Integral throttle manifold and control method

Abstract

The present invention provides an integral throttle manifold and a control method. The integral throttle manifold includes a housing, a first valve body assembly, a hydraulic wedge throttle valve, and an adjustment assembly. A first flow passage and a transfer flow passage are provided inside the housing. The head and the tail of the transfer flow passage are both communicated with the first flow passage. The housing is further provided with a slurry inlet and a slurry outlet that are communicated with both ends of the first flow passage. The first valve body assembly is arranged on the housing, and the valve plate of the first valve body assembly is movably arranged inside the transfer flow passage for adjusting the opening and closing of the transfer flow passage. The hydraulic wedge throttle valve is arranged on the housing, and the valve body end of the hydraulic wedge throttle valve is arranged inside the transfer flow passage for adjusting the fluid pressure of the transfer flow passage. The adjustment assembly is arranged at the bottom of the housing, and the adjustment assembly supports the housing for adjusting the height of the housing. This application can solve the problem in the prior art that the throttle manifold applied to the wellbore is inconvenient to install and operate, resulting in the influence on work efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of petroleum, and in particular, to an integral choke manifold and a control method thereof. Background Art

[0002] In oil and gas drilling operations, it is crucial to maintain the balance between the bottom hole pressure and the formation pressure to prevent the mud in the wellbore from being contaminated by formation fluids, resulting in the imbalance between the mud hydrostatic pressure and the formation pressure, thereby triggering accidents such as overflow or kick. To cope with such risks, a choke manifold structure is commonly used at the drilling site. The traditional choke manifold consists of multiple independent components, such as valves, four-way connectors, five-way connectors, pipelines, and flanges. These components are connected by bolts and nuts. Although this modular assembly method facilitates the replacement of components to a certain extent, during on-site assembly and maintenance, a large number of pipelines and valves need to be disassembled, and multiple valves are all manual gate valves, which require manual operation during use, with complex operations, time-consuming and laborious, reducing the operation efficiency; and due to the uncertainty of the on-site operation environment in the prior art, the choke manifold composed of multiple independent components has the problem of inconvenient adaptation and installation on site, resulting in the impact on work efficiency.

[0003] As can be seen from the above, the choke manifold applied to the wellbore in the prior art has the problems of inconvenient installation and operation, resulting in the impact on work efficiency. Summary of the Invention

[0004] The main object of the present invention is to provide an integral choke manifold and a control method thereof to solve the problems of inconvenient installation and operation of the choke manifold applied to the wellbore in the prior art, resulting in the impact on work efficiency.

[0005] To achieve the above object, according to one aspect of the present invention, there is provided an integral choke manifold. The integral choke manifold includes a housing, a first valve body assembly, a hydraulic wedge choke valve, and an adjustment assembly. A first flow channel and a transfer flow channel are provided inside the housing. The head and the tail of the transfer flow channel are both communicated with the first flow channel. The housing is further provided with a mud inlet and a mud outlet communicated with both ends of the first flow channel. The first valve body assembly is disposed in the housing, and the valve plate of the first valve body assembly is movably disposed inside the transfer flow channel for adjusting the opening and closing of the transfer flow channel. The hydraulic wedge choke valve is disposed in the housing, and the valve body end of the hydraulic wedge choke valve is disposed inside the transfer flow channel for adjusting the fluid pressure of the transfer flow channel. The adjustment assembly is disposed at the bottom of the housing, and the adjustment assembly supports the housing for adjusting the height of the housing.

[0006] Further, the first flow channel extends along the length direction of the housing. Along the length direction of the housing, the head of the transfer flow channel is disposed close to the mud inlet, and the tail of the transfer flow channel is disposed close to the mud outlet.

[0007] Further, along the extension direction of the transfer flow channel, first valve body assemblies are provided both upstream and downstream of the hydraulic wedge throttle valve.

[0008] Further, the transfer flow channel includes a second flow channel, a third flow channel, and a fourth flow channel that are sequentially connected and communicated; the first end of the second flow channel is the head end of the transfer flow channel and is communicated with the first flow channel, the second flow channel extends along the width direction of the housing, and at least one first valve body assembly is provided on the second flow channel; the third flow channel is parallel to the first flow channel and is provided at the second end of the second flow channel; the fourth flow channel is parallel to the second flow channel and is provided at one end of the third flow channel away from the second flow channel, the end of the fourth flow channel away from the connection with the third flow channel is the tail end of the transfer flow channel and is communicated with the first flow channel, a hydraulic wedge throttle valve is provided on the third flow channel and / or the fourth flow channel, and a first valve body assembly is provided on the fourth flow channel between the hydraulic wedge throttle valve and the tail end.

[0009] Further, the housing has first openings respectively communicated with the first end and the second end of the second flow channel, and the integral throttle manifold further includes a first flange detachably provided at the first opening for blocking or opening the first opening; and / or the housing has a communication channel communicated with the third flow channel, there is one or more communication channels, the communication channels extend along the width direction of the housing toward the side away from the first flow channel, the housing has second openings respectively communicated with the communication channels, and the integral throttle manifold further includes a second flange detachably provided at the second opening for blocking or opening the second opening.

