Oil well control device with multi-channel structure

Abstract

The utility model relates to the technical field of well control devices, and discloses an oil well control device with a multi-channel structure, which comprises a casing pipe, an oil pipe is connected to the outer wall of one side of the casing pipe, the other end of the oil pipe is connected with a flow dividing box, and a pressure dividing table is connected to the inner side of the flow dividing box. An L-shaped pressure dividing cavity is formed in the connecting position of the flow dividing box and the pressure dividing table, a circular sealing plate is arranged on the inner side of the pressure dividing cavity, a sealing ring is laid on one side of the sealing plate, a screw rod is fixed to the outer wall of the other side of the sealing plate, and the screw rod penetrates through the outer wall of one side of the pressure dividing table; a rotating disc is fixed to the outer wall of the end, away from the sealing plate, of the screw. The oil well control device with the multi-channel structure is provided with the oil tank, high casing pressure oil liquid is collected through the opened oil pipe and the pressure dividing cavity, the situation that casing pressure rises again due to backflow of the oil liquid is prevented, the casing pressure adjusting speed can be increased through the double-pipeline design, and potential safety hazards are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of well control devices, in particular to an oil well control device with a multi-channel structure. Background Art

[0002] Well control devices refer to equipment and tools used in drilling operations, generally including wellhead blowout preventers, well control manifolds, and well control instruments for monitoring and forecasting formation pressure, etc. They play a role in maintaining the stability of oil well operations and preventing overpressure eruptions. Common well control devices relieve casing pressure through multi-channel structures and reasonably control casing pressure.

[0003] After searching, it is found that there is an oil well casing pressure control device with a publication number of CN218150864U, which includes: a pressure regulating valve fixed in the middle position of the connecting pipe, and a fixing box fixed on the inner top surface of the pressure regulating valve, which is used to solve the problem that traditional control devices are prone to cause pressure or oil reflux, affecting the normal exploitation of oil wells. The control device adopts a single-channel shunt pressure relief structure. When the pressure is high, it cannot quickly and stably relieve the pressure, and the casing pressure relief efficiency is low. For this reason, we propose an oil well control device with a multi-channel structure. Utility Model Content

[0004] The purpose of the utility model is to provide an oil well control device with a multi-channel structure to solve the problems raised in the above background technology.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solution: an oil well control device with a multi-channel structure, comprising:

[0006] A casing, an outer wall of one side of the casing is connected to an oil pipe, the other end of the oil pipe is connected to a shunt box, the inner side of the shunt box is connected to a pressure dividing platform, an L-shaped pressure dividing chamber is provided at the connection between the shunt box and the pressure dividing platform, a circular sealing plate is arranged on the inner side of the pressure dividing chamber, a sealing ring is laid on one side of the sealing plate, a screw is fixed to the outer wall of the other side of the sealing plate, and the screw penetrates to the outer wall of one side of the pressure dividing platform, and a turntable is fixed to the outer wall of the screw away from the sealing plate;

[0007] A shunt pipe is connected to one end of the pressure dividing chamber away from the shunt box, and the other end of the shunt pipe is connected to an oil tank.

[0008] Furthermore, the sleeve is connected to the diverter box through the oil pipe, the diverter box is connected to the pressure dividing platform through the pressure dividing cavity, and the pressure dividing platform is connected to the oil tank through the diverter pipe.

[0009] Furthermore, the screw is rotatably connected to the diverter box through a rotating disk, and the sealing ring is telescopically connected to the pressure dividing chamber through a sealing plate and the screw, and the oil tank forms a sealing structure through a diverter pipe and a sealing ring.

[0010] Furthermore, a solenoid valve is installed in the middle of the oil pipe, and an oil pressure gauge is installed at one end of the oil pipe close to the diverter box.

[0011] Furthermore, the oil pipe is connected to the diverter box through the solenoid valve and the oil pressure gauge, and the oil pipe is evenly distributed along the outer wall of one side of the casing.

[0012] Furthermore, a valve is connected to the top of the oil tank, and a corrugated plate is laid on the inner lower surface of the oil tank.

