Throttling pressure control manifold device

Abstract

The utility model relates to a throttling pressure control manifold device, and relates to the technical field of drilling well control. The throttling pressure control manifold device comprises a throttling manifold, a pressure control manifold, a first connecting valve, a second connecting valve and a third connecting valve. The throttling manifold and the pressure control manifold are arranged at intervals in the first direction. And the throttle manifold is communicated with the pressure control manifold at the first connecting valve, the second connecting valve and the third connecting valve. The throttle manifold comprises a main throttle pipeline. The pressure control manifold comprises a main pressure control pipeline. Wherein the first connecting valve is connected with an inlet of the main throttling pipeline, and the first connecting valve is connected with an inlet of the main pressure control pipeline. The second connecting valve is connected with an outlet of the throttling manifold and connected with an inlet of the pressure control manifold. And the third connecting valve is connected with an outlet of the main throttling pipeline and an outlet of the pressure control manifold. According to the throttling pressure control manifold device, the throttling manifold and the pressure control manifold can work cooperatively to achieve two times of pressure control.

Description

Technical Field

[0001] The utility model relates to the technical field of drilling well control, in particular to a throttling pressure control manifold device. Background Art

[0002] Currently, according to relevant well control management regulations and well control technical standards, conventional drilling operations must be equipped with a choke manifold. The choke manifold can implement throttling circulation during well killing, control the outflow of wellbore fluid, control wellhead back pressure, maintain a constant balance between bottomhole pressure and formation pressure, and prevent overflow. At the same time, the opening and closing of the throttle valve can be used to control a certain casing pressure to prevent further intrusion of formation fluid into the well or formation leakage caused by gas invasion of wellbore fluid.

[0003] Many oil fields in my country generally use conventional drilling technology in production drilling. However, many oil and gas wells located in areas with relatively complex geological conditions still have the problem of too narrow drilling fluid safety density window, which leads to some serious downhole problems such as kicks and pressure differential sticking during drilling. In order to solve the problem of safe and smooth drilling operations in complex formations with narrow density windows and reduce the occurrence of complex drilling problems such as kicks, leakage and pressure differential sticking during drilling, the current oil and gas drilling engineering field adopts an emerging fine pressure controlled drilling technology in drilling technology. Its main application principle is to keep the bottom hole pressure constant during drilling, so that drilling operations can be carried out safely and smoothly in complex formations with narrow density windows and reduce the occurrence of complex drilling problems such as kicks, leakage and pressure differential sticking during drilling. The application benefits are significant.

[0004] However, in order to achieve fine pressure controlled drilling, the throttle manifold and the fine pressure controlled manifold need to be simply connected in series in the plane through conversion flanges, flange straight pipes, etc. during the drilling process. This occupies a large area and is inconvenient for on-site layout. In addition, the throttle manifold and the fine pressure controlled manifold can only control pressure separately. Utility Model Content

[0005] The utility model provides a throttling and pressure-controlling manifold device, which can not only reduce the floor space so that the throttling manifold and the pressure-controlling manifold can control the pressure separately, but also can realize the coordinated work of the throttling manifold and the pressure-controlling manifold to realize double pressure control, so that the throttling manifold and the pressure-controlling manifold can work in a coordinated and integrated manner, thereby making the throttling and pressure-controlling manifold device better adapt to the needs of complex working conditions, realizing a more precise pressure control function, and improving the working performance of the throttling and pressure-controlling manifold device.

[0006] According to the throttling pressure control manifold device of the embodiment of the present application, it includes a throttling manifold, a pressure control manifold, a first connecting valve, a second connecting valve and a third connecting valve. The throttling manifold and the pressure control manifold are arranged at intervals along the first direction, and the throttling manifold and the pressure control manifold are connected at the first connecting valve, the second connecting valve and the third connecting valve. The throttling manifold includes a main throttling pipe, and the pressure control manifold includes a main pressure control pipe, wherein the first connecting valve is connected to the inlet of the main throttling pipe, and the first connecting valve is connected to the inlet of the main pressure control pipe; the second connecting valve is connected to the outlet of the throttling manifold, and the second connecting valve is connected to the inlet of the pressure control manifold; the third connecting valve is connected to the outlet of the main throttling pipe, and the third connecting valve is connected to the outlet of the pressure control manifold.

