Device and method for greatly reducing bridge shooting wellhead hydraulic pipelines

Abstract

The invention provides a device and method for greatly reducing bridge shooting wellhead hydraulic pipelines. The device comprises a plurality of integrated bridge shooting wellhead devices, and an electric control unit and a hydraulic valve set are arranged at the bottom of each integrated bridge shooting wellhead device. According to the device for greatly reducing the bridge shooting wellhead hydraulic pipelines, through mutual cooperation of the multiple integrated bridge shooting wellhead devices, the electric control unit, the hydraulic valve set, the main pipelines, the hydraulic pump sources and other structures, during bridge shooting wellhead operation, each integrated bridge shooting wellhead device only needs to be connected with the hydraulic pump sources through the two main pipelines, and the hydraulic pipelines are connected with the hydraulic pump sources through the main pipelines; a hydraulic pipeline does not need to be independently arranged for each component such as a blowout preventer and a lower catcher, the number of the pipelines is greatly reduced, the electric control unit is matched with the hydraulic valve set to achieve instruction analysis and hydraulic driving, the pipelines of all the components do not need to be manually arranged and operated one by one, and therefore the pipeline arrangement and storage process is simplified, the operation intensity and the transfer cost are reduced, and the working efficiency is improved. And efficient and orderly operation of multi-well operation is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of bridge-shot wellhead equipment technology, and in particular to a device and method for significantly reducing the hydraulic pipeline at the bridge-shot wellhead. Background Technology

[0002] In zippered wells and multi-well cable logging and perforation operations, the wellhead blowout preventer is installed on the upper part of the Christmas tree to seal the wellhead when cable accidents such as cable jamming or wire skipping occur. The lower catcher is a warning position used when logging instruments and gun strings are raised to the wellhead. It is a protective device to prevent the instruments from falling into the well due to various accidents after the logging instruments and gun strings have passed through. Above that is the wellhead quick-connect and disconnector, which is used to quickly connect and disconnect the tubing strings to improve operational efficiency.

[0003] Traditional operation involves connecting blowout preventers, lower catchers, inserters, and hydraulically controlled plug valves above the wellhead. These are all hydraulically controlled devices, controlled in groups according to their functions. Each device has many hydraulic lines; a single well requires at least 12 hydraulic lines, and three wellheads require even more. Therefore, traditional blowout preventers are very cumbersome to operate, require a high level of labor intensity, and are cumbersome to move and store. They also have disadvantages such as high cost, heavy weight, complex structure, and complicated operating procedures.

[0004] Therefore, it is necessary to provide a device and method to significantly reduce the hydraulic pipeline at the bridge-flying wellhead to solve the above-mentioned technical problems. Summary of the Invention

[0005] This invention provides a device and method for significantly reducing the number of hydraulic pipelines at bridge-flying wellheads, solving the problems of large number and complex wiring of traditional bridge-flying wellhead hydraulic pipelines, which leads to cumbersome operations, high workload, and inconvenience in relocation and storage.

[0006] To solve the above-mentioned technical problems, the present invention provides a device for significantly reducing the hydraulic pipeline at the bridge-flying wellhead, comprising: Multiple integrated bridge-flying wellhead devices are provided. Each of the multiple integrated bridge-flying wellhead devices is equipped with an electrical control unit and a hydraulic valve group at its bottom. Two main pipelines are installed on the hydraulic valve group, and a hydraulic pump source is installed at one end of each of the two main pipelines.

[0007] Preferably, each of the multiple integrated bridge-fuse wellhead devices includes a wellhead union flange, a blowout preventer (BFPP), a first twin-wire connector, a lower catch, a second twin-wire connector, a plug-in device, a plug-in device upper connector, and a stopcock valve. The BFPP is installed on top of the wellhead union flange, the first twin-wire connector is installed on top of the BFPP, the lower catch is installed on top of the first twin-wire connector, the stopcock valve is installed on the front of the lower catch, the second twin-wire connector is installed on top of the lower catch, the plug-in device is installed on top of the second twin-wire connector, and the plug-in device upper connector is installed on top of the plug-in device.

[0008] Preferably, the multiple integrated bridge-flying wellhead devices further include a blowout preventer cage and a working platform, wherein the blowout preventer cage is installed on the outer side of the blowout preventer, and the working platform is fixedly installed on the top of the blowout preventer cage.

[0009] Preferably, the electronic control unit and the hydraulic valve assembly are both installed on the inner side of the bottom of the blowout preventer cage.