[0010] Further, a fifth flow channel extending along the width direction of the housing is further provided inside the housing, one end of the fifth flow channel is communicated with the first flow channel, the other end of the fifth flow channel extends toward the side away from the transfer flow channel, a first valve body assembly is provided on the fifth flow channel, and the housing has a third opening communicated with the other end of the fifth flow channel; the integral throttle manifold further includes a third flange detachably provided at the third opening for blocking or opening the third opening.

[0011] Further, the first valve body assembly is a hydraulic flat valve, the hydraulic flat valve is fixed to the top of the housing, and the valve plate of the hydraulic flat valve is telescopically arranged inside the transfer flow channel for controlling the opening and closing of the transfer flow channel; and / or the hydraulic wedge throttle valve is fixedly arranged on the side surface of the housing circumference and partially extends into the inside of the transfer flow channel for pressure regulation.

[0012] Furthermore, multiple adjustment components are provided, and the multiple adjustment components are arranged at intervals. The adjustment components include a hydraulic cylinder, a first sensor, an abutment block and a base. The hydraulic cylinder is fixedly arranged on the bottom surface of the shell. Along the height direction of the shell, the hydraulic piston rod of the hydraulic cylinder extends toward the side away from the shell. An abutment block is provided at the end of the hydraulic piston rod away from the shell, and the abutment block abuts against the base. The first sensor is arranged inside the hydraulic cylinder, and the first sensor is used to detect the position of the hydraulic piston rod.

[0013] Furthermore, the integral throttling manifold also includes an oil station, a regulating valve and a controller. The oil station is connected to the regulating assembly and the first valve body assembly through a liquid supply pipe and a liquid return pipe, respectively. A regulating valve is provided on each liquid supply pipe. Each regulating valve independently regulates the corresponding liquid supply pipe. The controller is connected to multiple first sensors and multiple regulating valve signals.

[0014] According to one aspect of the present invention, a control method is provided, which is applied to the above-mentioned integrated throttle manifold, the integrated throttle manifold has a working mode and a pressure regulating mode, and the control method includes:

[0015] Obtain the start-up command and determine whether to execute the working mode or the pressure regulation mode according to whether well kick and overflow occur in the wellbore;

[0016] When no well kick or overflow occurs, the working mode is executed, the first valve body assembly is controlled to close and cut off the transfer flow channel, and the first flow channel is used for slurry circulation;

[0017] When a well kick or overflow occurs, the pressure regulation mode is executed, and the first valve body assembly and the hydraulic wedge throttle valve are controlled to open to adjust the slurry flow inside the transfer flow channel, so as to adjust the internal pressure of the wellbore by adjusting the slurry flow.

[0018] According to the technical solution of the present invention, the integral throttling manifold includes a shell, a first valve body assembly, a hydraulic wedge throttle valve and an adjusting assembly. A first flow channel and a transfer flow channel are arranged inside the shell. The head end and the tail end of the transfer flow channel are connected to the first flow channel. The shell is also provided with a slurry inlet and a slurry outlet connected to the two ends of the first flow channel. The first valve body assembly is arranged in the shell. The valve plate of the first valve body assembly is movably arranged in the transfer flow channel for adjusting the opening and closing of the transfer flow channel. The hydraulic wedge throttle valve is arranged in the shell. The valve body end of the hydraulic wedge throttle valve is arranged in the transfer flow channel for adjusting the fluid pressure of the transfer flow channel. The adjusting assembly is arranged at the bottom of the shell. The adjusting assembly supports the shell for adjusting the height of the shell.

[0019] As can be seen from the above, the integral throttle manifold of the present application adopts a structure that combines a housing, a first valve body assembly, and a hydraulic wedge throttle valve. The first valve body assembly and the hydraulic wedge throttle valve are fixed on the housing and cooperate with the transfer flow channel inside the housing. The overall structure is compact. The integral throttle manifold of the present application integrates and fixes multiple valves on the housing, and through the structure of arranging a first flow channel and a transfer flow channel inside the housing, it can not only be applied to the normal state of the wellbore, but also be applied to the situation of wellbore overflow, so as to meet the requirements of different scenarios of the wellbore and improve the flexibility of application. At the same time, the integral throttle manifold of the present application has a compact overall structure. During installation, only the corresponding pipelines need to be connected to the slurry inlet and outlet of the housing, which is convenient to operate and is conducive to improving the efficiency of structural installation. The present application can complete pressure regulation by adjusting the first valve body assembly and the hydraulic wedge throttle valve arranged on the housing to ensure a stable pressure difference between the inside and outside of the wellbore.

[0020] A first flow channel and a transfer flow channel are arranged inside the housing of the present application for slurry flow. When the wellbore pressure is normal, mud can only flow through the first flow channel. When wellbore overflow occurs, the transfer flow channel can be used to adjust the flow rate and flow of the supplied mud. The present application adjusts the pressure inside the transfer flow channel through the first valve body assembly and the hydraulic wedge throttle valve, improving the convenience of application and the stability of regulation.