[0007] According to the throttling pressure control manifold device of the above-mentioned embodiment of the present application, the main throttling pipeline includes a first main throttling flat valve, a main throttling valve and a second main throttling flat valve. The first main throttling flat valve, the main throttling valve and the second main throttling flat valve are connected in sequence from the main throttling pipeline inlet to the main throttling pipeline outlet, and the second connecting valve is connected between the main throttling valve and the second main throttling flat valve.

[0008] According to the throttling pressure control manifold device of any of the above embodiments of the present application, the main pressure control pipeline includes a main pressure control valve, which is arranged between the inlet and the outlet of the main pressure control pipeline.

[0009] According to the throttling pressure control manifold device of any of the above embodiments of the present application, the throttling manifold also includes a blowout pipe, which is connected in parallel with the main throttling pipe. The blowout pipe includes a first blowout prevention flat valve, which is arranged between the inlet and the outlet of the blowout pipe.

[0010] According to the throttling pressure control manifold device of any of the above embodiments of the present application, the throttling manifold also includes a spare throttling pipe, which is connected in parallel with the main throttling pipe. The spare throttling pipe includes a first spare throttling flat valve and a spare throttling valve. The first spare throttling flat valve and the spare throttling valve are connected in sequence by pipelines through the inlet of the spare throttling pipe and the outlet of the spare throttling pipe.

[0011] According to the throttling pressure control manifold device of any of the above embodiments of the present application, the main throttling pipeline also includes a third main throttling flat valve, which is arranged between the second main throttling flat valve and the outlet of the main throttling pipeline; the blowout pipeline also includes a second blowout preventer flat valve, which is arranged between the first blowout preventer flat valve and the outlet of the blowout pipeline; the spare throttling pipeline also includes a second spare throttling flat valve and a third spare throttling flat valve, which are arranged in sequence between the spare throttling valve and the outlet of the spare throttling pipeline, and the outlet of the spare throttling pipeline is used to connect an oil-gas separator, wherein the connection between the second main throttling flat valve and the third main throttling flat valve, the connection between the first blowout preventer flat valve and the second blowout preventer flat valve, and the connection between the second spare throttling flat valve and the third spare throttling flat valve are connected in sequence by pipelines, and the third connecting valve is connected between the first blowout preventer flat valve and the second blowout preventer flat valve.

[0012] According to the throttling pressure control manifold device of any of the above embodiments of the present application, the pressure control manifold also includes a bypass pipe, which is arranged in parallel with the main pressure control pipe. The bypass pipe includes a bypass flat valve, which is arranged between the inlet of the bypass pipe and the outlet of the bypass pipe. The first connecting valve is connected to the inlet of the bypass pipe, and the connection between the inlet of the bypass pipe and the bypass flat valve is connected to the second connecting valve through a pipeline. The third connecting valve is connected to the outlet of the bypass pipe. The main pressure control pipe also includes a second main pressure control flat valve, which is arranged between the main pressure control valve and the outlet of the main pressure control pipe. The outlet of the main pressure control pipe is connected to the outlet pipeline of the bypass pipe and indirectly connected to the third connecting valve.

[0013] According to the throttling pressure control manifold device of any of the above embodiments of the present application, the pressure control manifold also includes a spare pressure control pipeline, which is connected in parallel with the main pressure control pipeline and the bypass pipeline respectively. The spare pressure control pipeline includes a first spare pressure control flat valve, a spare pressure control valve and a second spare pressure control flat valve. The first spare pressure control flat valve, the spare pressure control valve and the second spare pressure control flat valve are connected in sequence from the inlet of the spare pressure control pipeline to the outlet of the spare pressure control pipeline. The first connecting valve is connected to the inlet of the spare pressure control pipeline, and the outlet of the spare pressure control pipeline is connected to the outlet pipeline of the bypass pipeline and is indirectly connected to the third connecting valve.

[0014] According to the throttling pressure control manifold device of any of the above embodiments of the present application, the pressure control manifold also includes a detection pipeline, the detection pipeline includes a detection flat valve and a mass flow meter, the detection flat valve and the mass flow meter are connected in sequence from the inlet of the detection pipeline to the outlet of the detection pipeline, the inlet of the detection pipeline is connected to the outlet of the spare pressure control pipeline, the throttling pressure control manifold device also includes a fourth connecting valve, the fourth connecting valve is connected to the outlet of the detection pipeline, and the fourth connecting valve is connected to the connection between the second spare throttling flat valve and the third spare throttling flat valve.

[0015] According to any of the above embodiments of the present application, the throttling and pressure-control manifold device further includes a base and a lifting assembly. The base is connected to the lifting assembly. The base includes a mounting surface, and the throttling and pressure-control manifold device is installed on the mounting surface.

