High-pressure all-purpose well killing choke manifold system

Abstract

The utility model discloses a high-pressure all-purpose well killing choke manifold system, which belongs to the field of oil drilling well control equipment, and comprises an upper layer structure and a lower layer structure, the upper layer structure comprises a choke manifold and a pressure monitoring device, and the lower layer structure comprises a well killing manifold, a blowout manifold, a liquid level monitoring manifold and a slurry filling manifold. A liquid-gas separation liquid inlet pipeline connector is arranged at an outlet of the lower layer structure, and a chip installation groove used for installing an information tracking chip is further formed in the lower layer structure. The liquid level monitoring function is added, the liquid level height of a shaft can be monitored in real time, the well leakage condition is judged, and the slurry density is adjusted; the liquid level change can be observed in time, and the well control safety risk is reduced; a slurry pouring function is added; isolating valves are arranged on upstream and downstream of a throttle valve in the throttle manifold; a chip mounting groove is formed, so that powerful support is provided for informatization construction of well control equipment; and during ultrahigh pressure blowout, the three blowout manifolds work at the same time, the blowout speed is three times of the original blowout speed, and the well control safety risk is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the field of oil drilling well control equipment, in particular to a high-pressure all-purpose well-killing throttling manifold system. Background Art

[0002] The well-killing choke manifold system is the core equipment for well control pressure control in oil drilling operations. With the continuous advancement of oil exploration and development technology, users have put forward diversified functional requirements for well-killing choke manifolds, mainly including well killing, throttling, multi-channel blowout, mud injection, wellbore liquid level monitoring, harmful gas separation, information tracking, etc.

[0003] The existing technology only provides well killing, throttling, and blowout functions, and has serious functional defects. In the existing technology, no isolation gate valve is set downstream of the throttle valve in the throttle manifold, the throttle valve cannot be maintained online, and the structure does not meet the standard requirements. If all the above functions are met, the whole equipment needs to be disassembled and a large number of spare parts need to be added. The original parts cannot be reused, the material waste is serious, and the rectification cost is high. Utility Model Content

[0004] The utility model aims to provide a high-pressure all-purpose well-killing throttling manifold system to solve the problem that the existing manifold system in oil production has a single function and is difficult to meet user needs.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] The utility model discloses a high-pressure all-purpose well-killing throttling manifold system, comprising an upper structure and a lower structure, wherein the upper structure comprises a throttling manifold and a pressure monitoring device, and the lower structure comprises a well-killing manifold, a blowout manifold, a liquid level monitoring manifold and a mud perfusion manifold, a liquid-gas separation liquid inlet pipeline interface is arranged at the outlet of the lower structure, and a chip mounting groove for mounting an information tracking chip is also arranged on the lower structure.

[0007] Furthermore, the number of the well-killing manifolds is set to two, and the two well-killing manifolds are symmetrically arranged on the left and right; the well-killing manifold on the right includes a first union flange, a first check valve, a first tee and a first gate valve connected in sequence from right to left, and the well-killing manifold on the left includes a second union flange, a second check valve, a second tee and a second gate valve connected in sequence from left to right, and the first gate valve and the second gate valve are connected to the blowdown manifold.

[0008] Furthermore, the nozzle manifold includes a conventional nozzle manifold and two spare nozzle manifolds, wherein the conventional nozzle manifold is arranged in the middle, and the two spare nozzle manifolds are arranged on the left and right sides of the conventional nozzle manifold.

[0009] Furthermore, the conventional blowdown manifold includes six-way pipes, and a double-sided flange is connected to the front interface of the six-way pipes, the left interface of the six-way pipes is connected to the second gate valve, the right interface of the six-way pipes is connected to the first gate valve, the rear interface of the six-way pipes is connected to the first interface of the Y-shaped tee, the second interface of the Y-shaped tee is connected to the front end of the fifth gate valve, the rear end of the fifth gate valve is connected to the front interface of the four-way pipe, and the rear interface of the four-way pipe is connected to the first blowdown pipeline.

