to be tested and the test time are relatively long, the pressure test efficiency is low. Summary of the Invention

[0003] The present invention provides a multi-station well control equipment pressure test monitoring device and a monitoring method thereof, which solve the problems of low test automation degree and slow pressure test efficiency, and realize multi-station and independent control of pressure test.

[0004] The technical problems solved by the present invention can be achieved by the following technical solutions: A multi-station well control equipment pressure test monitoring device includes: A chassis; Two pairs of mounting frames, which are equidistantly fixed on the upper surface of the chassis, and connection holes are opened at the tops of the mounting frames; A hydraulic control unit, and the two pairs of mounting frames are respectively detachably connected to the hydraulic control unit through the connection holes. The hydraulic control unit has a medium outlet and a first drain port; A main pipe, and one end of the main pipe is detachably connected with a medium inlet; Two pairs of shunt connectors, which are respectively detachably communicated on the front and back sides of the main pipe, and each shunt connector is detachably communicated with one of the hydraulic control units. Further, the chassis is of a rectangular frame structure, and a two-layer bearing plate is fixed inside the chassis.

[0005] Further, a first high-pressure sensor is detachably connected to the main pipe.

[0006] Further, the hydraulic control unit includes a pneumatic pressure maintaining valve, an electric pressure relief valve, a five-way joint, a four-way joint, a manual high-pressure unloading valve, a high-pressure display meter, a second high-pressure sensor, a low-pressure sensor and a connecting pipe. The pneumatic pressure maintaining valve and the electric pressure relief valve are both detachably connected to the mounting frame. The inlet of the pneumatic pressure maintaining valve is detachably communicated with the shunt connector. The five-way joint is respectively detachably communicated with the outlet of the pneumatic pressure maintaining valve, the high-pressure display meter, the connecting pipe and the manual high-pressure unloading valve. One of the five-way joints is a medium outlet. The four-way joint is respectively detachably communicated with the other end of the connecting pipe, the inlet of the electric pressure relief valve, the low-pressure sensor and the second high-pressure sensor. The outlet of the electric pressure relief valve is detachably connected to the first drain port. The manual high-pressure unloading valve has a second drain port.

[0007] Further, the other end of the main pipe is detachably connected with a one-way valve.

[0008] A pressure test monitoring method for a multi-station well control device at least includes the above-mentioned pressure test monitoring device for a multi-station well control device, and further includes the following steps: First step, connection: The water injection device and the high-pressure water injection device are respectively communicated with the medium inlet and the one-way valve, then the medium outlet is communicated with the device to be tested, and at the same time, the first liquid discharge port is communicated with the recovery device; Second step, water injection: Pumped in through the water injection device by the one-way valve, water enters the device to be tested through the main pipe, the shunt connector, the pneumatic pressure maintaining valve, the five-way joint and the medium outlet. At the same time, observe the numerical change of the low-pressure sensor. If the value increases, it means that the device to be tested is filled with water, and then turn off the water injection device; Third step, pressure increase: Start the high-pressure water injection device, pump in pressurized water through the medium inlet to increase the pressure of the device to be tested. At the same time, observe the first high-pressure sensor and the second high-pressure sensor. When the test pressure is reached, start the pneumatic pressure maintaining valve, and the pneumatic pressure maintaining valve intercepts and maintains the pressure to make the device to be tested hold the load. By observing the numerical change of the second high-pressure sensor within a period of time, judge whether the device to be tested meets the re-use standard; During high-pressure detection, the second high-pressure sensor is taken as the standard, and during low-pressure detection, the low-pressure sensor is taken as the standard; Fourth step, pressure relief: Start the electric pressure relief valve, and the water in the device to be tested flows back into the five-way joint through the medium outlet, then enters the four-way joint through the connecting pipe, and then is discharged through the electric pressure relief valve and the first liquid discharge port; When the electric pressure relief valve does not act, open the manual high-pressure unloading valve, and the water is discharged from the second liquid discharge port through the five-way joint and the manual high-pressure unloading valve.