[0013] Furthermore, the oil tank and the valve are connected to each other, and the wave plates are evenly distributed at equal distances along the inner lower surface of the oil tank.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The oil well control device with a multi-channel structure is provided with an oil tank, which collects high casing pressure oil through an open oil pipe and a pressure-dividing chamber to prevent the backflow of this part of the oil and cause the casing pressure to rise again. The dual-pipeline design can increase the casing pressure adjustment rate and reduce safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the combined working state structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the cross-sectional structure of the shunt box and the voltage divider of the utility model;

[0018] Figure 3 It is a schematic diagram of the cross-sectional structure of the fuel tank part of the utility model.

[0019] In the figure: 1. casing; 2. oil pipe; 3. diverter box; 4. pressure dividing platform; 5. pressure dividing chamber; 6. sealing plate; 7. sealing ring; 8. screw; 9. turntable; 11. diverter pipe; 12. oil tank; 13. solenoid valve; 14. oil pressure gauge; 15. valve; 16. corrugated plate. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] The utility model provides an oil well control device with a multi-channel structure through improvement. Figure 1-Figure 2 , including: a casing 1, an outer wall of one side of the casing 1 is connected to an oil pipe 2, and the oil pipe 2 is evenly distributed along the outer wall of one side of the casing 1, and the distributed multiple oil pipes 2 are used to relieve the pressure of the casing 1 according to the oil well production situation; the other end of the oil pipe 2 is connected to a diverter box 3, and the casing 1 is connected to the diverter box 3 through the oil pipe 2, and the inner side of the diverter box 3 is connected to a pressure dividing platform 4, and an L-shaped pressure dividing chamber 5 is opened at the connection between the diverter box 3 and the pressure dividing platform 4, and the diverter box 3 is connected to the pressure dividing platform 4 through the pressure dividing chamber 5, and the pressure dividing chamber 5 is used to connect the diverter box 3 and the pressure dividing platform 4, so that the oil can flow into the oil tank 12 from the opened pressure dividing chamber 5; a circular sealing plate 6 is arranged on the inner side of the pressure dividing chamber 5, and a sealing ring 7 is laid on one side of the sealing plate 6, and the sealing ring 7 is used to strengthen and stabilize the sealing effect of the sealing plate 6 on the pressure dividing chamber 5; the outer wall on the other side of the sealing plate 6 is fixed There is a screw 8, and the screw 8 penetrates to the outer wall of one side of the pressure dividing platform 4. A turntable 9 is fixed to the outer wall of the screw 8 away from the sealing plate 6. The screw 8 is rotatably connected with the diverter box 3 through the turntable 9, and the sealing ring 7 is telescopically connected with the pressure dividing chamber 5 through the sealing plate 6 and the screw 8. The turntable 9 adjusts the position of the sealing plate 6 in the pressure dividing chamber 5 by rotating the screw 8; the end of the pressure dividing chamber 5 away from the diverter box 3 is connected with a diverter pipe 11, and the other end of the diverter pipe 11 is connected with an oil tank 12, and the pressure dividing platform 4 is connected to the oil tank 12 through the diverter pipe 11, and the oil tank 12 forms a sealing structure through the diverter pipe 11 and the sealing ring 7. The set oil tank 12 collects high casing pressure oil through the opened oil pipe 2 and the pressure dividing chamber 5 to prevent this part of the oil from flowing back and causing the casing pressure to rise again, and the dual-pipeline design can increase the casing pressure adjustment rate and reduce safety hazards.

[0022] See also Figure 1 , an oil well control device with a multi-channel structure, including: a solenoid valve 13 is installed in the middle of the oil pipe 2, and an oil pressure gauge 14 is installed at one end of the oil pipe 2 close to the diversion box 3. The oil pipe 2 is connected with the diversion box 3 through the solenoid valve 13 and the oil pressure gauge 14. The solenoid valve 13 is used by the staff to open and close the solenoid valve 13 according to the casing pressure, open a suitable number of oil pipes 2 to reduce the casing pressure, and the oil pressure gauge 14 is convenient for monitoring the hydraulic pressure flowing through the oil pipe 2.

[0023] See also Figure 1 and Figure 3, an oil well control device with a multi-channel structure, comprising: a valve 15 is connected to the top of an oil tank 12, the oil tank 12 and the valve 15 are connected, a wave plate 16 is laid on the inner lower surface of the oil tank 12, and the wave plate 16 is evenly distributed along the inner lower surface of the oil tank 12, the valve 15 and the wave plate 16 are used to reduce the huge pressure difference generated when the oil in the overpressure pipe enters the oil tank 12, the original gas in the oil tank 12 is discharged through the valve 15, and the oil is used to accommodate the oil, and the inflowing oil reduces the surge through the wave plate 16, thereby reducing the impact of the oil on the inner wall of the oil tank 12.