[0016] According to the throttling pressure control manifold device of the embodiment of the present application, the throttling manifold and the pressure control manifold are arranged in sequence along the first direction to reduce the floor space, and the throttling manifold and the pressure control manifold are connected through the first connecting valve, the second connecting valve and the third connecting valve. When the first connecting valve, the second connecting valve and the third connecting valve are closed at the same time, the drilling fluid can only enter through the inlet of the main throttling pipeline and flow out from the outlet of the main throttling pipeline, realizing the separate throttling pressure control of the main throttling pipeline of the throttling manifold. When the second connecting valve is closed and the first pressure control valve and the third pressure control valve are opened at the same time, the drilling fluid can pass through the first connecting valve and enter from the inlet of the main pressure control pipeline, and flow out from the outlet of the main throttling pipeline through the third connecting valve from the outlet of the main pressure control pipeline, realizing the separate throttling pressure control of the main pressure control pipeline of the pressure control manifold. When the first connecting valve is closed and the second connecting valve and the third connecting valve are opened at the same time, the drilling fluid can enter from the inlet of the main throttling pipe, and flow from the outlet of the main throttling pipe through the second connecting valve into the inlet of the main pressure control pipe, and then flow out from the outlet of the main pressure control pipe through the third connecting valve, thus realizing double pressure control of the main throttling pipe and the main pressure control pipe. The throttling and pressure control manifold device can not only reduce the floor space so that the throttling manifold and the pressure control manifold can control the pressure separately, but also realize the coordinated work of the throttling manifold and the pressure control manifold to realize double pressure control, so that the throttling manifold and the pressure control manifold can work in a coordinated and integrated manner, thereby making the throttling and pressure control manifold device better adapt to the needs of complex working conditions, realizing more precise pressure control function, and improving the working performance of the throttling and pressure control manifold device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be described in more detail below based on embodiments with reference to the accompanying drawings.

[0018] Figure 1 This is a structural diagram of a throttling manifold in one embodiment of the present utility model;

[0019] Figure 2 It is a structural diagram of a pressure-controlled manifold in one embodiment of the present invention.

[0020] Reference numerals:

[0021] 1000-Throttling and pressure control manifold device;

[0022] 100 - throttle manifold; 110 - main throttle pipe; 111 - first main throttle flat valve; J1 - main throttle valve; 112 - second main throttle flat valve; 113 - third main throttle flat valve; 120 - blowout pipe; 121 - first blowout preventer flat valve; 122 - second blowout preventer flat valve; 130 - spare throttle pipe; 131 - first spare throttle flat valve; J2 - spare throttle valve; 132 - second spare throttle flat valve; 133 - third spare throttle flat valve;

[0023] 200 - pressure control manifold; 210 - main pressure control pipeline; K1 - main pressure control valve; 211 - first main pressure control flat plate valve; 212 - second main pressure control flat plate valve; 220 - bypass pipeline; 221 - bypass flat valve; 230 - spare pressure control pipeline; 231 - first spare pressure control flat valve; K2 - spare pressure control valve; 232 - second spare pressure control flat valve; 240 - detection pipeline; 241 - detection flat valve; 242 - mass flow meter;

[0024] L1-first connecting valve; L2-second connecting valve; L3-third connecting valve; L4-fourth connecting valve. DETAILED DESCRIPTION

[0025] The present invention will be further described below with reference to the accompanying drawings.

[0026] The utility model provides a throttling and pressure-controlling manifold device, which can not only enable the throttling manifold and the pressure-controlling manifold to control the pressure independently, but also enable the throttling manifold and the pressure-controlling manifold to work together to achieve double pressure control, so that the throttling manifold and the pressure-controlling manifold can work in a coordinated and integrated manner, thereby enabling the throttling and pressure-controlling manifold device to better adapt to the needs of complex working conditions, achieve a more accurate pressure control function, and improve the working performance of the throttling and pressure-controlling manifold device.

