CN115637948A - Underwater well operation device - Google Patents

Abstract

The invention discloses an underwater well operation device, which comprises a shaft, a wellhead device, an operation cable, a lifting device, a communication cable and a driving module, wherein the shaft, the wellhead device, the operation cable, the lifting device, the communication cable and the driving module are positioned on the seabed; wherein the hoisting device comprises a working cable drum and/or a crawler-type tensioner and/or a hoisting pulley, and is used for tensioning the working cable, taking the working cable out of the shaft or putting the working cable down into the shaft; the driving module is connected with the operation cable roller or the crawler-type tensioner or the lifting pulley and is used for driving the operation cable to be pulled out and put down, and the driving module comprises an electric driving module or a hydraulic driving module; one end of the communication cable is connected with a control module, the other end of the communication cable is connected to a water platform control end, a land control end or a water surface signal transmitting device, and the control module at least comprises a working cable control module used for controlling the driving module; the operation cable is any one or combination of a rope, a steel cable, a cable and an optical fiber.

Description

Translated fromChinese

一种水下井作业装置An underwater well operation device

技术领域technical field

本发明涉及海洋油气开发技术领域，具体涉及一种水下井作业装置。The invention relates to the technical field of marine oil and gas development, in particular to an underwater well operation device.

背景技术Background technique

随着海洋油气的开采，油气井会出现大量的修井作业需求，采用水下生产系统开发海底资源虽然可以节约大量资金，但是水下井口的修理的难度缺大大增加；With the exploitation of offshore oil and gas, there will be a large number of workover needs for oil and gas wells. Although the use of underwater production systems to develop seabed resources can save a lot of money, the difficulty of repairing underwater wellheads has greatly increased;

而现有技术中，一般通过钻井船或者修井船实施修井，耗费巨大且容易造成污染；并且，由于修井船还需要采用隔水管柱隔离海水，需要进行高难度的水下井口对接作业，对接过程稍有不慎就会引起污染问题或者造成水下设备破损；此外，对于远海油气田或者处于保护区内的海洋油气田，频繁派出修井船与水下井口对接也是昂贵且高风险的作业活动。However, in the prior art, the workover is generally carried out by drilling ships or workover ships, which is costly and easy to cause pollution; moreover, since the workover ships also need to use riser strings to isolate seawater, it is necessary to carry out difficult underwater wellhead docking operations , a slight carelessness in the docking process will cause pollution problems or cause damage to underwater equipment; in addition, for offshore oil and gas fields or offshore oil and gas fields in protected areas, it is also an expensive and high-risk operation to frequently send workover ships to dock with underwater wellheads Activity.

因此，有必要提供一种水下井作业装置以解决上述问题。Therefore, it is necessary to provide an underwater well operating device to solve the above problems.

发明内容Contents of the invention

为实现上述目的，本发明提供如下技术方案：一种水下井作业装置，包括位于海底的井筒、井口装置、作业缆、起升装置、通讯缆以及驱动模块；其中，所述起升装置包括作业缆滚筒和/或履带式张紧器和/或起升滑轮，用于张紧作业缆或从井筒内取出作业缆或向井筒内下放作业缆；In order to achieve the above object, the present invention provides the following technical solutions: an underwater well operation device, including a wellbore located on the seabed, a wellhead device, an operation cable, a lifting device, a communication cable and a drive module; wherein, the lifting device includes an operation Cable drums and/or crawler tensioners and/or hoisting pulleys for tensioning the working cable or taking out the working cable from the wellbore or lowering the working cable into the wellbore;

所述驱动模块与所述作业缆滚筒连接或与所述履带式张紧器连接或与所述起升滑轮连接，用于驱动所述作业缆的起出和下放，且，所述驱动模块包括电力驱动模块或液压驱动模块；The driving module is connected with the working cable drum or with the crawler tensioner or with the lifting pulley for driving the lifting and lowering of the working cable, and the driving module includes Electric drive module or hydraulic drive module;

所述通讯缆的一端连接有控制模块，另一端连接至水上平台控制端、陆地控制端或水面信号发射装置，且，所述控制模块至少包括作业缆控制模块，用于控制所述驱动模块；One end of the communication cable is connected to a control module, and the other end is connected to the control terminal of the water platform, the control terminal of the land or the signal transmitting device on the water surface, and the control module includes at least a working cable control module for controlling the drive module;

所述作业缆为绳索、钢缆、电缆、光纤中的任意一种或组合。The working cable is any one or a combination of ropes, steel cables, cables and optical fibers.