[0009] Fifth step, after the test is completed, disconnect the tested device from the medium outlet.

[0010] The beneficial effects of the present invention are as follows: Due to the adoption of the main pipe and the shunt connector, the problem that the test requires separate connection of the pressure test equipment is effectively solved. Furthermore, multiple tests can be carried out simultaneously, or a single one can be independently controlled for testing. Moreover, when multiple tests are carried out simultaneously, not only the detection efficiency is improved, but also the problem of instability caused by excessive connection times of the pressure test equipment is reduced.

[0011] Due to the adoption of the electric pressure relief valve and the first liquid discharge port, the problem that the water entering the device to be tested returns along the original path and is reused many times, which may cause serious fouling and internal blockage, is effectively solved. Furthermore, independent liquid discharge is realized, preventing the problems of internal blockage, pollution and corrosion caused by the water returning along the original path.

[0012] Due to the adoption of a one-way valve, the problems of energy loss caused by the long-term operation of high-pressure pump water equipment required for early water injection and the possible impact damage to the pipeline caused by the sudden increase in internal pressure are effectively solved. Therefore, in the early stage, a low-pressure water pipe can be used for connection and water injection, and after filling, high-pressure water injection can be carried out for pressure boosting.

[0013] Due to the adoption of a manual high-pressure unloading valve, the problem that the electric pressure relief valve cannot operate normally for pressure relief is effectively solved. Furthermore, by opening the manual high-pressure unloading valve and then draining water through the second drain port, the pressure relief can be completed. Brief Description of the Drawings

[0014] The present invention will be further described below in conjunction with the drawings and embodiments.

[0015] Figure 1 It is a schematic structural diagram of the present invention.

[0016] Figure 2 It is a sectional view of the present invention.

[0017] In the figure: 1 - chassis; 2 - mounting frame; 3 - medium outlet; 4 - first drain port; 5 - main pipe; 6 - medium inlet; 7 - shunt connector; 8 - second-layer bearing plate; 9 - first high-pressure sensor; 10 - pneumatic pressure-holding valve; 11 - electric pressure relief valve; 12 - five-way joint; 13 - four-way joint; 14 - manual high-pressure unloading valve; 15 - high-pressure display meter; 16 - second high-pressure sensor; 17 - low-pressure sensor; 18 - connecting pipe; 19 - second drain port; 20 - one-way valve. Specific Embodiments

[0018] Embodiment 1: Refer to Figure 1-2 , which is a schematic structural diagram of Embodiment 1 of the present invention. A multi-station well control equipment pressure test monitoring device includes: Chassis 1; Two pairs of mounting frames 2, the two pairs of mounting frames 2 are fixedly arranged on the upper surface of the chassis 1 at equal intervals, and connection holes are provided at the tops of the mounting frames 2; A liquid control unit, the two pairs of mounting frames 2 are respectively detachably connected with the liquid control unit through the connection holes, and the liquid control unit has a medium outlet 3 and a first drain port 4; Main pipe 5, one end of the main pipe 5 is detachably connected with a medium inlet 6; Two pairs of shunt connectors 7, the two pairs of shunt connectors 7 are respectively detachably communicated with the front and rear sides of the main pipe 5, and each shunt connector 7 is detachably communicated with one of the liquid control units..

[0019] During actual use: Water is used as the pressure test medium. The chassis 1 is placed on a flat ground or fixedly connected to the ground through expansion bolts. Then, the pressure supply device is connected to the medium inlet 6. The pressure supply device pumps the pressurized water into the main pipe 5 and then pumps it into the hydraulic control unit through the shunt connector 7 respectively. The medium outlet 3 of the hydraulic control unit is connected to the device under test, so that the water is pumped into the device under test and pumped to the specified test pressure. Then, the hydraulic control unit intercepts the flow, so that the device under test maintains pressure for a period of time, and the pressure fluctuation during pressure holding is observed, so as to judge whether there are problems such as sealing or breakage. After the pressure test is completed, the liquid is drained through the first drain port 4, so as to divert the test water and prevent backflow from polluting the hydraulic control unit and the main pipe 5.