[0010] Furthermore, the spare blowdown manifold on the left side includes the double-sided flange, the six-way, the second gate valve, the second tee, and the second blowdown pipeline connected to the rear interface of the second tee; the spare blowdown manifold on the right side includes the double-sided flange, the six-way, the first gate valve, the first tee, the sixth gate valve connected to the rear interface of the first tee, and the third blowdown pipeline connected to the rear side of the sixth gate valve.

[0011] Furthermore, the liquid level monitoring manifold includes the double-sided flange, the six-way valve, the Y-shaped tee, a seventh gate valve connected to the third interface of the Y-shaped tee, a joint flange connected to the other end of the seventh gate valve, and a sensor connected to the other side of the joint flange.

[0012] Furthermore, the mud injection manifold includes the first union flange, the first check valve, the first tee, the sixth gate valve and the third blowdown line connected together.

[0013] Furthermore, the throttling manifold includes a first flange short-circuit, the lower end of the first flange short-circuit is connected to the upper interface of the six-way, the upper end of the first flange short-circuit is connected to the third gate valve, the top of the third gate valve is connected to the throttling valve, the rear side of the throttling valve is connected to the erosion-resistant short-circuit, the rear end of the erosion-resistant short-circuit is connected to the first interface of the third three-way, the second interface of the third three-way is connected to a blind flange, the third interface of the third three-way is connected to a fourth gate valve, the lower end of the fourth gate valve is connected to the second flange short-circuit, and the other end of the second flange short-circuit is connected to the upper interface of the four-way.

[0014] Furthermore, the pressure monitoring device includes an eighth gate valve, the lower end of the eighth gate valve is connected to the upper interface of the six-way, the upper end of the eighth gate valve is connected to an instrument flange, the front side of the instrument flange is connected to a needle valve, and pressure gauges are arranged above the instrument flange and above the needle valve.

[0015] Furthermore, the liquid-gas separation liquid inlet pipeline interface includes a liquid-gas separation outlet pipeline, and the liquid-gas separation outlet pipeline is connected to the right side interface of the four-way valve.

[0016] Compared with the prior art, the beneficial technical effects of the utility model are:

[0017] The utility model has complete functions, and its uses include throttling, well killing, blowout, liquid level monitoring, mud injection, pressure monitoring, information tracking, etc., which fully meet the functional requirements of well control manifolds in oil and gas production. The overall structure is compact and the layout is reasonable, which fully realizes the multi-purpose of one machine; the liquid level monitoring function is added, which can monitor the liquid level of the wellbore in real time, judge the well leakage situation, adjust the mud density, avoid serious economic losses caused by well leakage, and observe the liquid level changes in time to prevent the occurrence of well gushing and overflow, thereby reducing the safety risk of well control; the mud injection function is added, and mud can be injected into the well killing vehicle through the mud injection manifold to realize the transfer and utilization of mud; the throttle valve in the throttle manifold is provided with a partition valve upstream and downstream, which solves the problem that the throttle valve in the prior art cannot be repaired online; a chip installation slot is provided for installing an information tracking chip, which provides strong support for the informatization construction of well control equipment; three blowout manifolds are provided, and during ultra-high pressure blowout, the three blowout manifolds operate simultaneously, and the blowout speed is three times the original, which greatly reduces the safety risk of well control. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model will be further described below in conjunction with the accompanying drawings.

[0019] Figure 1 It is a top view of the high-pressure all-purpose well-killing choke manifold system of the utility model;

[0020] Figure 2 for Figure 1 Cross-sectional view along the AA direction.