[0021] The present application is provided with an adjustment assembly at the bottom of the housing. Through the adjustment assembly, the height of the housing can be adjusted so that the housing is suitable for different application scenarios of the wellbore, and it can be adapted to different height sub-pipelines, improving the flexibility of the integral throttle manifold in on-site application. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings forming a part of this application are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0023] Figure 1 The top view of the integral throttle manifold of the present invention is shown;

[0024] Figure 2 The side view of the integral throttle manifold of the present invention is shown;

[0025] Figure 3 The structural schematic diagram of the first valve body assembly of the present invention is shown;

[0026] Figure 4 The structural schematic diagram of the adjustment assembly of the present invention is shown;

[0027] Figure 5 The logic block diagram of the control method of the present invention is shown.

[0028] Among them, the above-mentioned drawings include the following reference numerals:

[0029] 10. Housing; 110. Feed slurry port; 120. Discharge slurry port; 20. First valve body assembly; 210. First cylinder block; 220. First piston rod; 230. Valve plate; 240. Second sensor; 30. Hydraulic wedge throttle valve; 40. First flange; 50. Second flange; 60. Third flange; 70. Adjustment assembly; 710. Hydraulic cylinder; 720. Base; 730. Hydraulic piston rod; 740. First sensor; 750. Abutting block; 80. Universal lifting ring. Detailed implementation manners

[0030] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments may be combined with each other. The present invention will be described in detail below with reference to the drawings and in conjunction with the embodiments.

[0031] It should be pointed out that unless otherwise specified, all technical and scientific terms used in the present application have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present application belongs.

[0032] In the present invention, unless otherwise stated, the orientation words such as "upper, lower, top, bottom" are generally in the direction shown in the drawings, or in the vertical, perpendicular or gravitational direction of the component itself; similarly, for the convenience of understanding and description, "inner, outer" refer to the inner and outer of the contour of each component itself, but the above orientation words do not limit the present invention.

[0033] In order to solve the problem that the throttle manifold applied to the wellbore in the prior art is inconvenient to install and operate, resulting in the influence on work efficiency, the present application provides an integral throttle manifold.

[0034] Among them, the integral throttle manifold of the present application is applied to the wellbore and is arranged on the pipeline communicated with the wellbore.

[0035] Specifically, the throttle manifold of the present application can be applied to the situations of well kick and overflow occurring and not occurring. When a well kick occurs in the wellbore, the integral throttle manifold performs a pressure relief operation by adjusting the flow rate of mud and the like inside the pipeline, and further realizes the stability of adjusting the pressure inside the wellbore, so that the liquid and the like inside the wellbore flow out stably, for example, stably outputting the mud to the mud pit.

[0036] Such as Figures 1 to 4As shown in the figure, the integral throttle manifold includes a housing 10, a first valve body assembly 20, and a hydraulic wedge throttle valve 30. A first flow channel and a transfer flow channel are provided inside the housing 10. The head and the tail of the transfer flow channel are both communicated with the first flow channel. The housing 10 is also provided with a slurry inlet 110 and a slurry outlet 120 that are communicated with both ends of the first flow channel. The first valve body assembly 20 is disposed in the housing 10, and the valve plate 230 of the first valve body assembly 20 is movably disposed inside the transfer flow channel to regulate the opening and closing of the transfer flow channel. The hydraulic wedge throttle valve 30 is disposed in the housing 10, and the valve body end of the hydraulic wedge throttle valve 30 is disposed inside the transfer flow channel to regulate the fluid pressure of the transfer flow channel.

[0037] Among them, the first valve body assembly 20 is a hydraulic flat valve, and the first valve body assembly 20 is fixedly disposed on the top of the housing 10; by extending the valve plate 230 into the transfer flow channel inside the housing 10 and adjusting the position of the valve plate 230 along the height direction of the housing 10, it is used to control the opening and closing of the transfer flow channel, thereby realizing the opening or closing of the transfer flow channel. It is also possible to control the flow area of the transfer flow channel by adjusting the position of the valve plate 230 to block part of the transfer flow channel, so as to control the flow rate of the liquid. The structures and principles of the hydraulic flat valve and the hydraulic wedge throttle valve 30 in this application are similar to those in the prior art, and they are not the invention points of this application.

[0038] Specifically, a first flow channel and a transfer flow channel are provided inside the housing 10. When there is no overflow in the wellbore under normal conditions, the slurry inside the wellbore flows through the first flow channel and is communicated with the pipeline and flows towards the mud pit; when the pressure inside the wellbore increases and causes overflow, at this time, the slurry flows into the transfer flow channel, and by controlling the first valve body assembly 20 and the hydraulic wedge throttle valve 30, the flow rate of the slurry is controlled, thereby realizing the regulation of the fluid pressure inside the wellbore to solve the problem of overflow.

[0039] The integral throttle manifold of the present application adopts a structure in which a housing 10, a first valve body assembly 20, and a hydraulic wedge throttle valve 30 are combined. The first valve body assembly 20 and the hydraulic wedge throttle valve 30 are fixed on the housing 10 and cooperate with the transfer flow channel inside the housing 10, and the overall structure is compact. The integral throttle manifold of the present application integrates and fixes multiple valves on the housing 10, and by setting a first flow channel and a transfer flow channel inside the housing 10, it can not only be applied to the normal state of the wellbore, but also be applied to the situation of wellbore overflow, so as to meet the requirements of different scenarios of the wellbore and improve the flexibility of application. At the same time, the integral throttle manifold of the present application has a compact overall structure. During installation, only the corresponding pipelines need to be connected to the slurry inlet 110 and the slurry outlet 120 of the housing 10, which is convenient for operation and is conducive to improving the efficiency of structural installation. The present application can complete pressure regulation by adjusting the first valve body assembly 20 and the hydraulic wedge throttle valve 30 provided on the housing 10 to ensure a stable pressure difference between the inside and outside of the wellbore.