[0024] Working principle: For this type of oil well control device with a multi-channel structure, the staff first controls the opening and closing of the oil pipe 2 connected to the side of the casing 1 through the electromagnetic valve 13 according to the casing pressure of the casing 1. When the casing pressure is large, in order to relieve the casing pressure, the over-pressure oil will flow through the oil pipe 2 into the diverter box 3 through the opened electromagnetic valve 13, and the pressure will be released through the diverter box 3. When the casing pressure increases further and the oil pressure is difficult to release, the staff can turn the turntable 9 to make the turntable 9 drive the screw 8 and the sealing plate 6 to be drawn out from the pressure dividing chamber 5 close to the pressure dividing platform 4, and then the pressure will be released. The pressure-dividing chamber 5 is opened to allow the over-pressure oil to enter the oil tank 12 through the pressure-dividing chamber 5 and the shunt pipe 11, thereby realizing multi-channel synchronous pressure relief, further improving the pressure relief efficiency, and reducing the safety hazard caused by the increase in casing pressure. When the pressure-dividing chamber 5 is closed by the sealing plate 6, the sealing ring 7 laid on the sealing plate 6 can further improve the sealing performance to prevent oil penetration. Subsequently, the oil pressure in the oil pipe 2 can be monitored by the oil pressure gauge 14, and when the over-pressure oil enters the oil tank 12, the gas in the oil tank 12 is released through the valve 15, and the surge hazard of the oil is reduced through the wave plate 16.

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An oil well control device with a multi-channel structure, characterized in that: include: A casing (1), wherein an outer wall of one side of the casing (1) is connected to an oil pipe (2), the other end of the oil pipe (2) is connected to a shunt box (3), the inner side of the shunt box (3) is connected to a pressure dividing platform (4), an L-shaped pressure dividing chamber (5) is provided at the connection between the shunt box (3) and the pressure dividing platform (4), a circular sealing plate (6) is arranged on the inner side of the pressure dividing chamber (5), a sealing ring (7) is laid on one side of the sealing plate (6), a screw (8) is fixed to the outer wall of the other side of the sealing plate (6), and the screw (8) penetrates to the outer wall of one side of the pressure dividing platform (4), and a rotating disk (9) is fixed to the outer wall of the screw (8) away from the sealing plate (6); A shunt pipe (11) is connected to one end of the pressure dividing chamber (5) away from the shunt box (3), and the other end of the shunt pipe (11) is connected to an oil tank (12).

2. The oil well control device with a multi-channel structure according to claim 1, characterized in that: The sleeve (1) is connected to the flow divider box (3) through the oil pipe (2), the flow divider box (3) is connected to the pressure divider platform (4) through the pressure divider chamber (5), and the pressure divider platform (4) is connected to the oil tank (12) through the flow divider pipe (11).

3. The oil well control device with a multi-channel structure according to claim 1, characterized in that: The screw rod (8) is rotatably connected to the flow dividing box (3) via a rotating disk (9), and the sealing ring (7) is telescopically connected to the pressure dividing chamber (5) via a sealing plate (6) and the screw rod (8), and the oil tank (12) forms a sealing structure via a flow dividing pipe (11) and the sealing ring (7).

4. The oil well control device with a multi-channel structure according to claim 1, characterized in that: The middle part of the oil pipe (2) is equipped with a solenoid valve (13), and one end of the oil pipe (2) close to the diverter box (3) is equipped with an oil pressure gauge (14).

5. The oil well control device with a multi-channel structure according to claim 4, characterized in that: The oil pipe (2) is connected to the diverter box (3) via a solenoid valve (13) and an oil pressure gauge (14), and the oil pipe (2) is evenly distributed along the outer wall of one side of the casing (1).

6. The oil well control device with a multi-channel structure according to claim 1, characterized in that: The top end of the oil tank (12) is connected to a valve (15), and the inner lower surface of the oil tank (12) is paved with a corrugated plate (16).

7. The oil well control device with a multi-channel structure according to claim 6, characterized in that: The oil tank (12) and the valve (15) are connected to each other, and the wave plates (16) are evenly distributed at equal distances along the inner lower surface of the oil tank (12).

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