[0010] Preferably, the hydraulic valve assembly is connected to the blowout preventer, the lower catcher, the plug valve, and the plug-in device via secondary pipes.

[0011] Preferably, the device for significantly reducing the hydraulic pipeline at the bridge-flying wellhead further includes a clamping assembly and two connecting assemblies. The clamping assembly is disposed on the outer side of the hydraulic valve assembly, and the two connecting assemblies are respectively disposed at both ends of the bottom of the clamping assembly for fixing the clamping assembly and the blowout preventer cage.

[0012] Preferably, the clamping assembly includes a base plate, a first threaded rod, two clamping plates, two first nuts, and two limiting plates. The base plate is disposed at the bottom of the hydraulic valve assembly. The first threaded rod is fixedly installed at the bottom of the base plate. The two clamping plates are respectively disposed on both sides of the hydraulic valve assembly, and their bottoms are sleeved on both ends of the outer side of the first threaded rod. The two first nuts are respectively threaded to both ends of the outer side of the first threaded rod. The two limiting plates are respectively fixedly installed on one side of the two clamping plates, and one end is slidably connected to the inside of the side of the base plate.

[0013] Preferably, both connecting components include a mounting frame, a slider, a telescopic rod, a locking screw, and a locking clamp. The mounting frame is fixedly installed on the bottom of the base plate, the slider is slidably connected to the inner side of the mounting frame, the telescopic rod is fixedly installed on both ends of the slider, the locking screw is threadedly connected to the top of the telescopic rod to restrict the free extension and retraction of the telescopic rod, and the locking clamp is installed on the moving end of the telescopic rod.

[0014] Preferably, the two connecting components further include a slide groove, a second threaded rod, and a second nut. The slide groove is formed at the bottom of the mounting frame. The second threaded rod is fixedly installed at the bottom of the slider and slidably connected to the inner side of the slide groove. The second nut is threadedly connected to the outer side of the second threaded rod and abuts against the bottom of the mounting frame.

[0015] To address the above problems, the present invention also provides a method for significantly reducing the hydraulic pipeline at the bridge-flying wellhead, comprising the following steps: S1. Device Installation and Pipeline Connection: In chain well or multi-well operation sites, the integrated bridge-jetting wellhead device of each wellhead is sealed and fixed to the top flange of the wellhead through the wellhead union transition flange to form a rigid whole; the electrical control unit is fixedly installed on the crossbeam on the right side below the blowout preventer cage, and the hydraulic valve group is fixed on the mounting bracket on the left side below the blowout preventer cage. The connection between the hydraulic valve group and the blowout preventer cage is reinforced by clamping components and connecting components; a two-level distributed wiring structure is adopted, with two main pipelines (P-port inlet pipeline and T-port return pipeline) leading out from the central hydraulic pump source and connected to the hydraulic valve group of the wellhead respectively (each hydraulic valve group is connected to two main pipelines). Then, through short rubber hoses with a length ≤2.5 meters, the integrated valve block of the hydraulic valve group is connected to the hydraulic interfaces of each gate chamber, lower catcher, inserter, and plug valve of the blowout preventer one by one; S2. System Initialization and Parameter Configuration: Start the central hydraulic pump power source and the electrical control units at each wellhead. Complete the system self-test through the human-machine interface of the main control center to confirm the sealing of hydraulic pipeline connections, the communication status between the electrical control unit and the PLC, and the normality of the position sensor signals of each functional component. Preset interlock logic parameters in the PLC, including the interlocking sequence of the action of the inserter locking block and the locking disc, the emergency shutdown trigger condition, etc., and complete the setting of operation permissions and action response thresholds. S3. Command Issuance and Local Parsing: The operator selects the target wellhead and the required action (such as blowout preventer closing, lower catcher opening, etc.) on the human-machine interface of the main control center, triggering the control command; the command is transmitted to the electrical control box switch at the target wellhead through the fieldbus, and then forwarded to the PLC by the switch. After receiving the command, the PLC performs logical judgment, and after confirming that there are no interlock restrictions or abnormal working conditions, it generates the corresponding execution signal. S4. Hydraulic Drive and Action Execution: The PLC drive output module controls the corresponding solenoid directional valve in the hydraulic valve group to be energized and reversed. The high-pressure oil delivered by the central hydraulic pump enters the integrated valve block of the hydraulic valve group through the main pipeline, and is distributed to the oil inlet chamber of the hydraulic cylinder of the corresponding functional component through the internal preset flow channel, pushing the component to complete the specified action; during the action execution, the hydraulic cylinder return oil returns to the hydraulic pump source oil tank through the return oil flow channel of the integrated valve block and the main pipeline. S5. Status Feedback and System Reset: Position sensors on functional components collect action completion status signals in real time and feed them back to the local PLC. The PLC transmits the status information back to the main control center via the bus and displays the action completion result on the human-machine interface (e.g., "Wellhead Blowout Preventer 1 is closed"). After a single operation is completed, the operator can issue a reset command through the human-machine interface. The system controls each component to return to its initial state, and the hydraulic lines maintain standby pressure, waiting for the next operation command.