[0040] In this embodiment, the hydraulic wedge throttle valve 30 is fixedly arranged on the side surface of the circumferential surface of the housing 10 and partially extends into the inside of the transfer flow channel for pressure regulation. By reasonably setting the position of the hydraulic wedge throttle valve 30 in the present application, it is beneficial to improve the compactness of the structure of the integral throttle valve. At the same time, fixedly arranging the hydraulic wedge throttle valve 30 on the side surface of the housing 10 is conducive to conveniently controlling the flow rate of the slurry inside the transfer flow channel.

[0041] In the housing 10 of the integral throttle manifold of the application, it is a cubic structure, and the length direction of the housing 10 is Figure 1 and Figure 2 the X direction shown, the width direction of the housing 10 is Figure 1 the Y direction shown, and the height direction of the housing 10 is Figure 2 the Z direction shown.

[0042] As Figure 1 and Figure 2 shown, the head end of the transfer flow channel is for liquid inlet, the tail end is for liquid return, and the tail end and the head end of the transfer flow channel are respectively communicated with different positions of the first flow channel to form a connected channel structure.

[0043] Specifically, the first flow channel extends along the length direction of the housing 10. The slurry inlet 110 and the slurry outlet 120 are respectively arranged on two opposite side surfaces in the length direction of the housing 10. The slurry inlet 110, the first flow channel, and the slurry outlet 120 form a path for the slurry to flow through, and extending along the length direction of the housing 10 is beneficial to improving the smoothness of the flow. Along the length direction of the housing 10, the head end of the transfer flow channel is arranged close to the slurry inlet 110, and the tail end of the transfer flow channel is arranged close to the slurry outlet 120, so as to facilitate adjusting the flow rate of the slurry by using the transfer flow channel when wellbore pressure relief is required.

[0044] In this embodiment, along the extending direction of the transfer flow channel, first valve body assemblies 20 are arranged both upstream and downstream of the hydraulic wedge throttle valve 30. Among them, the first valve body assembly 20 is used to control the opening and closing of the transfer flow channel. When the first valve body assembly 20 closes the transfer flow channel, slurry does not need to flow inside the transfer flow channel, and thus there is no need for the hydraulic wedge throttle valve 30 to act. The first valve body assembly 20 arranged upstream of the hydraulic wedge throttle valve 30 can prevent slurry from flowing into the hydraulic wedge throttle valve 30. Similarly, the first valve body assembly 20 arranged downstream of the hydraulic wedge throttle valve 30 is used to prevent slurry from flowing back to the hydraulic wedge throttle valve 30.

[0045] As Figures 1 to 4 shown, the transfer flow channel includes a second flow channel, a third flow channel, and a fourth flow channel that are sequentially connected. The first end of the second flow channel is the head end of the transfer flow channel and is connected to the first flow channel. The second flow channel extends along the width direction of the housing 10, and at least one first valve body assembly 20 is arranged on the second flow channel. The third flow channel is parallel to the first flow channel and is arranged at the second end of the second flow channel. The fourth flow channel is parallel to the second flow channel and is arranged at one end of the third flow channel away from the second flow channel. The end of the fourth flow channel away from the connection with the third flow channel is the tail end of the transfer flow channel and is connected to the first flow channel. The hydraulic wedge throttle valve 30 is arranged on the third flow channel and / or the fourth flow channel, and a first valve body assembly 20 is arranged on the fourth flow channel between the hydraulic wedge throttle valve 30 and the tail end.

[0046] Among them, the first flow channel, the second flow channel, the third flow channel, and the fourth flow channel cooperate to form a frame-shaped channel. Arranging the first valve body assembly 20 on the second flow channel can prevent slurry from flowing into the third flow channel and the fourth flow channel. Similarly, arranging the first valve body assembly 20 on the fourth flow channel can prevent slurry from flowing into the third flow channel and the second flow channel. Arranging the hydraulic wedge throttle valve 30 on the third flow channel and / or the fourth flow channel is beneficial for the hydraulic wedge throttle valve 30 to participate in the operation only when the flow rate of the slurry needs to be adjusted, avoiding the need to frequently clean the hydraulic wedge throttle valve 30 and the possible problems of the hydraulic wedge throttle valve 30 malfunctioning. In this embodiment, preferably, the hydraulic wedge throttle valve 30 is arranged at the corner position of the third flow channel and the fourth flow channel to facilitate the hydraulic wedge throttle valve 30 to adjust the flow rate of the slurry.

[0047] As Figures 1 to 4 shown, the housing 10 has a first opening that is respectively connected to the first end and the second end of the second flow channel. The integral throttle manifold further includes a first flange 40. The first flange 40 is a blind flange or a connecting flange, and the first flange 40 is detachably arranged at the first opening for plugging or opening the first opening.