进一步，作为优选，所述作业缆为电缆或铠装光纤，所述电缆或铠装光纤的下端设置有修井工具；Further, preferably, the working cable is a cable or an armored optical fiber, and the lower end of the cable or the armored optical fiber is provided with a workover tool;

所述控制模块还包括修井工具控制模块，所述作业缆分别与修井工具控制模块和修井工具通过电信号或光信号通讯连接；The control module also includes a workover tool control module, and the operation cable is respectively connected to the workover tool control module and the workover tool through electrical or optical signal communication;

需要说明的是，所述通讯连接包括电连接或光通讯连接，所述作业缆的两端分别与修井工具控制模块和修井工具电连接，用于起升和下放所述修井工具；所述修井工具控制模块能够向所述修井工具提供电能或与所述修井工具通讯连接。It should be noted that the communication connection includes an electrical connection or an optical communication connection, and the two ends of the operation cable are respectively electrically connected to the workover tool control module and the workover tool for lifting and lowering the workover tool; The workover tool control module can provide electrical power to the workover tool or be in communication with the workover tool.

进一步，作为优选，还包括隔离壳，所述隔离壳用于容置所述作业缆，以便将作业缆与水体隔开；Further, preferably, the isolation shell is also included, and the isolation shell is used for accommodating the working cable so as to separate the working cable from the water body;

所述隔离壳的一端通过作业缆出口端与井口装置相连，所述井筒包括套管，所述井口装置位于套管的上部；One end of the isolation shell is connected to the wellhead device through the outlet end of the working cable, the wellbore includes a casing, and the wellhead device is located on the upper part of the casing;

所述作业缆从井口装置侧面的旁通管道或井口装置上方进入井口装置中并进一步进入井筒的内部。The working cable enters the wellhead device from the bypass pipe on the side of the wellhead device or above the wellhead device and further enters the inside of the shaft.

进一步，作为优选，还包括作业缆滚筒和作业缆支架，其中，所述作业缆支架与所述井口装置固定连接；Further, preferably, it also includes a working cable drum and a working cable support, wherein the working cable support is fixedly connected to the wellhead device;

所述作业缆滚筒和所述作业缆滚筒支架间还设置有转动监测装置，用于检测作业缆下放的长度。A rotation monitoring device is also arranged between the working cable drum and the working cable drum support, which is used to detect the length of the working cable lowered.

进一步，作为优选，所述作业缆滚筒为电缆滚筒，所述作业缆滚筒支架为电缆滚筒支架，所述电缆滚筒和所述电缆滚筒支架间设置有旋转电连接件，所述旋转电连接件包括动端电连接接口和静端电连接接口，所述动端电连接接口设置于电缆滚筒一侧，所述静端电连接接口设置于电缆滚筒支架一侧；Further, as a preference, the working cable drum is a cable drum, the working cable drum bracket is a cable drum bracket, a rotating electrical connector is provided between the cable drum and the cable drum bracket, and the rotating electrical connector includes The electrical connection interface of the moving end and the electrical connection interface of the static end, the electrical connection interface of the moving end is arranged on the side of the cable drum, and the electrical connection interface of the static end is arranged on the side of the cable drum support;

所述作业缆的两端分别连接修井工具和动端电连接接口。The two ends of the working cable are respectively connected to the workover tool and the electrical connection interface of the moving end.

进一步，作为优选，还包括供电线路，所述供电线路的一端连接驱动模块，另一端连接陆地供电端或平台供电端，用于为驱动模块提供电能。Further, preferably, a power supply line is also included, one end of the power supply line is connected to the drive module, and the other end is connected to the land power supply terminal or the platform power supply terminal, for providing electric energy to the drive module.

进一步，作为优选，还包括至少一个设置于水上平台控制端、陆地控制端或水面信号发射装置的信号调制电路，以及至少一个设置于控制模块内部或控制模块一侧的信号解调电路；Further, preferably, it also includes at least one signal modulation circuit arranged at the control terminal of the water platform, the land control terminal or the signal transmitting device on the water surface, and at least one signal demodulation circuit arranged inside the control module or on one side of the control module;

其中，水上平台控制端、陆地控制端或水面信号发射装置能够通过所述信号调制电路将控制信号调制为含有交流分量的载波叠加至通讯缆中，所述信号解调电路能拾取通讯缆中的载波并解调出控制信号，以便于将所述控制信号传输至所述控制模块。Wherein, the water platform control terminal, the land control terminal or the water surface signal transmitting device can modulate the control signal into a carrier wave containing an AC component and superimpose it into the communication cable through the signal modulation circuit, and the signal demodulation circuit can pick up the signal in the communication cable. carrier and demodulates the control signal, so as to transmit the control signal to the control module.