[0016] Compared with related technologies, the device and method provided by the present invention for significantly reducing the hydraulic pipeline at the bridge-flying wellhead have the following beneficial effects: This invention provides a device that significantly reduces hydraulic pipelines at bridge-flying wellheads. Through the coordinated operation of multiple integrated bridge-flying wellhead devices, an electrical control unit, hydraulic valve assemblies, main pipelines, and hydraulic pump sources, each integrated bridge-flying wellhead device only needs to be connected to the hydraulic pump source via two main pipelines during bridge-flying wellhead operations. This eliminates the need for separate hydraulic pipelines for each component, such as the blowout preventer and lower capture device, significantly reducing the number of pipelines. The electrical control unit and hydraulic valve assemblies work together to interpret commands and drive hydraulically, eliminating the need for manual arrangement and operation of each component's pipeline. This simplifies pipeline routing and storage, reduces workload and relocation costs, and ensures efficient and orderly multi-well operations. Attached Figure Description

[0017] Figure 1 A schematic diagram of the first embodiment of a device for significantly reducing hydraulic pipelines at bridge-flying wellheads provided by the present invention; Figure 2 for Figure 1 The diagram shows the structure of a single integrated bridge-jet wellhead device connected to a hydraulic pump source. Figure 3 for Figure 1 The diagram shows the structure of the integrated bridge-jet wellhead device. Figure 4 A schematic diagram of the circuit and hydraulic system of the device for significantly reducing the hydraulic pipeline at the bridge-flying wellhead provided by the present invention; Figure 5 A schematic diagram of a second embodiment of a device for significantly reducing hydraulic lines at bridge-flying wellheads provided by the present invention; Figure 6 for Figure 5 The diagram shows the structure of the clamping and connecting components.

[0018] The diagram is labeled as follows: 1. Integrated bridge-jet wellhead assembly; 10. Wellhead union flange; 11. Blowout preventer cage; 12. Blowout preventer; 13. First double-threaded connector; 14. Lower catcher; 15. Second double-threaded connector; 16. Insertor / puller; 17. Upper connector of insertor / puller; 18. Plug valve; 19. Working platform; 2. Electrical control unit; 3. Hydraulic valve assembly; 4. Main pipeline; 5. Hydraulic pump source; 6. Clamping assembly; 61. Base plate; 62. First threaded rod; 63. Clamping plate; 64. First nut; 65. Limiting plate; 7. Connecting assembly; 71. Mounting frame; 72. Slide groove; 73. Slider; 74. Second threaded rod; 75. Second nut; 76. Telescopic rod; 77. Locking screw; 78. Locking clamp. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] First Embodiment

[0021] Please refer to the following: Figure 1 , Figure 2 , Figure 3 , Figure 4 ,in, Figure 1 A schematic diagram of the first embodiment of a device for significantly reducing hydraulic pipelines at bridge-flying wellheads provided by the present invention; Figure 2 for Figure 1 The diagram shows the structure of a single integrated bridge-jet wellhead device connected to a hydraulic pump source. Figure 3 for Figure 1 The diagram shows the structure of the integrated bridge-jet wellhead device. Figure 4 The schematic diagram of the circuit and fluid path of the device for significantly reducing the hydraulic pipeline at the bridge-flying wellhead provided by the present invention.

[0022] A device for significantly reducing hydraulic pipelines at bridge-flying wellheads includes: multiple integrated bridge-flying wellhead devices 1, each of the multiple integrated bridge-flying wellhead devices 1 having an electrical control unit 2 and a hydraulic valve group 3 at its bottom, the hydraulic valve group 3 having two main pipelines 4 installed on it, and a hydraulic pump source 5 installed at one end of each of the two main pipelines 4.