[0021] Description of the accompanying symbols: 1. First union flange; 2. First check valve; 3. First three-way valve; 4. First gate valve; 5. Second gate valve; 6. Second three-way valve; 7. Second check valve; 8. Second union flange; 9. First flange short-circuit; 10. Throttle valve; 11. Third gate valve; 12. Erosion-resistant short-circuit; 13. Third three-way valve; 14. Blind flange; 15. Fourth gate valve; 16. Second flange short-circuit; 17. Double-sided method flange; 18, six-way; 19, Y-shaped three-way; 20, the fifth gate valve; 21, four-way; 22, the first discharge pipe line; 23, the second discharge pipe line; 24, the sixth gate valve; 25, the third discharge pipe line; 26, the seventh gate valve; 27, the joint flange; 28, the sensor; 29, the eighth gate valve; 30, the needle valve; 31, the instrument flange; 32, the pressure gauge; 33, the liquid-gas separation outlet pipeline; 34, the chip installation slot. DETAILED DESCRIPTION

[0022] like Figure 1-2 As shown, a high-pressure all-purpose well-killing throttling manifold system includes an upper structure and a lower structure. The upper structure includes a throttling manifold and a pressure monitoring device, and the lower structure includes a well-killing manifold, a blowout manifold, a liquid level monitoring manifold and a mud injection manifold. A liquid-gas separation liquid inlet pipeline interface is provided at the outlet of the lower structure, and a chip mounting slot 34 for installing an information tracking chip is also provided on the lower structure, providing strong support for the informatization construction of well control equipment.

[0023] The number of the well-killing manifolds is set to two, and the two well-killing manifolds are arranged symmetrically on the left and right; the well-killing manifold on the right includes a first union flange 1, a first check valve 2, a first tee 3 and a first gate valve 4 connected in sequence from right to left, and the well-killing manifold on the left includes a second union flange 8, a second check valve 7, a second tee 6 and a second gate valve 5 connected in sequence from left to right, and the first gate valve 4 and the second gate valve 5 are connected to the blowdown manifold.

[0024] The blowdown manifold includes a conventional blowdown manifold and two spare blowdown manifolds, wherein the conventional blowdown manifold is arranged in the middle, and the two spare blowdown manifolds are arranged on the left and right sides of the conventional blowdown manifold; three blowdown manifolds are arranged, and during ultra-high pressure blowdown, the three blowdown manifolds operate simultaneously, and the blowdown speed is three times the original speed, which greatly reduces the safety risk of well control.

[0025] The conventional blowdown manifold includes a six-way pipe 18, a double-sided flange 17 is connected to the front interface of the six-way pipe 18, the left interface of the six-way pipe 18 is connected to the second gate valve 5, the right interface of the six-way pipe 18 is connected to the first gate valve 4, the rear interface of the six-way pipe 18 is connected to the first interface of the Y-shaped tee 19, the second interface of the Y-shaped tee 19 is connected to the front end of the fifth gate valve 20, the rear end of the fifth gate valve 20 is connected to the front interface of the four-way pipe 21, and the rear interface of the four-way pipe 21 is connected to the first blowdown pipeline 22.

[0026] The spare blowdown manifold on the left side includes the double-sided flange 17, the six-way 18, the second gate valve 5, the second tee 6 and the second blowdown pipeline 23 connected to the rear interface of the second tee 6; the spare blowdown manifold on the right side includes the double-sided flange 17, the six-way 18, the first gate valve 4, the first tee 3, the sixth gate valve 24 connected to the rear interface of the first tee 3, and the third blowdown pipeline 25 connected to the rear side of the sixth gate valve 24.

[0027] The liquid level monitoring manifold includes the double-sided flange 17, the six-way 18, the Y-shaped tee 19, the seventh gate valve 26 connected to the third interface of the Y-shaped tee 19, the joint flange 27 connected to the other end of the seventh gate valve 26, and the sensor 28 connected to the other side of the joint flange 27; by setting up the liquid level monitoring manifold, the liquid level monitoring function is added, the wellbore liquid level can be monitored in real time, the well leakage situation can be judged, the mud density can be adjusted, and serious economic losses caused by well leakage can be avoided. The liquid level changes can be observed in time to prevent the occurrence of well gushing and overflow, and reduce the safety risks of well control.

[0028] The mud injection manifold includes the first union flange 1, the first check valve 2, the first tee 3, the sixth gate valve 24 and the third blowdown line 25 connected together; by setting up the mud injection manifold, the mud injection function is increased, and mud can be injected into the well killing vehicle through the mud injection manifold to realize mud transfer and utilization.