进一步，作为优选，所述水上平台控制端、陆地控制端或水面信号发射装置能够通过通讯缆向作业缆控制模块发送控制指令，且，所述电缆能够向驱动模块提供电力，以便于所述作业缆控制模块控制驱动模块实现作业缆的起下。Further, as a preference, the control terminal of the water platform, the control terminal on land or the surface signal transmitting device can send control instructions to the operation cable control module through the communication cable, and the cable can provide power to the driving module, so as to facilitate the operation The cable control module controls the drive module to realize lifting and lowering of the working cable.

进一步，作为优选，还包括修井工具容置腔，所述修井工具容置腔用于容置所述修井工具，所述修井工具容置腔的两端分别连接水下井口装置和所述作业缆出口端。Further, as a preference, it also includes a workover tool accommodating chamber for accommodating the workover tool, and the two ends of the workover tool accommodating chamber are respectively connected to the underwater wellhead device and The outlet end of the working cable.

进一步，作为优选，所述供电线路为海底电缆，所述海底电缆设置于海底管道附近。Further, preferably, the power supply line is a submarine cable, and the submarine cable is arranged near the submarine pipeline.

与现有技术相比，本发明提供了一种水下井作业装置，具有以下有益效果：Compared with the prior art, the present invention provides an underwater well operation device, which has the following beneficial effects:

本发明中，对于无需起下油管的修井项目，可以通过在底层水下井口处常驻低成本的修井设备，并由海洋平台或者陆地遥控常驻水下井口处的修井设备进行作业，大幅度降低了作业成本，最大限度地减少了修井船的使用；而当本发明应用于分支井时，由于分支井的分支岔口处难以连接电缆或管线，因此在分支井内部实现开关滑套或者其他修井作业的最佳方式是采用钢丝绳作业，而本发明中采用常驻作业缆的方式可以大幅度降低分支井的建井及修井成本，可取得更加显著的成果。In the present invention, for workover projects that do not require the oil pipe to be pulled in and out, low-cost workover equipment can be permanently stationed at the bottom underwater wellhead, and the workover can be performed by the offshore platform or land remote control of the workover equipment permanently stationed at the underwater wellhead , which greatly reduces the operating cost and minimizes the use of workover ships; when the present invention is applied to branch wells, it is difficult to connect cables or pipelines at the branch forks of branch wells, so the switch sliding can be realized inside the branch wells. The best way to do casing or other workover operations is to use wire rope operations, but the method of using resident work cables in the present invention can greatly reduce the well construction and workover costs of branch wells, and can achieve more remarkable results.

附图说明Description of drawings

图1为一种水下井作业装置的结构示意图一；Fig. 1 is a structural schematic diagram 1 of an underwater well operation device;

图2为一种水下井作业装置的结构示意图二；Fig. 2 is a structural schematic diagram II of an underwater well operation device;

图中：A、水体；B、水底泥线；C、地层；1、井筒；2、井口装置；3、作业缆；4、作业缆滚筒；41、旋转电连接件；5、履带式张紧器；6、起升滑轮；7、通讯缆；8、控制模块；81、作业缆控制模块；82、修井工具控制模块；9、供电线路；10、隔离壳；101、作业缆出口端；11、套管；12、驱动模块；13、修井工具容置腔；14、修井工具。In the figure: A, water body; B, underwater mud line; C, formation; 1, shaft; 2, wellhead device; 3, operation cable; 4, operation cable drum; 41, rotating electrical connector; 5,crawler tensioning 6. Lifting pulley; 7. Communication cable; 8. Control module; 81. Operation cable control module; 82. Workover tool control module; 9. Power supply line; 10. Isolation shell; 101. Operation cable outlet end; 11. Casing; 12. Driving module; 13. Workover tool accommodation cavity; 14. Workover tool.