[0023] Each of the aforementioned integrated bridge-fuse wellhead devices 1 includes a wellhead union flange 10, a blowout preventer 12, a first twin-wire connector 13, a lower catch 14, a second twin-wire connector 15, a plug-in device 16, a plug-in device upper connector 17, and a stop valve 18. The blowout preventer 12 is installed on top of the wellhead union flange 10, the first twin-wire connector 13 is installed on top of the blowout preventer 12, the lower catch 16 is installed on top of the first twin-wire connector 13, the stop valve 18 is installed on the front of the lower catch 14, the second twin-wire connector 15 is installed on top of the lower catch 14, the plug-in device 16 is installed on top of the second twin-wire connector 15, and the plug-in device upper connector 17 is installed on top of the plug-in device 16.

[0024] The multiple integrated bridge-flying wellhead devices 1 also include a blowout preventer cage 11 and a working platform 19. The blowout preventer cage 11 is installed on the outer side of the blowout preventer 12, and the working platform 19 is fixedly installed on the top of the blowout preventer cage 11.

[0025] Both the electronic control unit 2 and the hydraulic valve group 3 are installed on the inner side of the bottom of the blowout preventer cage 11.

[0026] The hydraulic valve assembly 3 is connected to the blowout preventer 12, the lower catcher 14, the plug valve 18 and the plug-in device 16 via secondary pipes.

[0027] The electrical control unit 2 is located in the electrical control box on the right side below the local blowout preventer cage 11. The electrical control box is also equipped with: power supply, Siemens S7-1200 series controller, switch for human-machine interface networking, drive module, various switches and wiring terminals. Hydraulic valve assembly 3 is located on the left side below the local blowout preventer cage 11. Inside the hydraulic valve assembly 3 are: an integrated valve block, a three-position four-way solenoid directional valve, and each valve independently controls an actuator cylinder on a functional component. For example, the blowout preventer 12 is divided into an upper gate chamber, a middle gate chamber, and a lower gate chamber. Therefore, three three-position four-way solenoid directional valves are needed to complete the opening and closing of the three gate chambers of the blowout preventer 12. There are also various connectors and accessories. Hydraulic oil flow direction: Hydraulic oil in the tank → Hydraulic oil pump → Hose connecting the hydraulic pump and wellhead X → Hydraulic valve assembly 3 → Integrated valve block → Solenoid valve inlet channel → Integrated valve block → Hose from hydraulic valve assembly to functional component → Inlet chamber of hydraulic cylinder on functional component → Outlet chamber of hydraulic valve assembly 3 to hydraulic cylinder on functional component → Hose from functional component to solenoid valve → Integrated valve block → Outlet channel of solenoid valve → Integrated valve block → Hydraulic valve assembly 3 → Hose connecting the hydraulic pump and wellhead X → Hydraulic oil returns to the tank. Wiring structure: Primary pipeline (main pipeline 4): The pipeline from the central hydraulic pump source 5 to each wellhead is the main pipeline 4, which consists of only 2 (P / T) supply pipelines.

[0028] Please see Figure 1 When there are three wellheads, the first-level pipeline (main pipeline 4) consists of: the pipeline from the central hydraulic pump source 5 to the hydraulic valve group 3 at the wellhead, which is the main line, consisting of only 2 (P / T) supply pipelines, typically about 8 meters long at the well site; the pipeline from the central hydraulic pump source 5 to the hydraulic valve group 3 at the wellhead, consisting of only 2 (P / T) supply pipelines, typically about 8 meters long at the well site; and the pipeline from the central hydraulic pump source 5 to the hydraulic valve group 3 at the wellhead, consisting of only 2 (P / T) supply pipelines, typically about 8 meters long at the well site. Secondary pipelines (internal platform lines): Integrated within the blowout preventer cage 11 and the working platform 19, consisting of two hoses, each 1.1 meters long, running from the integrated valve block on the hydraulic valve assembly 3 to the hydraulic interface of the upper gate chamber of the blowout preventer 12; two hoses, each 0.9 meters long, running from the integrated valve block on the hydraulic valve assembly 3 to the hydraulic interface of the middle gate chamber of the blowout preventer 12; and two hoses, each 0.6 meters long, running from the integrated valve block on the hydraulic valve assembly 3 to the hydraulic interface of the lower gate chamber of the blowout preventer 12. Two hoses, each 1.9 meters long, run from the integrated valve block on hydraulic valve assembly 3 to the hydraulic interface of the lower catcher 14; two hoses, each 2.5 meters long, run from the integrated valve block on hydraulic valve assembly 3 to the hydraulic interface of the locking block on inserter 16; two hoses, each 2.5 meters long, run from the integrated valve block on hydraulic valve assembly 3 to the hydraulic interface of the locking disc on inserter 16; and two hoses, each 2.3 meters long, run from the integrated valve block on hydraulic valve assembly 3 to the hydraulic interface of plug valve 18.