[0020] The function of the mounting frame 2 is to raise the position of the hydraulic control unit on the chassis 1 to facilitate the assembly of the hydraulic control unit and the connection of the device under test.

[0021] Embodiment 2: Refer to Figure 2 , the difference of this embodiment is that: the chassis 1 is a rectangular frame structure, and a two-layer bearing plate 8 is fixed inside the chassis 1.

[0022] During actual use: The two-layer bearing plate 8 can conveniently prevent tools or externally loaded valves, etc., and at the same time play a role in enhancing the stability of the chassis 1.

[0023] Embodiment 3: Refer to Figure 1 , the difference of this embodiment is that: a first high-pressure sensor 9 is detachably connected to the main pipe 5.

[0024] During actual use: Through the first high-pressure sensor 9, the pressure value of the feed can be monitored in real time, which is convenient for observation and adjustment, and data comparison with the second high-pressure sensor 16 to judge whether the pneumatic pressure maintaining valve 10 works normally or whether there is backflow during discharge.

[0025] Embodiment 4: Refer to Figure 1-2, the difference in this embodiment is that: the liquid control unit includes a pneumatic pressure maintaining valve 10, an electric pressure relief valve 11, a five-way joint 12, a four-way joint 13, a manual high-pressure unloading valve 14, a high-pressure display meter 15, a second high-pressure sensor 16, a low-pressure sensor 17 and a connecting pipe 18. The pneumatic pressure maintaining valve 10 and the electric pressure relief valve 11 are both detachably connected to the mounting bracket 2. The inlet of the pneumatic pressure maintaining valve 10 is detachably communicated with the shunt connector 7. The five-way joint 12 is respectively detachably communicated with the outlet of the pneumatic pressure maintaining valve 10, the high-pressure display meter 15, the connecting pipe 18 and the manual high-pressure unloading valve 14. One of the five-way joint 12 is the medium outlet 3. The four-way joint 13 is respectively detachably communicated with the other end of the connecting pipe 18, the inlet of the electric pressure relief valve 11, the low-pressure sensor 17 and the second high-pressure sensor 16. The outlet of the electric pressure relief valve 11 is detachably connected to the first drain port 4. The manual high-pressure unloading valve 14 has a second drain port 19.

[0026] During actual use: Water passes through the one-way valve 20, through the main pipe 5 and the shunt connector 7 into the pneumatic pressure maintaining valve 10, and then enters the device to be tested through the medium outlet 3 of the five-way joint 12. After the low-pressure water enters, at the same time, since the five-way joint 12 and the four-way joint 13 are connected through the connecting pipe 18, the low-pressure sensor 17 and the second high-pressure sensor 16 are simultaneously affected by the pressure and their numerical values fluctuate. When the numerical value of the low-pressure sensor 17 changes greatly, it indicates that the device to be tested is already filled with water. Then, stop the injection of the water injection device, and then start the high-pressure water injection device. Enter through the medium inlet 6, apply pressure, and judge whether the working opening state of the pneumatic pressure maintaining valve 10 is normal by observing the numerical changes of the first high-pressure sensor 9 and the second high-pressure sensor 16 and making a comparison. When the specified pressure is applied, start the pneumatic pressure maintaining valve 10 to intercept and maintain the pressure, so that the device to be tested holds the pressure and is observed for a period of time. At the same time, observe the second high-pressure sensor 16 to respectively judge whether there are problems such as loose sealing or damage in the corresponding device to be tested, or other situations of pressure relief, and record and check them. After the detection is completed, start the electric pressure relief valve 11, and the water in the device to be tested is discharged through the five-way joint 12, the connecting pipe 18, the four-way joint 13, the electric pressure relief valve 11 and the first drain port 4, thereby reducing the problem of equipment pollution caused by the repeated use of water.