[0048] Among them, the first end of the second flow channel is connected to the first opening on the shell 10, that is, the second flow channel can work independently as an independent flow channel. When the first flange 40 at the first opening is removed, the second flow channel can be independently supplied with slurry through the connecting pipeline. The shell 10 of the present application has technical means to provide mud diversion flow, and at this time the first opening is formed as a diverting slurry outlet 120.

[0049] In this embodiment, a first valve body assembly 20 is provided on the second end of the second flow channel, and the slurry flowing to the first opening is controlled by the first valve body. When the first opening needs to discharge liquid outward, the first valve body assembly 20 can be closed first. After the pipeline is connected to the first opening, the first valve body assembly 20 is opened to realize the flow of slurry in the second flow channel to the inside of the pipeline connected to the first opening.

[0050] Of course, the first opening can also be formed as an addition port, and liquid can be supplied to the interior of the second flow channel through the first opening and then communicated with the first flow channel to achieve liquid addition.

[0051] In this embodiment, the housing 10 has a connecting channel connected to the third flow channel, and one or more connecting channels are provided. The connecting channel extends along the width direction of the housing 10 toward the side away from the first flow channel. The hydraulic wedge throttle valve 30 is arranged downstream of the area where the connecting channel is connected to the third flow channel. The housing 10 has second openings respectively connected to the connecting channels. The integral throttling manifold also includes a second flange 50, which is a blind flange or a connecting flange. The second flange 50 is detachably arranged at the second opening for blocking or opening the second opening.

[0052] When a plurality of communication channels are provided, the plurality of communication channels are arranged at intervals along the extension direction of the third flow channel, that is, the length direction of the shell 10 .

[0053] Specifically, the second flow channel, the third flow channel and the connecting flow channel can cooperate to form an independent channel structure. The hydraulic wedge throttle valve 30 in the present application is arranged downstream of the area where the connecting channel is connected to the third flow channel, and does not participate in the flow control of the slurry when the second flow channel, the third flow channel and the connecting flow channel form a slurry channel. Similarly, the second opening can be an inlet or an addition port, and the liquid is supplied to the interior of the third flow channel through the second opening, and then connected to the second flow channel and the first flow channel in sequence to achieve liquid addition.

[0054] In this embodiment, a fifth flow channel extending along the width direction of the shell 10 is also provided in the shell 10, one end of the fifth flow channel is connected to the first flow channel, and the other end of the fifth flow channel extends toward the side away from the transfer flow channel, and a first valve body assembly 20 is provided on the fifth flow channel, and the shell 10 has a third opening connected to the other end of the fifth flow channel.

[0055] Among them, the fifth flow channel is formed as a leakage flow channel connected to the first flow channel, and is controlled to open and close by the first valve body assembly 20. It should be noted that during the normal use of the integral throttling manifold of the present application, the fifth flow channel remains closed and is only opened when a corresponding leakage demand is required.

[0056] Specifically, the integral throttling manifold further includes a third flange 60 , which is detachably disposed at the third opening for blocking or opening the third opening, and the third flange 60 is a blind flange or a connecting flange.

[0057] like Figure 2 and Figure 4 As shown, the integrated throttling manifold further includes an adjusting assembly 70 , which is disposed at the bottom of the housing 10 . The adjusting assembly 70 supports the housing 10 and is used to adjust the height of the housing 10 .

[0058] Specifically, a plurality of adjustment components 70 are arranged at the bottom of the shell 10, and the plurality of adjustment components 70 are arranged at intervals to form a structure of multiple supporting legs of the shell 10. The height of the shell 10 can be adjusted by the adjustment components 70, so that the shell 10 can be suitable for different applicable scenarios of the wellbore, so as to adapt to different height distribution pipeline settings, thereby improving the flexibility of the integrated throttling manifold in on-site application.

[0059] The four corners of the bottom surface of the housing 10 are each provided with an adjustment assembly 70 , and the plurality of adjustment assemblies 70 cooperate to adjust the height of the integral throttling manifold.

[0060] In this embodiment, the adjustment component 70 includes a hydraulic cylinder 710, a first sensor 740, an abutment block 750 and a base 720. The hydraulic cylinder 710 is fixedly arranged on the bottom surface of the shell 10. Along the height direction of the shell 10, the hydraulic piston rod 730 of the hydraulic cylinder 710 extends toward the side away from the shell 10. The end of the hydraulic piston rod 730 facing away from the shell 10 is provided with an abutment block 750, and the abutment block 750 abuts against the base 720. The first sensor 740 is arranged inside the hydraulic cylinder 710, and the first sensor 740 is used to detect the position of the hydraulic piston rod 730.