[0029] The working principle of the device for significantly reducing the hydraulic pipeline at the wellhead provided by this invention is as follows: In multi-well operations, each integrated bridge-jetting wellhead device 1 is fixed to the wellhead via a wellhead flange 10 and sealed. The blowout preventer cage 11 provides support for the work platform 19. The electrical control unit 2 (with built-in PLC and communication module) and the hydraulic valve group 3 (integrated electromagnetic directional valve and flow channel block) are installed at the bottom of the blowout preventer cage 11. Two main pipelines 4 (P-port inlet and T-port return) are led out from the central hydraulic pump source 5 and connected to the hydraulic valve group 3 of each wellhead. Then, through short rubber hoses with a length of ≤2.5 meters, the hydraulic valve group 3 is connected to the hydraulic interfaces of the blowout preventer 12, lower catcher 14, plugger 16, and plug valve 18 to complete the pipeline layout. Start the hydraulic pump source 5 and the electrical control unit 2. Complete the self-test through the human-machine interface of the main control center to confirm that the pipeline sealing, communication and sensor signals are normal. The operator selects the target wellhead and action command (such as closing the blowout preventer 12). The command is transmitted to the target wellhead PLC via the bus. After the PLC analyzes the command, it controls the corresponding solenoid directional valve in the hydraulic valve group 3 to switch. High-pressure oil flows through the main pipeline and hydraulic valve group 3 to the blowout preventer cylinder, pushing the gate to close. The return oil returns to the oil tank through the main pipeline 4, realizing hydraulic drive. During the execution of the operation, the position sensor collects the status signal of the component, feeds it back to the PLC and transmits it back to the main control center, and displays the operation results in real time. The PLC has a preset interlock logic, such as prohibiting the blowout preventer 12 from operating when the plug-in device 16 is not locked, so as to avoid misoperation and ensure operation safety.

[0030] Compared with related technologies, the device provided by this invention, which significantly reduces the hydraulic pipeline at the bridge-flying wellhead, has the following beneficial effects: By cooperating with each other through multiple integrated bridge-jet wellhead devices 1, electrical control units 2, hydraulic valve groups 3, main pipelines 4, and hydraulic pump sources 5, each integrated bridge-jet wellhead device 1 only needs to be connected to the hydraulic pump source 5 through two main pipelines 4 during bridge-jet wellhead operations. There is no need to arrange hydraulic pipelines separately for each component such as blowout preventer 12 and lower catcher 14, which greatly reduces the number of pipelines. The electrical control unit 2 and the hydraulic valve group 3 work together to realize command interpretation and hydraulic drive, eliminating the need for manual arrangement and operation of each component pipeline, thereby simplifying the pipeline wiring and storage process, reducing the intensity of operation and relocation costs, and ensuring the efficient and orderly operation of multi-well operations.

[0031] Second Embodiment

[0032] Please refer to the following: Figure 5 and Figure 6 Based on the first embodiment of this application, which provides a device for significantly reducing hydraulic lines at the bridge-flying wellhead, the second embodiment of this application proposes another device for significantly reducing hydraulic lines at the bridge-flying wellhead. The second embodiment is merely a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the separate implementation of the first embodiment.

[0033] Specifically, the second embodiment of this application provides a device for significantly reducing hydraulic lines at the wellhead of a bridge-flying well, which differs in that the device for significantly reducing hydraulic lines at the wellhead of a bridge-flying well also includes a clamping assembly 6 and two connecting assemblies 7. The clamping assembly 6 is disposed on the outer side of the hydraulic valve assembly 3, and the two connecting assemblies 7 are respectively disposed at both ends of the bottom of the clamping assembly 6, for fixing the clamping assembly 6 and the blowout preventer cage 11.

[0034] The clamping assembly 6 includes a base plate 61, a first threaded rod 62, two clamping plates 63, two first nuts 64, and two limiting plates 65. The base plate 61 is disposed at the bottom of the hydraulic valve assembly 3. The first threaded rod 62 is fixedly installed at the bottom of the base plate 61. The two clamping plates 63 are respectively disposed on both sides of the hydraulic valve assembly 3, and their bottoms are sleeved on both ends of the outer side of the first threaded rod 62. The two first nuts 64 are respectively threaded to both ends of the outer side of the first threaded rod 62. The two limiting plates 65 are respectively fixedly installed on one side of the two clamping plates 63, and one end is slidably connected to the inside of the side of the base plate 61.