[0027] Figure 1 This is a structural diagram of a throttling manifold in one embodiment of the present utility model; Figure 2 This is a schematic diagram of the structure of the pressure control manifold in one embodiment of the present invention. Figure 1-2As shown, the throttling pressure control manifold device 1000 provided in an embodiment of the present application includes a throttling manifold 100, a pressure control manifold 200, a first connecting valve L1, a second connecting valve L2, and a third connecting valve L3. The throttling manifold 100 and the pressure control manifold 200 are arranged at intervals along the first direction. The throttling manifold 100 and the pressure control manifold 200 are connected at the first connecting valve L1, the second connecting valve L2, and the third connecting valve L3. The throttling manifold 100 includes a main throttling pipe 110. The pressure control manifold 200 includes a main pressure control pipe 210. Among them, the first connecting valve L1 is connected to the inlet of the main throttling pipe 110, and the first connecting valve L1 is connected to the inlet of the main pressure control pipe 210. The second connecting valve L2 is connected to the outlet of the throttling manifold 100, and the second connecting valve L2 is connected to the inlet of the pressure control manifold 200. The third connecting valve L3 is connected to the outlet of the main throttling pipe 110 , and the third connecting valve L3 is connected to the outlet of the pressure control manifold 200 .

[0028] It should be noted that the inlet of the main throttle pipe 110 is connected to the wellhead, allowing drilling fluid to flow through the wellhead into the inlet of the main throttle pipe 110. At the same time, under normal operating conditions, the valves in the throttle manifold 100 and the pressure control manifold 200 are all closed and are only opened when in use.

[0029] According to the throttle and pressure-control manifold device 1000 of the embodiment of the present application, the throttle manifold 100 and the pressure-control manifold 200 are arranged in a first direction and spaced apart from each other, thereby reducing the footprint. The throttle manifold 100 and the pressure-control manifold 200 are connected via the first connecting valve L1, the second connecting valve L2, and the third connecting valve L3. When the first connecting valve L1, the second connecting valve L2, and the third connecting valve L3 are closed, drilling fluid can only enter through the inlet of the main throttle pipe 110 and flow out of the outlet of the main throttle pipe 110, thereby achieving independent throttling and pressure control of the main throttle pipe 110 of the throttle manifold 100. When the second connecting valve L2 is closed and the first and third pressure control valves are simultaneously open, drilling fluid can enter the inlet of the main pressure control pipeline 210 through the first connecting valve L1, flow out of the outlet of the main pressure control pipeline 210 through the third connecting valve L3, and out of the outlet of the main throttle pipeline 110, thereby achieving independent throttling pressure control of the main pressure control pipeline 210 of the pressure control manifold 200. When the first connecting valve L1 is closed and the second and third connecting valves L2 and L3 are simultaneously open, drilling fluid can enter the inlet of the main throttle pipeline 110, flow out of the outlet of the main throttle pipeline 110 through the second connecting valve L2, and then flow out of the outlet of the main throttle pipeline 110 through the third connecting valve L3, thereby achieving double pressure control: throttling pressure control of the main throttle pipeline 110 and throttling pressure control of the main pressure control pipeline 210. The throttling and pressure-control manifold device 1000 can not only reduce the floor space so that the throttling manifold 100 and the pressure-control manifold 200 can control the pressure independently, but also can realize the coordinated work of the throttling manifold 100 and the pressure-control manifold 200 to realize double pressure control, so that the throttling manifold 100 and the pressure-control manifold 200 can work in a coordinated and integrated manner, thereby making the throttling and pressure-control manifold device 1000 better adapt to the needs of complex working conditions, realizing a more precise pressure control function, and improving the working performance of the throttling and pressure-control manifold device 1000.

[0030] like Figure 1 As shown, in some embodiments, the main throttle pipe 110 includes a first main throttle plate valve 111, a main throttle valve J1, and a second main throttle plate valve 112. The first main throttle plate valve 111, the main throttle valve J1, and the second main throttle plate valve 112 are sequentially connected by pipelines from the inlet of the main throttle pipe 110 to the outlet of the main throttle pipe 110. The second connecting valve L2 is connected between the main throttle valve J1 and the second main throttle plate valve 112.

[0031] In this embodiment, when the first connecting valve L1, the second connecting valve L2 and the third connecting valve L3 are in the closed state, the first main throttling flat valve 111, the main throttling valve J1 and the second main throttling flat valve 112 in the main throttling pipe 110 are opened at the same time, so that the drilling fluid flows from the inlet of the main throttling pipe 110 through the first main throttling flat valve 111, the main throttling valve J1 and the second main throttling flat valve 112 in sequence and flows out from the outlet of the main throttling pipe 110, thereby realizing separate throttling and pressure control of the drilling fluid.