[0027] When performing low-pressure testing, the low-pressure sensor 17 is used as the main observation object.

[0028] In this embodiment, the ranges of low pressure and high pressure are: high pressure 10.5 - 70 Mpa, low pressure 1.4 - 2.1 Mpa.

[0029] The pressure sensor can be replaced according to the actual use situation to achieve the numerical changes and fluctuation information that meet the observation standards.

[0030] Embodiment 5: Refer to Figure 1, the difference in this embodiment is that: the other end of the main pipe 5 is detachably connected with a one-way valve 20.

[0031] During actual use: the one-way valve 20 is connected to the water injection device. First, fill the inside of the pressure test monitoring device and the device to be tested with water, and then pump high-pressure water through the high-pressure device. This can reduce the operation time of the high-pressure device and energy consumption, and at the same time reduce the impact on the internal pipeline of the pressure test monitoring device, thereby preventing damage to the sensor.

[0032] Embodiment 6: Refer to Figure 1-2 , a pressure test monitoring method for a multi-station well control device, at least including the above-mentioned pressure test monitoring device for a multi-station well control device, and further including the following steps: The first step is connection. The water injection device and the high-pressure water injection device are respectively connected to the medium inlet 6 and the one-way valve 20, then the medium outlet 3 is connected to the device to be tested, and at the same time the first drain port 4 is connected to the recovery device; The second step is water injection. Pumped in through the water injection device by the one-way valve 20, the water enters the device to be tested through the main pipe 5, the shunt connector 7, the pneumatic pressure maintaining valve 10, the five-way joint 12 and the medium outlet 3. At the same time, observe the numerical change of the low-pressure sensor 17. If the value increases, it means that the device to be tested is full of water, and then turn off the water injection device; The third step is pressure increase. Start the high-pressure water injection device, pump pressurized water through the medium inlet 6 to increase the pressure of the device to be tested. At the same time, observe the first high-pressure sensor 9 and the second high-pressure sensor 16. When the test pressure is reached, start the pneumatic pressure maintaining valve 10, and the pneumatic pressure maintaining valve 10 intercepts and maintains the pressure to keep the device to be tested under load. By observing the numerical change of the second high-pressure sensor 16 within a period of time, judge whether the device to be tested meets the re-use standard; During high-pressure detection, the second high-pressure sensor 16 is used as the standard. During low-pressure detection, the low-pressure sensor 17 is used as the standard; The fourth step is pressure relief. Start the electric pressure relief valve 11, and the water in the device to be tested flows back into the five-way joint 12 through the medium outlet 3, then enters the four-way joint through the connecting pipe 18, and then is discharged through the electric pressure relief valve 11 and the first drain port 4; When the electric pressure relief valve 11 does not act, open the manual high-pressure unloading valve 14, and the water is discharged from the second drain port 19 through the five-way joint 12 and the manual high-pressure unloading valve 14.

[0033] The fifth step is that after the test is completed, disconnect the tested device from the medium outlet 3.

[0034] The above has described the embodiments of the present invention in detail with reference to the drawings, but the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art, various changes can be made without departing from the purpose of the present invention, and they are all within the protection scope of this technology.

Claims

1. A multi-station well control equipment pressure test monitoring device, characterized in that, Comprising: A chassis (1); Two pairs of mounting brackets (2), the two pairs of mounting brackets (2) are fixedly arranged at equal intervals on the upper surface of the chassis (1), and connection holes are formed at the tops of the mounting brackets (2); A liquid control unit, the two pairs of mounting brackets (2) are respectively detachably connected with the liquid control unit through the connection holes, and the liquid control unit has a medium outlet (3) and a first liquid discharge port (4); A main pipe (5), one end of the main pipe (5) is detachably connected with a medium inlet (6); Two pairs of shunt connectors (7), the two pairs of shunt connectors (7) are respectively detachably communicated with the front and rear sides of the main pipe (5), and each shunt connector (7) is detachably communicated with one of the liquid control units.