[0061] Among them, the hydraulic cylinder 710 has an oil inlet and an oil outlet. By controlling the oil inlet volume and the oil outlet volume, the hydraulic piston rod 730 is driven to move along the height direction of the housing 10, thereby realizing the adjustment of the distance between the base 720 and the housing 10; a first sensor 740 is provided on each of the plurality of adjustment assemblies 70 of the present application. The first sensor 740 is a displacement sensor, and the displacement sensor is arranged on one side of the top of the hydraulic piston rod 730. The present application detects the position of the hydraulic piston rod 730 inside the corresponding detection assembly through the first sensor 740. When the positions of the hydraulic piston rods 730 of its plurality of adjustment assemblies 70 are deviated, the oil inlet and outlet volumes of the corresponding adjustment assembly 70 are controlled to adjust the hydraulic piston rod 730, so as to ensure that the positions of the plurality of hydraulic piston rods 730 are the same. Furthermore, under the support of the plurality of adjustment assemblies 70, the housing 10 maintains the flatness of the horizontal plane, so that the housing 10 moves up and down along the height direction to be suitable for connection with structural members such as pipelines.

[0062] Of course, in some special application environments, for example, when the integral choke manifold is applied to an installation surface with a certain slope, the flatness of the horizontal plane of the housing 10 can also be maintained by controlling the position of the hydraulic piston rod 730 of the adjustment assembly 70.

[0063] In this embodiment, the integral choke manifold further includes an oil station, a regulating valve, and a controller. The oil station is respectively connected to the oil inlet and the oil outlet of the adjustment assembly 70 through a supply pipe and a return pipe. A regulating valve is provided on each supply pipe, and each regulating valve independently adjusts the corresponding supply pipe. The controller is signal-connected to the plurality of first sensors 740 and the plurality of regulating valves.

[0064] Specifically, the oil station is used to provide hydraulic oil. During normal use, when the housing 10 needs to be moved in the height direction, under the control of the controller, the opening degrees of the regulating valves are the same. At this time, the oil volumes flowing into the hydraulic cylinder 710 are the same, thereby ensuring that the plurality of adjustment assemblies 70 can act synchronously and cooperatively; when the first sensor 740 detects that the positions of the hydraulic piston rods 730 of some adjustment assemblies 70 are deviated, the controller controls the opening degree of the corresponding regulating valve to adaptively adjust the hydraulic oil volume of the hydraulic cylinder 710 of the corresponding adjustment assembly 70, and then adjusts the position of the hydraulic piston rod 730 to ensure that the plurality of adjustment assemblies 70 cooperate to ensure the flatness of the horizontal plane of the housing 10.

[0065] In this embodiment, the oil station, the regulating valve, and the controller are also used to realize the adjustment of the first valve body assembly 20. Specifically, the first valve body assembly 20 includes a first cylinder body 210 and a first valve body. The oil station is communicated with the oil inlet of the first cylinder body 210 through a supply pipe, and the return pipe of the oil station is communicated with the oil outlet of the first cylinder body 210. The position of the valve plate 230 of each first valve body assembly 20 is independently controlled by controlling the regulating valves on each pipeline through the controller.

[0066] Among them, multiple first valve body assemblies 20 provided in this application are all in liquid communication with the oil station to enable the oil station to supply hydraulic oil to the first valve body assemblies 20, thereby adjusting the position of the valve plate 230 of the first valve body assemblies 20. The overall structure of this application can independently or synchronously adjust the position of the valve plate 230 of multiple first valve body assemblies 20 under the control of the controller. The structural setting of the integral throttle manifold of this application is conducive to improving the control accuracy, realizing automatic adjustment, and improving the use efficiency.

[0067] Specifically, a second sensor 240 is provided on each of the first valve body assemblies 20. The second sensor 240 is a displacement sensor, and the second sensor 240 is used to detect the position of the valve plate 230. The second sensor 240 is arranged on the first cylinder block 210, and the position of the valve plate 230 is detected by detecting the position of the first piston rod 220 inside the first cylinder block 210. The controller controls the opening degree of the regulating valve to control the telescopic position of the valve plate 230 of the first valve body, and further controls the full opening, partial opening or closing of the transfer flow channel; the controller can independently control each first valve body assembly 20 to adaptively control the flow rate of the slurry at different positions of the transfer flow channel.

[0068] In this embodiment, the first valve body assemblies 20 at different positions can be controlled by the controller to control the flow path of the slurry. When pressure adjustment is required, the first valve body assemblies 20 on the transfer flow channel need to be opened, and the first opening, the second opening and the third opening are closed to connect the transfer flow channel with the first flow channel, so as to use the hydraulic wedge throttle valve 30 for flow rate adjustment and pressure adjustment.

[0069] Such as Figure 1 shown, in order to facilitate the movement of the integral throttle manifold, universal lifting rings 80 are provided on the top surface of the housing 10. The universal lifting rings 80 are arranged at the four corners of the top surface of the housing 10 to facilitate keeping the flatness of the housing 10 when moving the integral throttle manifold, and thus is conducive to realizing the stability of the overall structure.

[0070] In this embodiment, as Figure 5 shown, this application also provides a control method, which is applied to the above-mentioned integral throttle manifold. The integral throttle manifold of this application has a working mode and a pressure regulating mode. The control method includes:

[0071] Obtain a startup instruction and determine whether to execute the working mode or the pressure regulating mode based on whether a well kick and overflow occur in the wellbore. Among them, the acquisition of the instruction can be controlled through a remote mobile control structure such as a remote controller, specifically by sending a signal to the controller. When there is no overflow and well kick in the wellbore, the internal pressure at the bottom of the well is approximately constant; when an overflow occurs in the wellbore, its internal pressure will increase for a short time. At this time, the regulation mode is started to adjust the pressure through the integral choke manifold. Specifically, by controlling the flow rate of the slurry, the bottom hole pressure of the wellbore is adjusted to be slightly greater than the formation pressure, thereby effectively preventing formation fluid from further flowing into the interior of the wellbore and overcoming the phenomena of well kick and overflow.