[0032] When the second connecting valve L2 is in a closed state and the first connecting valve L1 and the third connecting valve L3 are in an open state at the same time, if the first main throttling flat valve 111, the main throttling valve J1 and the second main throttling flat valve 112 are all in a closed state, the drilling fluid cannot be throttled and pressure-controlled through the main throttling pipe 110, and can only enter the inlet of the main pressure control pipe 210 through the first connecting valve L1 connected to the inlet of the main throttling pipe 110, and flow out through the outlet of the main throttling manifold 100 through the third connecting valve L3 connected to the outlet of the main pressure control pipe 210, thereby realizing the independent pressure control of the drilling fluid by the main pressure control pipe 210.

[0033] When the second connecting valve L2 and the third connecting valve L3 are in the open state at the same time, and the first connecting valve L1 is in the closed state, the first main throttling flat valve 111 and the main throttling valve J1 in the main throttling pipe 110 are in the open state, and the second main throttling valve J1 is in the closed state. The drilling fluid passes through the inlet of the main throttling pipe 110, flows through the first main throttling flat valve 111, the main throttling valve J1, and the second connecting valve L2 in sequence, and enters the inlet of the main pressure control pipe 210 through the second connecting valve L2, and then flows out from the outlet of the main pressure control pipe 210 through the third connecting valve L3, thereby realizing throttling pressure control of the main throttling pipe 110 and re-pressure control of the main pressure control pipe 210.

[0034] like Figure 2 As shown, in some embodiments, the main pressure control pipeline 210 includes a main pressure control valve K1 , which is disposed between an inlet of the main pressure control pipeline 210 and an outlet of the main pressure control pipeline 210 .

[0035] In this embodiment, when the drilling fluid flows from the inlet of the main pressure control pipe 210 through the main pressure control valve K1 , the main pressure control valve K1 controls the pressure of the drilling fluid and the fluid flows out from the outlet of the main pressure control pipe 210 .

[0036] like Figure 1 As shown, in some embodiments, the throttling manifold 100 also includes a blowout pipe 120, which is connected in parallel with the main throttling pipe 110, and the blowout pipe 120 includes a first blowout pipe 120 flat valve, which is arranged between the inlet of the blowout pipe 120 and the outlet of the blowout pipe 120.

[0037] It should be noted that under normal circumstances, the blowout pipe 120 is in a closed state. Only when formation fluid invades the wellbore during drilling, causing the pressure in the well to rise rapidly, forming a well kick or blowout, in order to promptly release the excessive pressure in the well and prevent the situation from further deteriorating, the blowout pipe 120 of the throttle manifold 100 can be opened to release the pressure.

[0038] In this embodiment, when drilling fluid generates a kick or blowout, the flat valve of the first blowout pipe 120 is opened to allow the drilling fluid to flow out through the outlet of the blowout pipe 120, thereby promptly releasing the drilling fluid to reduce wellhead pressure or divert hazardous fluids. On the other hand, if the main throttle pipe 110 fails to operate normally due to a malfunction, such as a damaged valve or pipe blockage, it is necessary to quickly switch to the blowout pipe 120 and open the first blowout pipe 120 flat valve of the blowout pipe 120 to ensure the continuity of drilling operations. Alternatively, when the main throttle pipe 110 undergoes regular maintenance or overhaul, the first blowout pipe 120 flat valve of the blowout pipe 120 may be temporarily opened to avoid disrupting normal production, and the blowout pipe 120 may be used for fluid control and pressure regulation.

[0039] like Figure 1 As shown, in some embodiments, the throttle manifold 100 further includes a backup throttle pipe 130. The backup throttle pipe 130 is connected in parallel with the main throttle pipe 110. The backup throttle pipe 130 includes a first backup throttle plate valve 131 and a backup throttle valve J2. The first backup throttle plate valve 131 and the backup throttle valve J2 are sequentially connected by pipelines at the inlet and outlet of the backup throttle pipe 130.

[0040] It should be noted that the standby throttling pipe 130 can only perform throttling and pressure control when the throttling manifold 100 works alone, and cannot perform two pressure control operations simultaneously with the pressure control manifold 200 .

[0041] In this embodiment, if the main throttling pipe 110 cannot operate normally due to a fault, such as valve damage, pipe blockage, etc., or when the main throttling pipe 110 is undergoing regular maintenance or overhaul, the first spare throttling flat valve 131 and the spare throttling valve J2 of the spare throttling pipe 130 can be opened. The spare throttling pipe 130 can be used to perform separate throttling pressure control to ensure the continuity and safety of drilling operations.