2. The pressure test monitoring device for a multi-station well control device according to claim 1, characterized in that, The chassis (1) is of a rectangular frame structure, and a two-layer bearing plate (8) is fixed inside the chassis (1).

3. The pressure test monitoring device for a multi-station well control device according to claim 1, characterized in that, A first high-pressure sensor (9) is detachably connected to the main pipe (5).

4. A multi-station well control equipment pressure test monitoring device according to claim 1, characterized in that, The liquid control unit includes a pneumatic pressure maintaining valve (10), an electric pressure relief valve (11), a five-way joint (12), a four-way joint (13), a manual high-pressure unloading valve (14), a high-pressure display meter (15), a second high-pressure sensor (16), a low-pressure sensor (17) and a connecting pipe (18). The pneumatic pressure maintaining valve (10) and the electric pressure relief valve (11) are both detachably connected to the mounting bracket (2). The inlet of the pneumatic pressure maintaining valve (10) is detachably communicated with the shunt connector (7). The five-way joint (12) is respectively detachably communicated with the outlet of the pneumatic pressure maintaining valve (10), the high-pressure display meter (15), the connecting pipe (18) and the manual high-pressure unloading valve (14). One of the five-way joints (12) is the medium outlet (3). The four-way joint (13) is respectively detachably communicated with the other end of the connecting pipe (18), the inlet of the electric pressure relief valve (11), the low-pressure sensor (17) and the second high-pressure sensor (16). The outlet of the electric pressure relief valve (11) is detachably connected to the first liquid discharge port (4). The manual high-pressure unloading valve (14) has a second liquid discharge port (19).

5. A multi-station well control equipment pressure test monitoring device according to claim 1, characterized in that, The other end of the main pipe (5) is detachably connected with a check valve (20).

6. A pressure test monitoring method for a multi-station well control device, at least including a pressure test monitoring device for a multi-station well control device according to any one of claims 1-5, characterized in that, It further includes the following steps: The first step, connection. The water injection equipment and the high-pressure water injection equipment are respectively communicated with the medium inlet (6) and the check valve (20), then the medium outlet (3) is communicated with the equipment to be tested, and at the same time the first liquid discharge port (4) is communicated with the recovery equipment; The second step, water injection. It is pumped in through the water injection equipment by the check valve (20), and the water enters the equipment to be tested through the main pipe (5), the shunt connector (7), the pneumatic pressure maintaining valve (10), the five-way joint (12) and the medium outlet (3). At the same time, observe the numerical change of the low-pressure sensor (17). If the value increases, it means that the equipment to be tested is full of water, and then the water injection equipment is closed; The third step, pressure boosting. Start the high-pressure water injection equipment, pump in pressurized water through the medium inlet (6) to boost the pressure of the equipment to be tested. At the same time, observe the first high-pressure sensor (9) and the second high-pressure sensor (16). When the test pressure is reached, start the pneumatic pressure maintaining valve (10), and the pneumatic pressure maintaining valve (10) intercepts and maintains the pressure to make the equipment to be tested hold the load. By observing the numerical change of the second high-pressure sensor (16) within a period of time, judge whether the equipment to be tested meets the re-use standard; During high-pressure detection, the high-pressure sensor II (16) shall be used as the standard. During low-pressure detection, the low-pressure sensor (17) shall be used as the standard; In the fourth step, relieve the pressure. Start the electric pressure relief valve (11). The water in the device under test flows back into the five-way joint (12) through the medium outlet (3), then enters the four-way joint through the connecting pipe (18), and then is discharged through the electric pressure relief valve (11) and the first liquid discharge port (4); When the electric pressure relief valve (11) does not act, open the manual high-pressure unloading valve (14). The water is discharged from the second liquid discharge port (19) through the five-way joint (12) and the manual high-pressure unloading valve (14); In the fifth step, after the test is completed, disconnect the device under test from the medium outlet (3).

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