[0029] The throttling manifold includes a first flange short-circuit 9, the lower end of which is connected to the upper interface of the six-way 18, the upper end of which is connected to a third gate valve 11, the upper part of which is connected to a throttling valve 10, the rear side of which is connected to an erosion-resistant short-circuit 12, the rear end of which is connected to a first interface of a third three-way 13, the second interface of which is connected to a blind flange 14, the third interface of which is connected to a fourth gate valve 15, the lower end of which is connected to a second flange short-circuit 16, the other end of which is connected to the upper interface of the four-way 21; a blocking valve is arranged upstream and downstream of the throttling valve in the throttling manifold, so as to solve the problem that the throttling valve cannot be repaired online in the prior art.

[0030] The pressure monitoring device includes an eighth gate valve 29, the lower end of the eighth gate valve 29 is connected to the upper interface of the six-way 18, the upper end of the eighth gate valve 29 is connected to an instrument flange 31, the front side of the instrument flange 31 is connected to a needle valve 30, and pressure gauges 32 are provided above the instrument flange 31 and above the needle valve 30.

[0031] The liquid-gas separation liquid inlet pipeline interface includes a liquid-gas separation outlet pipeline 33 , and the liquid-gas separation outlet pipeline 33 is connected to the right interface of the cross-connection 21 .

[0032] The system working pressure level of the utility model is 34.5MPa and above.

[0033] During construction, the high-pressure all-purpose well-killing throttling manifold system described in the utility model is installed on the left side of the drilling rig and is connected to the wellbore through a double-sided flange, an internal control pipeline, and a drilling spool. The well-killing manifold is connected to the well-killing pump group through the first union flange 1 and the second union flange 8. The liquid-gas separation outlet pipeline 33 is connected to the liquid-gas separator device. During the well-killing operation, the first gate valve 4 or the second gate valve 5 is opened, and heavy mud is injected into the wellbore through the well-killing manifold to perform the well-killing operation; during the throttling operation, the third gate valve 11 and the fourth gate valve 15 are opened, and the throttling operation is performed by adjusting the opening of the throttling valve 10. When encountering harmful gases, the medium is transported to the liquid-gas separator through the liquid-gas separation outlet pipeline 33 for gas-liquid separation and harmless treatment; after debugging the sensor 28, the seventh gate valve 26 is opened to monitor the wellbore liquid level in real time; when the wellbore pressure is too high and it is necessary to release the pressure by blowing, the first gate valve 4 can be opened to carry out the blowing operation. If necessary, the second gate valve 5, the first gate valve 4, and the sixth gate valve 24 can be opened to release the pressure in three channels at the same time to increase the speed of the blowing operation. When the well-killing truck is short of mud, the sixth gate valve 24 can be opened to pump mud into the well-killing truck through the mud injection manifold; the chip with the identification code is installed in the chip installation slot 34 to permanently store system information.

[0034] The utility model has a compact structure and complete functions, meeting various well control operation requirements; it adopts advanced well control equipment technology, greatly reducing the safety risks of well control operations; it has a more reasonable structural design and is easy to maintain, avoiding personal injury accidents caused by toxic and harmful substances in drilling; and the information management of the equipment is more scientific.

[0035] The embodiments described above are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. A high-pressure all-purpose well-killing choke manifold system, characterized in that: The invention comprises an upper structure and a lower structure, wherein the upper structure comprises a throttling manifold and a pressure monitoring device, and the lower structure comprises a well killing manifold, a blowdown manifold, a liquid level monitoring manifold and a mud injection manifold. A liquid-gas separation liquid inlet pipeline interface is arranged at the outlet of the lower structure, and a chip mounting slot (34) for mounting an information tracking chip is also arranged on the lower structure.

2. The high-pressure all-purpose well-killing choke manifold system according to claim 1 is characterized in that: The number of the well-killing manifolds is set to two, and the two well-killing manifolds are arranged symmetrically on the left and right. The well-killing manifold on the right side includes a first union flange (1), a first check valve (2), a first three-way valve (3) and a first gate valve (4) connected in sequence from right to left, and the well-killing manifold on the left side includes a second union flange (8), a second check valve (7), a second three-way valve (6) and a second gate valve (5) connected in sequence from left to right. The first gate valve (4) and the second gate valve (5) are connected to the blowdown manifold.