[0042] like Figure 1As shown, in some embodiments, the main throttle pipe 110 further includes a third main throttle plate valve 113, which is disposed between the second main throttle plate valve 112 and the outlet of the main throttle pipe 110. The blowout pipe 120 further includes a second blowout preventer plate valve 122, which is disposed between the first blowout pipe 120 plate valve and the outlet of the blowout pipe 120. The backup throttle pipe 130 further includes a second backup throttle plate valve 132 and a third backup throttle plate valve 133, which are disposed sequentially between the backup throttle valve J2 and the outlet of the backup throttle pipe 130. The outlet of the backup throttle pipe 130 is connected to an oil-gas separator. Among them, the connection between the second main throttling flat valve 112 and the third main throttling flat valve 113, the connection between the first blowout pipe 120 flat valve and the second blowout pipe 120 flat valve, and the connection between the second standby throttling flat valve 132 and the third standby throttling flat valve 133 are connected in sequence by pipelines, and the third connecting valve L3 is connected between the first blowout preventer flat valve 121 and the second blowout preventer flat valve 122.

[0043] It should be noted that, in this embodiment, the outlet of the backup throttling pipe 130 is used to connect to the oil-gas separator. In some other optional embodiments, the outlet of the main throttling pipe 110 may also be used to connect to the oil-gas separator.

[0044] In this embodiment, when the drilling fluid is individually throttled and pressure-controlled through the main throttle pipe 110 or the spare throttle pipe 130 of the throttle manifold 100 and oil-gas separation is required, the drilling fluid can be allowed to pass through the third spare flat valve of the spare throttle pipe 130 to open, so that the drilling fluid enters the oil-gas separator connected to the outlet of the spare throttle pipe 130 for oil-gas separation, removes the gas mixed in the drilling fluid, restores the density and performance of the drilling fluid, and allows the drilling fluid to be recycled and reused, thereby reducing material waste and cost expenditure and ensuring the safety and smooth progress of the drilling operation.

[0045] For example, when the drilling fluid is individually pressure-controlled through the main throttle pipe 110 of the throttle manifold 100 and the drilling fluid needs to be separated from oil and gas, the drilling fluid can be passed from the inlet of the main throttle pipe 110 through the first main throttle flat valve 111, the main throttle valve J1, the second main throttle flat valve 112, the third spare throttle flat valve 133, and from the outlet of the spare throttle pipe 130 into the oil-gas separator for oil-gas separation.

[0046] Similarly, when the main throttling pipe 110 of the throttling manifold 100 needs to be pressure controlled and then the main pressure control pipe 210 of the pressure control manifold 200 needs to be pressure controlled, the drilling fluid can also flow out through the outlet of the main throttling pipe 110 or flow through the outlet of the spare throttling pipe 130 to the oil-gas separator for oil and gas separation.

[0047] like Figure 2 As shown, in some embodiments, the pressure control manifold 200 further includes a bypass pipe 220. The bypass pipe 220 is arranged in parallel with the main pressure control pipe 210. The bypass pipe 220 includes a bypass plate valve 221, which is arranged between the inlet and outlet of the bypass pipe 220. The first connecting valve L1 is connected to the inlet of the bypass pipe. The connection between the inlet of the bypass pipe 220 and the bypass plate valve 221 is connected to the second connecting valve L2 through a pipeline. The third connecting valve L3 is connected to the outlet of the bypass pipe 220.

[0048] The main control pressure pipeline 210 also includes a first main control pressure plate valve 211 and a second main control pressure plate valve 212. The first main control pressure plate valve 211 is arranged between the inlet of the main control pressure pipeline 210 and the main control pressure valve K1, and the second main control pressure plate valve 212 is arranged between the main control pressure valve K1 and the outlet of the main control pressure pipeline 210. The outlet of the main control pressure pipeline 210 is connected to the outlet pipeline of the bypass pipeline 220 and is indirectly connected to the third connecting valve L3.

[0049] In this embodiment, when the main pressure control pipeline 210 of the pressure control manifold 200 fails, the bypass flat valve 221 can be opened to allow the drilling fluid to flow through the throttling manifold 100 via the first connecting valve L1, the bypass flat valve 221, and the third connecting valve L3 to the outlet of the main throttling pipeline 110 or the outlet of the backup throttling pipeline 130 of the throttling manifold 100. If it is necessary to flow out from the outlet of the main throttling pipeline 110, the third main throttling flat valve 113 of the backup pipeline is opened. If it is necessary to flow out from the outlet of the backup throttling pipeline 130, the third backup throttling flat valve 133 of the backup throttling pipeline 130 is opened.