[0072] When there is no well kick and overflow, the working mode is executed, and the first valve body assembly 20 is controlled to close to cut off the transfer flow channel. The first flow channel is used for liquid circulation; at this time, only the first flow channel serves as the channel for the slurry, and the slurry is transferred.

[0073] When there is a well kick and overflow, the pressure regulating mode is executed, and the first valve body assembly 20 is controlled to open to adjust the liquid flow rate inside the transfer flow channel for slurry flow rate regulation, and the hydraulic wedge throttle valve 30 is controlled to open to adjust the liquid flow rate inside the transfer flow channel to adjust the pressure of the wellbore by adjusting the flow rate of the slurry. Among them, the first valve body assembly 20 and the hydraulic wedge throttle valve 30 cooperate to adjust the flow rate of the slurry entering the interior of the transfer flow channel, thereby realizing pressure regulation, which is beneficial to improving the regulation efficiency.

[0074] In this embodiment, the use process of the integral choke manifold: When the integral choke manifold is installed, the housing 10 is supported to a preset height through the control of the adjustment assembly 70 to facilitate connection with pipes in different installation scenarios. The adjustment amplitude of each adjustment assembly 70 is detected through the first sensor 740 of the multiple adjustment assemblies 70, and then the height of the multiple adjustment assemblies 70 is adjusted through the controller to ensure the flatness of the housing 10.

[0075] When there is no overflow in the wellbore, the mud flows through the slurry inlet 110, the first flow channel, and the slurry outlet 120 in sequence and flows through the housing 10.

[0076] When there is an overflow in the wellbore, the controller controls the multiple first valve body assemblies 20 to open so that the slurry flows into the interior of the transfer flow channel, and the flow rate of the slurry is adjusted through the first valve body assembly 20 and the hydraulic wedge throttle valve 30 of the transfer flow channel, thereby realizing the adjustment of the pressure of the slurry to ensure the constancy of the internal pressure of the wellbore and thus solving the problem of overflow.

[0077] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0078] The integral choke manifold of the present application adopts a structure in which a housing 10, a first valve body assembly 20 and a hydraulic wedge choke valve 30 are combined. The first valve body assembly 20 and the hydraulic wedge choke valve 30 are fixed on the housing 10 and cooperate with the transfer flow channel inside the housing 10, and the overall structure is compact. The integral choke manifold of the present application integrates and fixes multiple valves on the housing 10, and through the structure of setting a first flow channel and a transfer flow channel inside the housing 10, it can not only be applied to the normal state of the wellbore, but also be applied to the situation of wellbore overflow, so as to meet the requirements of different scenarios of the wellbore and improve the applicability flexibility. At the same time, the integral choke manifold of the present application has a compact overall structure. During installation, only the corresponding pipelines need to be connected to the slurry inlet 110 and the slurry outlet 120 of the housing 10, which is convenient to operate and is beneficial to improving the installation efficiency of the structure. The present application can complete the pressure adjustment by adjusting the first valve body assembly 20 and the hydraulic wedge choke valve 30 provided on the housing 10 to ensure a stable pressure difference between the inside and outside of the wellbore.

[0079] A first flow channel and a transfer flow channel are arranged inside the housing 10 of the present application for slurry flow. When the wellbore pressure is normal, only mud can flow through the first flow channel. When wellbore overflow occurs, the transfer flow channel can be used to adjust the slurry flow rate and flow rate. The present application adjusts the pressure inside the transfer flow channel through the first valve body assembly 20 and the hydraulic wedge choke valve 30, improving the applicability convenience and adjustment stability.

[0080] The present application sets an adjustment assembly 70 at the bottom of the housing 10. The height of the housing 10 can be adjusted through the adjustment assembly 70 so that the housing 10 is suitable for different applicable scenarios of the wellbore, and is adapted to different height sub-pipelines, improving the flexibility of the integral choke manifold in on-site application.