3. The high-pressure all-purpose well-killing choke manifold system according to claim 2 is characterized in that: The nozzle manifold comprises a conventional nozzle manifold and two spare nozzle manifolds, wherein the conventional nozzle manifold is arranged in the middle, and the two spare nozzle manifolds are arranged on the left and right sides of the conventional nozzle manifold.

4. The high-pressure all-purpose well-killing choke manifold system according to claim 3 is characterized in that: The conventional blowdown manifold comprises a six-way (18), a double-sided flange (17) is connected to the front interface of the six-way (18), the left interface of the six-way (18) is connected to the second gate valve (5), the right interface of the six-way (18) is connected to the first gate valve (4), the rear interface of the six-way (18) is connected to the first interface of a Y-shaped tee (19), the second interface of the Y-shaped tee (19) is connected to the front end of a fifth gate valve (20), the rear end of the fifth gate valve (20) is connected to the front interface of a four-way (21), and the rear interface of the four-way (21) is connected to the first blowdown pipeline (22).

5. The high-pressure all-purpose well-killing choke manifold system according to claim 4 is characterized in that: The spare blowdown manifold on the left side includes the double-sided flange (17), the six-way (18), the second gate valve (5), the second tee (6) and the second blowdown pipeline (23) connected to the rear interface of the second tee (6); the spare blowdown manifold on the right side includes the double-sided flange (17), the six-way (18), the first gate valve (4), the first tee (3), the sixth gate valve (24) connected to the rear interface of the first tee (3), and the third blowdown pipeline (25) connected to the rear side of the sixth gate valve (24).

6. The high-pressure all-purpose well-killing choke manifold system according to claim 4 is characterized in that: The liquid level monitoring manifold comprises the double-sided flange (17), the six-way (18), the Y-shaped tee (19) connected together, a seventh gate valve (26) connected to the third interface of the Y-shaped tee (19), a joint flange (27) connected to the other end of the seventh gate valve (26), and a sensor (28) connected to the other side of the joint flange (27).

7. The high-pressure all-purpose well-killing choke manifold system according to claim 5 is characterized in that: The mud injection manifold comprises the first union flange (1), the first check valve (2), the first three-way valve (3), the sixth gate valve (24) and the third blowdown pipeline (25) which are connected together.

8. The high-pressure all-purpose well-killing choke manifold system according to claim 4 is characterized in that: The throttling manifold comprises a first flange short-circuit (9), the lower end of the first flange short-circuit (9) is connected to the upper interface of the six-way (18), the upper end of the first flange short-circuit (9) is connected to a third gate valve (11), the upper part of the third gate valve (11) is connected to a throttling valve (10), the rear side of the throttling valve (10) is connected to an erosion-resistant short-circuit (12), the rear end of the erosion-resistant short-circuit (12) is connected to the first interface of a third three-way (13), the second interface of the third three-way (13) is connected to a blind flange (14), the third interface of the third three-way (13) is connected to a fourth gate valve (15), the lower end of the fourth gate valve (15) is connected to a second flange short-circuit (16), and the other end of the second flange short-circuit (16) is connected to the upper interface of the four-way (21).

9. The high-pressure all-purpose well-killing choke manifold system according to claim 4 is characterized in that: The pressure monitoring device comprises an eighth gate valve (29), the lower end of the eighth gate valve (29) is connected to the upper interface of the six-way valve (18), the upper end of the eighth gate valve (29) is connected to an instrument flange (31), the front side of the instrument flange (31) is connected to a needle valve (30), and pressure gauges (32) are arranged above the instrument flange (31) and above the needle valve (30).

10. The high-pressure all-purpose well-killing choke manifold system according to claim 4, characterized in that: The liquid-gas separation liquid inlet pipeline interface comprises a liquid-gas separation outlet pipeline (33), and the liquid-gas separation outlet pipeline (33) is connected to the right side interface of the cross-connection (21).

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