[0050] like Figure 2 As shown, in some embodiments, the pressure control manifold 200 further includes a backup pressure control pipeline 230. The backup pressure control pipeline 230 is connected in parallel with the main pressure control pipeline 210 and the bypass pipeline 220. The backup pressure control pipeline 230 includes a first backup pressure control plate valve 231, a backup pressure control valve K2, and a second backup pressure control plate valve 232. The first backup pressure control plate valve 231, the backup pressure control valve K2, and the second backup pressure control plate valve 232 are sequentially connected by pipelines from the inlet of the backup pressure control pipeline 230 to the outlet of the backup pressure control pipeline 230. The first connecting valve L1 is connected to the inlet of the backup pressure control pipeline 230, and the outlet of the backup pressure control pipeline 230 is connected to the outlet pipeline of the bypass pipeline 220 and indirectly connected to the third connecting valve L3.

[0051] In this embodiment, when the main pressure control pipeline 210 is under maintenance or fails, the first backup pressure control flat valve 231, the backup pressure control valve K2 and the second backup pressure control flat valve 232 can be opened to control the pressure of the drilling fluid through the backup pressure control pipeline 230 to ensure the safety and smooth progress of the drilling operation.

[0052] like Figure 2 As shown, in some embodiments, the pressure control manifold 200 further includes a detection pipeline 240. The detection pipeline 240 includes a detection plate valve 241 and a mass flowmeter 242. The detection plate valve 241 and the mass flowmeter 242 are sequentially connected in pipelines from the inlet of the detection pipeline 240 to the outlet of the detection pipeline 240. The inlet of the detection pipeline 240 is connected to the outlet of the backup pressure control pipeline 230. The throttling pressure control manifold device 1000 further includes a fourth connecting valve L4, which is connected to the outlet of the detection pipeline 240, and the fourth connecting valve L4 is connected to the connection point between the second backup throttling plate valve 132 and the third backup throttling plate valve 133.

[0053] In this embodiment, the drilling fluid after pressure control through the main pressure control pipeline 210 and the backup pressure control pipeline 230 can be tested for quality and density through the mass flowmeter 242 when the drilling fluid returns to the throttling manifold 100 from the fourth connecting valve L4 by opening the detection flat valve 241 of the detection pipeline 240, so as to timely discover potential safety hazards and take corresponding preventive measures to reduce the risk of drilling operations and improve the safety of operations.

[0054] In some embodiments, the throttle pressure control manifold device 1000 further includes a base and a lifting assembly. The base is connected to the lifting assembly. The base includes a mounting surface, and the throttle pressure control manifold device 1000 is mounted on the mounting surface.

[0055] In this embodiment, the height adjustment of the throttling and pressure-controlling manifold device 1000 is achieved by adjusting the lifting and lowering of the lifting assembly to drive the throttling and pressure-controlling device disposed on the mounting surface of the base to move up and down.

[0056] While the present invention has been described with reference to preferred embodiments, various modifications may be made and equivalent components may be substituted without departing from the scope of the present invention. In particular, the various technical features described in the various embodiments may be combined in any manner, provided no structural conflicts exist. The present invention is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions within the scope of the claims.

Claims

1. A throttling and pressure-controlling manifold device, characterized in that: It includes a throttling manifold, a pressure control manifold, a first connecting valve, a second connecting valve and a third connecting valve. The throttling manifold and the pressure control manifold are spaced apart along the first direction, and the throttling manifold is connected to the pressure control manifold at the first connecting valve, the second connecting valve and the third connecting valve. The throttling manifold includes a main throttling pipeline, and the pressure control manifold includes a main pressure control pipeline, wherein the first connecting valve is connected to the inlet of the main throttling pipeline, and the first connecting valve is connected to the inlet of the main pressure control pipeline; the second connecting valve is connected to the outlet of the throttling manifold, and the second connecting valve is connected to the inlet of the pressure control manifold; the third connecting valve is connected to the outlet of the main throttling pipeline, and the third connecting valve is connected to the outlet of the pressure control manifold.

2. The throttling and pressure-controlling manifold device according to claim 1, characterized in that: The main throttling pipeline includes a first main throttling flat valve, a main throttling valve and a second main throttling flat valve. The first main throttling flat valve, the main throttling valve and the second main throttling flat valve are connected in sequence by pipelines from the main throttling pipeline inlet to the main throttling pipeline outlet. The second connecting valve is connected between the main throttling valve and the second main throttling flat valve.