[0035] Both connecting components 7 include a mounting frame 71, a slider 73, a telescopic rod 76, a locking screw 77, and a locking clamp 78. The mounting frame 71 is fixedly installed on the bottom of the base plate 61. The slider 73 is slidably connected to the inner side of the mounting frame 71. The telescopic rod 76 is fixedly installed on both ends of the slider 73. The locking screw 77 is threadedly connected to the top of the telescopic rod 76 to restrict the free extension and retraction of the telescopic rod 76. The locking clamp 78 is installed on the moving end of the telescopic rod 76.

[0036] The two connecting components 7 further include a slide groove 72, a second threaded rod 74, and a second nut 76. The slide groove 72 is formed at the bottom of the mounting frame 71. The second threaded rod 74 is fixedly installed at the bottom of the slider 73 and slidably connected to the inner side of the slide groove 71. The second nut 76 is threadedly connected to the outer side of the second threaded rod 74 and abuts against the bottom of the mounting frame 71.

[0037] The working principle of the device for significantly reducing the hydraulic pipeline at the wellhead provided by this invention is as follows: The hydraulic valve assembly 3 is placed on top of the base plate 61. The two clamping plates 63 are slid to fit the sides of the valve assembly. The limiting plate 65 slides along the base plate 61 to guide the clamping plates 63 and prevent them from shifting. The first nuts 64 at both ends of the first threaded rod 62 are tightened to push the two clamping plates 63 to clamp the hydraulic valve assembly 3, thereby fixing the valve assembly laterally and adapting to hydraulic valve assemblies 3 of different widths. Slide the slider 73 in the sliding mounting frame 71 to adjust the position of the telescopic rod 76 so that the locking clamp 78 is aligned with the crossbeam of the blowout preventer cage 11; stretch the telescopic rod 76 to a suitable length, tighten the locking screw 77 to fix the telescopic rod 76, and then place the locking clamp sleeve 78 on the crossbeam of the cage and lock it; slide the second threaded rod 74 along the slide groove 72 to finely adjust its position, tighten the second nut 75 to abut against the bottom of the mounting frame, fix the position of the slider 73, and complete the stable connection between the hydraulic valve group 3 and the cage.

[0038] Compared with related technologies, the device provided by this invention, which significantly reduces the hydraulic pipeline at the bridge-flying wellhead, has the following beneficial effects: By using the clamping assembly 6 and connecting assembly 7 in cooperation with each other, when fixing the hydraulic valve assembly 3, the hydraulic valve assembly 3 is placed on the base plate 61, the clamping plate 63 is slidable and the first nut 64 is tightened to clamp the valve assembly. The limiting plate 65 ensures that the clamping plate 63 slides smoothly, without the need for a custom-made special fixing bracket. Then, the position of the telescopic rod 76 is adjusted by the slider 73, and after stretching, the locking screw 77 is tightened. The locking clamp 78 is used to fix it to the blowout preventer cage 11, and the second nut 75 is tightened to complete the positioning. There is no need for complicated welding or drilling for fixing, which simplifies the fixing operation steps and further improves the convenience of bridge-jetting wellhead operations.