[0081] Obviously, the above-described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0082] It should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0083] It should be noted that the terms "first", "second", etc. in the description, claims and above-mentioned drawings of this application are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0084] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An integrated throttling manifold, characterized in that: include: A shell (10), wherein a first flow channel and a transfer flow channel are arranged inside the shell (10), the head end and the tail end of the transfer flow channel are both in communication with the first flow channel, and the shell (10) is also provided with a slurry inlet (110) and a slurry outlet (120) in communication with both ends of the first flow channel; A first valve body assembly (20) is arranged on the housing (10), and a valve plate (230) of the first valve body assembly (20) is movably arranged inside the switching flow channel, and is used to adjust the opening and closing of the switching flow channel; A hydraulic wedge-shaped throttle valve (30) is arranged in the housing (10), and a valve body end of the hydraulic wedge-shaped throttle valve (30) is arranged inside the switching flow channel, and is used to adjust the fluid pressure in the switching flow channel; an adjustment component (70) disposed at the bottom of the shell (10), the adjustment component (70) supporting the shell (10) and being used to adjust the height of the shell (10); The first flow channel is extended along the length direction of the shell (10); along the length direction of the shell (10), the head end of the switching flow channel is arranged close to the pulp inlet (110), and the tail end of the switching flow channel is arranged close to the pulp outlet (120); The transfer flow channel includes a second flow channel, a third flow channel and a fourth flow channel which are connected in sequence; The first end of the second flow channel is the head end of the transfer flow channel and is connected to the first flow channel, the second flow channel extends along the width direction of the shell (10), and at least one of the first valve body components (20) is arranged on the second flow channel; The third flow channel is parallel to the first flow channel and is disposed at the second end of the second flow channel; The fourth flow channel is parallel to the second flow channel and is arranged at an end of the third flow channel away from the second flow channel; the end of the fourth flow channel away from the third flow channel is the tail end of the switching flow channel and is in communication with the first flow channel; the third flow channel and / or the fourth flow channel is provided with the hydraulic wedge throttle valve (30); and the first valve body assembly (20) is provided on the fourth flow channel between the hydraulic wedge throttle valve (30) and the tail end.

2. The integrated throttling manifold according to claim 1, characterized in that: Along the extension direction of the switching flow channel, the first valve body assembly (20) is provided both upstream and downstream of the hydraulic wedge throttle valve (30).

3. The integrated throttling manifold according to claim 1, characterized in that: The housing (10) has a first opening which is respectively connected to the first end and the second end of the second flow channel, and the integral throttling manifold further comprises a first flange (40), the first flange (40) being detachably arranged at the first opening and used for blocking or opening the first opening; and / or The housing (10) has a communication channel connected to the third flow channel, one or more communication channels are provided, and the communication channel extends along the width direction of the housing (10) toward a side away from the first flow channel. The hydraulic wedge throttle valve (30) is arranged downstream of an area where the communication channel is connected to the third flow channel. The housing (10) has second openings respectively connected to the communication channels. The integral throttle manifold further includes a second flange (50), and the second flange (50) is detachably arranged at the second opening for blocking or opening the second opening.

4. The integrated throttling manifold according to claim 1, characterized in that: A fifth flow channel extending in the width direction of the shell (10) is further provided in the shell (10), one end of the fifth flow channel being in communication with the first flow channel, the other end of the fifth flow channel extending towards a side away from the switching flow channel, the first valve body assembly (20) being provided on the fifth flow channel, and the shell (10) having a third opening in communication with the other end of the fifth flow channel; The integrated throttling manifold further comprises a third flange (60), wherein the third flange (60) is detachably arranged at the third opening and is used for blocking or opening the third opening.

5. The integrated throttling manifold according to claim 1, characterized in that: The first valve body assembly (20) is a hydraulically actuated flat valve, the hydraulically actuated flat valve being fixed to the top of the housing (10), the valve plate (230) of the hydraulically actuated flat valve being telescopically arranged inside the switching flow channel, and being used to control the opening and closing of the switching flow channel; and / or The hydraulic wedge-shaped throttle valve (30) is fixedly arranged on the peripheral side of the housing (10) and partially extends into the interior of the switching flow channel for pressure regulation.

6. The integrated throttling manifold according to any one of claims 1 to 5, characterized in that: A plurality of the adjustment components (70) are provided, and the plurality of the adjustment components (70) are arranged at intervals. The adjustment components (70) include: A hydraulic cylinder (710), the hydraulic cylinder (710) being fixedly arranged on the bottom surface of the housing (10), and the hydraulic piston rod (730) of the hydraulic cylinder (710) extending toward a side away from the housing (10) along the height direction of the housing (10); an abutment block (750) and a base (720), wherein the end of the hydraulic piston rod (730) facing away from the housing (10) is provided with the abutment block (750), and the abutment block (750) abuts against the base (720); The first sensor (740) is arranged inside the hydraulic cylinder (710), and the first sensor (740) is used to detect the position of the hydraulic piston rod (730).

7. The integrated throttling manifold according to claim 6, characterized in that: The integrated throttling manifold further comprises: an oil station, the oil station being connected to the regulating assembly (70) and the first valve body assembly (20) via a liquid supply pipe and a liquid return pipe respectively; A regulating valve, each of the liquid supply pipes is provided with the regulating valve, and each regulating valve independently regulates the corresponding liquid supply pipe; A controller is connected to the plurality of first sensors (740) and the plurality of regulating valve signals.

8. A control method, characterized in that: The integrated throttling manifold applied to any one of claims 1 to 7, wherein the integrated throttling manifold has a working mode and a pressure regulating mode, and the control method comprises: Obtaining a start instruction, and determining whether to execute the working mode or the pressure regulation mode according to whether well kick and overflow occur in the wellbore; When the well kick and overflow do not occur, the working mode is executed to control the first valve body assembly (20) to close and cut off the switching flow channel, the first flow channel being used for liquid circulation; When the well kick and overflow occur, the pressure regulation mode is executed, and the first valve body assembly (20) and the hydraulic wedge throttle valve (30) are controlled to open, so as to adjust the slurry flow rate inside the transfer flow channel, so as to adjust the pressure of the wellbore by adjusting the slurry flow rate.

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