3. The throttling and pressure-controlling manifold device according to claim 2, characterized in that: The main pressure control pipeline includes a main pressure control valve, and the main pressure control valve is arranged between the inlet of the main pressure control pipeline and the outlet of the main pressure control pipeline.

4. The throttling and pressure-controlling manifold device according to claim 3, characterized in that: The throttle manifold also includes a blowout pipe, which is connected in parallel with the main throttle pipe. The blowout pipe includes a first blowout prevention flat valve, which is arranged between the inlet and outlet of the blowout pipe.

5. The throttling and pressure-controlling manifold device according to claim 4, characterized in that: The throttling manifold also includes a spare throttling pipe, which is connected in parallel with the main throttling pipe. The spare throttling pipe includes a first spare throttling flat valve and a spare throttling valve. The first spare throttling flat valve and the spare throttling valve are connected in sequence by pipelines through the inlet of the spare throttling pipe and the outlet of the spare throttling pipe.

6. The throttling and pressure-controlling manifold device according to claim 5, characterized in that: The main throttle pipeline further includes a third main throttle flat valve, which is arranged between the second main throttle flat valve and the outlet of the main throttle pipeline; the blowout pipeline further includes a second blowout preventer flat valve, which is arranged between the first blowout preventer flat valve and the outlet of the blowout pipeline; the backup throttle pipeline further includes a second backup throttle flat valve and a third backup throttle flat valve, which are sequentially arranged between the backup throttle valve and the outlet of the backup throttle pipeline, and the outlet of the backup throttle pipeline is used to connect to an oil-gas separator. Among them, the connection between the second main throttle flat valve and the third main throttle flat valve, the connection between the first blowout preventer flat valve and the second blowout preventer flat valve, and the connection between the second backup throttle flat valve and the third backup throttle flat valve are sequentially connected by pipelines, and the third connecting valve is connected between the first blowout preventer flat valve and the second blowout preventer flat valve.

7. The throttling and pressure-controlling manifold device according to claim 6, characterized in that: The pressure control manifold further includes a bypass pipeline, which is arranged in parallel with the main pressure control pipeline. The bypass pipeline includes a bypass flat valve, which is arranged between the inlet and the outlet of the bypass pipeline. The first connecting valve is connected to the inlet of the bypass pipeline, and the connection between the inlet of the bypass pipeline and the bypass flat valve is connected to the second connecting valve through a pipeline. The third connecting valve is connected to the outlet of the bypass pipeline. The main control pressure pipeline also includes a second main control pressure plate valve, which is arranged between the main control pressure valve and the outlet of the main control pressure pipeline. The outlet of the main control pressure pipeline is connected to the outlet pipeline of the bypass pipeline and is indirectly connected to the third connecting valve.

8. The throttling and pressure-controlling manifold device according to claim 7, characterized in that: The pressure control manifold also includes a spare pressure control pipeline, which is connected in parallel with the main pressure control pipeline and the bypass pipeline respectively. The spare pressure control pipeline includes a first spare pressure control flat valve, a spare pressure control valve and a second spare pressure control flat valve. The first spare pressure control flat valve, the spare pressure control valve and the second spare pressure control flat valve are connected in sequence from the inlet of the spare pressure control pipeline to the outlet of the spare pressure control pipeline. The first connecting valve is connected to the inlet of the spare pressure control pipeline, and the outlet of the spare pressure control pipeline is connected to the outlet pipeline of the bypass pipeline and indirectly connected to the third connecting valve.

9. The throttling and pressure-controlling manifold device according to claim 8, characterized in that: The pressure control manifold further includes a detection pipeline, which includes a detection flat valve and a mass flow meter. The detection flat valve and the mass flow meter are sequentially connected by pipelines from the inlet of the detection pipeline to the outlet of the detection pipeline. The inlet of the detection pipeline is connected to the outlet of the standby pressure control pipeline. The throttling pressure control manifold device also includes a fourth connecting valve, which is connected to the outlet of the detection pipeline and is connected to the connection between the second backup throttling flat valve and the third backup throttling flat valve.

10. The throttling and pressure-controlling manifold device according to any one of claims 1 to 9, characterized in that: It also includes a base and a lifting assembly, the base is connected to the lifting assembly, the base includes a mounting surface, and the throttling and pressure control manifold device is installed on the mounting surface.

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