[0039] To address the above problems, the present invention also provides a method for significantly reducing the hydraulic pipeline at the bridge-flying wellhead, comprising the following steps: S1. Device Installation and Pipeline Connection: At the site of chain well or multi-well arrangement operation, the integrated bridge-jetting wellhead device 1 of each wellhead is sealed and fixed to the top flange of the wellhead through the wellhead union transition flange to form a rigid whole; the electrical control unit 2 is fixedly installed on the crossbeam on the right side below the blowout preventer cage 11, and the hydraulic valve group 3 is fixed on the mounting bracket on the left side below the blowout preventer cage 11. The connection between the hydraulic valve group 3 and the blowout preventer cage is reinforced by the clamping component 6 and the connecting component 7; a two-level distributed wiring structure is adopted, and two main pipelines 4 (P-port oil inlet pipeline and T-port oil return pipeline) are led out from the central hydraulic pump source and connected to the hydraulic valve group 3 of the wellhead respectively (each hydraulic valve group 3 is connected to two main pipelines 4). Then, through short rubber hoses with a length ≤2.5 meters, the integrated valve block of the hydraulic valve group 3 is connected to the hydraulic interfaces of each gate chamber of the blowout preventer 12, the lower catcher 14, the plugger 16, and the plug valve 18 one by one; S2. System Initialization and Parameter Configuration: Start the central hydraulic pump source 5 and each wellhead electrical control unit 2. Complete the system self-test through the human-machine interface of the main control center to confirm the sealing of the hydraulic pipeline connection, the communication status between the electrical control unit 2 and the PLC, and the normality of the position sensor signals of each functional component. Preset the interlock logic parameters in the PLC, including the interlocking sequence of the locking block and locking disc of the plug-in / plug-out device 16, the emergency shutdown trigger condition, etc., and complete the setting of operation permissions and action response thresholds. S3. Command Issuance and Local Parsing: The operator selects the target wellhead and the required action (such as closing the blowout preventer 12, opening the lower capture device 14, etc.) on the human-machine interface of the main control center, triggering the control command; the command is transmitted to the electrical control box switch at the target wellhead through the fieldbus, and then forwarded to the PLC by the switch. After receiving the command, the PLC performs logical judgment, and after confirming that there are no interlock restrictions or abnormal working conditions, it generates the corresponding execution signal. S4. Hydraulic Drive and Action Execution: The PLC drive output module controls the corresponding solenoid directional valve in the hydraulic valve group 3 to be energized and reversed. The high-pressure oil delivered by the central hydraulic pump source 5 enters the integrated valve block of the hydraulic valve group 3 through the main pipeline 4, and is distributed to the oil inlet chamber of the hydraulic cylinder of the corresponding functional component through the internal preset flow channel, pushing the component to complete the specified action; during the action execution, the hydraulic cylinder return oil returns to the oil tank of the hydraulic pump source 5 through the return oil flow channel of the integrated valve block and the main pipeline 4. S5. Status Feedback and System Reset: Position sensors on functional components collect action completion status signals in real time and feed them back to the local PLC. The PLC transmits the status information back to the main control center via the bus and displays the action completion result on the human-machine interface (e.g., "Wellhead Blowout Preventer 12 is closed"). After a single operation is completed, the operator can issue a reset command through the human-machine interface. The system controls each component to return to its initial state, and the hydraulic pipeline maintains standby pressure, waiting for the next operation command.

[0040] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A device for significantly reducing the hydraulic pipeline at the wellhead during bridge-flying wells, characterized in that, include: Multiple integrated bridge-flying wellhead devices are provided. Each of the multiple integrated bridge-flying wellhead devices is equipped with an electrical control unit and a hydraulic valve group at its bottom. Two main pipelines are installed on the hydraulic valve group, and a hydraulic pump source is installed at one end of each of the two main pipelines.

2. The device for significantly reducing the hydraulic pipeline at the bridge-flying wellhead according to claim 1, characterized in that, Each of the aforementioned integrated bridge-fuse wellhead devices includes a wellhead union flange, a blowout preventer (BFPP), a first twin-wire connector, a lower catch, a second twin-wire connector, a plug-in device, a plug-in device upper connector, and a stopcock valve. The BFPP is installed on top of the wellhead union flange, the first twin-wire connector is installed on top of the BFPP, the lower catch is installed on top of the first twin-wire connector, the stopcock valve is installed on the front of the lower catch, the second twin-wire connector is installed on top of the lower catch, the plug-in device is installed on top of the second twin-wire connector, and the plug-in device upper connector is installed on top of the plug-in device.

3. The device for significantly reducing the hydraulic pipeline at the wellhead of a bridge-flying well, as described in claim 2, is characterized in that... The multiple integrated bridge-flying wellhead devices also include a blowout preventer cage and a working platform. The blowout preventer cage is installed on the outer side of the blowout preventer, and the working platform is fixedly installed on the top of the blowout preventer cage.

4. The device for significantly reducing the hydraulic pipeline at the bridge-flying wellhead according to claim 3, characterized in that, Both the electronic control unit and the hydraulic valve assembly are installed on the inner side of the bottom of the blowout preventer cage.

5. The device for significantly reducing the hydraulic pipeline at the bridge-flying wellhead according to claim 4, characterized in that, The hydraulic valve assembly is connected to the blowout preventer, the lower catcher, the plug valve, and the plug-in device via secondary pipes.

6. The device for significantly reducing the hydraulic pipeline at the bridge-flying wellhead according to claim 3, characterized in that, It also includes a clamping assembly and two connecting assemblies. The clamping assembly is disposed on the outer side of the hydraulic valve assembly, and the two connecting assemblies are respectively disposed at both ends of the bottom of the clamping assembly, for fixing the clamping assembly and the blowout preventer cage in place.

7. The device for significantly reducing the hydraulic pipeline at the bridge-flying wellhead according to claim 6, characterized in that, The clamping assembly includes a base plate, a first threaded rod, two clamping plates, two first nuts, and two limiting plates. The base plate is disposed at the bottom of the hydraulic valve assembly. The first threaded rod is fixedly installed at the bottom of the base plate. The two clamping plates are respectively disposed on both sides of the hydraulic valve assembly, and their bottoms are sleeved on both ends of the outer side of the first threaded rod. The two first nuts are respectively threaded to both ends of the outer side of the first threaded rod. The two limiting plates are respectively fixedly installed on one side of the two clamping plates, and one end is slidably connected to the inside of the side of the base plate.

8. The device for significantly reducing the hydraulic pipeline at the bridge-flying wellhead according to claim 7, characterized in that, Both of the aforementioned connecting components include a mounting frame, a slider, a telescopic rod, a locking screw, and a locking clamp. The mounting frame is fixedly installed on the bottom of the base plate, the slider is slidably connected to the inner side of the mounting frame, the telescopic rod is fixedly installed on both ends of the slider, the locking screw is threadedly connected to the top of the telescopic rod to restrict the free extension and retraction of the telescopic rod, and the locking clamp is installed on the moving end of the telescopic rod.

9. The device for significantly reducing the hydraulic pipeline at the bridge-flying wellhead according to claim 8, characterized in that, The two connecting components further include a slide groove, a second threaded rod, and a second nut. The slide groove is formed at the bottom of the mounting frame. The second threaded rod is fixedly installed at the bottom of the slider and slidably connected to the inner side of the slide groove. The second nut is threadedly connected to the outer side of the second threaded rod and abuts against the bottom of the mounting frame.

10. A method for significantly reducing the hydraulic pipeline at the bridge-flying wellhead, characterized in that, Includes the following steps: S1. Device Installation and Pipeline Connection: In chain well or multi-well operation sites, the integrated bridge-jet wellhead device for each wellhead is sealed and fixed to the top flange of the wellhead via a wellhead union transition flange, forming a rigid whole; the electrical control unit is fixedly installed on the crossbeam on the right side below the blowout preventer cage, and the hydraulic valve group is fixed on the mounting bracket on the left side below the blowout preventer cage. The connection between the hydraulic valve group and the blowout preventer cage is reinforced by clamping components and connecting components; a two-stage distributed wiring structure is adopted, with two main pipelines (P-port inlet pipeline and T-port return pipeline) leading from the central hydraulic pump source and connected to the hydraulic valve group at the wellhead respectively (each hydraulic valve group connects to two main pipelines). Then, through short rubber hoses with a length ≤2.5 meters, the integrated valve block of the hydraulic valve group is connected one by one to the hydraulic interfaces of each gate chamber, lower catcher, inserter, and plug valve of the blowout preventer; 432430 S2. System initialization and parameter configuration: Start the central hydraulic pump power source and each wellhead electrical control unit, and complete the system self-test through the human-machine interface of the main control center to confirm the sealing of hydraulic pipeline connections, the communication status between the electrical control unit and the PLC, and the normality of the position sensor signals of each functional component. Preset interlock logic parameters in the PLC, including the action sequence interlock between the plug and puller locking block and the locking disc, emergency shutdown trigger conditions, etc., to complete the setting of operation permissions and action response thresholds; S3. Command Issuance and Local Parsing: The operator selects the target wellhead and the required action (such as blowout preventer closing, lower catcher opening, etc.) on the human-machine interface of the main control center, triggering the control command; the command is transmitted to the electrical control box switch at the target wellhead through the fieldbus, and then forwarded to the PLC by the switch. After receiving the command, the PLC performs logical judgment, and after confirming that there are no interlock restrictions or abnormal working conditions, it generates the corresponding execution signal. S4. Hydraulic Drive and Action Execution: The PLC drive output module controls the corresponding solenoid directional valve in the hydraulic valve group to be energized and reversed. The high-pressure oil delivered by the central hydraulic pump enters the integrated valve block of the hydraulic valve group through the main pipeline, and is distributed to the oil inlet chamber of the hydraulic cylinder of the corresponding functional component through the internal preset flow channel, pushing the component to complete the specified action; during the action execution, the hydraulic cylinder return oil returns to the hydraulic pump source oil tank through the return oil flow channel of the integrated valve block and the main pipeline. S5. Status Feedback and System Reset: Position sensors on functional components collect action completion status signals in real time and feed them back to the local PLC. The PLC transmits the status information back to the main control center via the bus and displays the action completion result on the human-machine interface (e.g., "Wellhead Blowout Preventer 1 is closed"). After a single operation is completed, the operator can issue a reset command through the human-machine interface. The system controls each component to return to its initial state, and the hydraulic lines maintain standby pressure, waiting for the next operation command.

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