具体实施方式Detailed ways

请参阅图1～2，本发明提供了一种水下井作业装置，包括位于海底的井筒1、井口装置2、作业缆3、起升装置、通讯缆7以及驱动模块12；其中，所述井口装置2位于水底泥线B附近，所述井筒1主要位于水下的地层C中；Please refer to Figures 1-2, the present invention provides an underwater well operation device, including awellbore 1 located on the seabed, awellhead device 2, anoperation cable 3, a lifting device, acommunication cable 7 and adrive module 12; wherein, the wellhead Thedevice 2 is located near the water bottom mud line B, and thewellbore 1 is mainly located in the underwater formation C;

所述起升装置包括作业缆滚筒4和/或履带式张紧器5和/或起升滑轮6，用于张紧作业缆3或从井筒1内取出作业缆3或向井筒1内下放作业缆3，所述起升装置设置于井口装置2附近；The hoisting device includes a working cable drum 4 and/or acrawler tensioner 5 and/or a hoistingpulley 6 for tensioning theworking cable 3 or taking out theworking cable 3 from thewellbore 1 or lowering theworking cable 3 into thewellbore 1cable 3, the lifting device is arranged near thewellhead device 2;

所述驱动模块12与所述作业缆滚筒4连接或与所述履带式张紧器5连接或与所述起升滑轮6连接，用于驱动所述作业缆3的起出和下放，且，所述驱动模块12包括电力驱动模块或液压驱动模块；本实施例中，所述具体的驱动模块12包括驱动电机，所述驱动电机与所述作业缆滚筒的4的具体连接方式为齿轮传动连接或传动轴传动连接。Thedriving module 12 is connected to the working cable drum 4 or to thecrawler tensioner 5 or to the hoistingpulley 6 for driving the lifting and lowering of theworking cable 3 , and, Thedriving module 12 includes an electric driving module or a hydraulic driving module; in this embodiment, thespecific driving module 12 includes a driving motor, and the specific connection mode between the driving motor and the working cable drum 4 is a gear transmission connection Or drive shaft drive connection.

所述通讯缆7的一端连接有控制模块8，另一端连接至水上平台控制端、陆地控制端或水面信号发射装置，且，所述控制模块8至少包括作业缆控制模块81，用于控制所述驱动模块12；One end of thecommunication cable 7 is connected to a control module 8, and the other end is connected to the control terminal of the water platform, the land control terminal or the signal transmitting device on the water surface, and the control module 8 includes at least a workingcable control module 81 for controlling all Thedrive module 12;

所述作业缆3为绳索、钢缆、电缆、光纤中的任意一种或组合。Theworking cable 3 is any one or a combination of ropes, steel cables, cables, and optical fibers.

本实施例中，所述作业缆3为电缆或铠装光纤，所述电缆或铠装光纤的下端设置有修井工具14；In this embodiment, theworking cable 3 is a cable or armored optical fiber, and aworkover tool 14 is arranged at the lower end of the cable or armored optical fiber;

所述控制模块8还包括修井工具控制模块82，所述作业缆3分别与修井工具控制模块82和修井工具14通过电信号或光信号通讯连接；The control module 8 also includes a workovertool control module 82, and theoperation cable 3 is respectively connected to the workovertool control module 82 and theworkover tool 14 through electrical or optical signal communication;

所述通讯连接包括电连接或光通讯连接。The communication connection includes an electrical connection or an optical communication connection.

为了方便操作并降低故障率，所述作业缆控制模块81和所述修井工具控制模块82集成在一个控制箱内或集成于同一块电路。In order to facilitate operation and reduce failure rate, the operationcable control module 81 and the workovertool control module 82 are integrated in a control box or in the same circuit.

本实施例中，还包括隔离壳10，所述隔离壳10用于容置所述作业缆3，以便将作业缆3与水体隔开；In this embodiment, anisolation case 10 is also included, and theisolation case 10 is used to accommodate theoperation cable 3 so as to separate theoperation cable 3 from the water body;

所述隔离壳10的一端通过作业缆出口端101与井口装置2相连，所述井筒1包括套管11，所述井口装置2位于套管11的上部；所述作业缆3从井口装置2侧面的旁通管道或井口装置2上方进入井口装置中并进一步进入井筒1的内部。One end of theisolation shell 10 is connected to thewellhead device 2 through theoutlet end 101 of the working cable, thewellbore 1 includes acasing 11, and thewellhead device 2 is located on the upper part of thecasing 11; The bypass pipe orwellhead 2 above enters the wellhead and further enters the interior of thewellbore 1 .

需要解释的是，井口装置为水下套管头、水下采油树或水下防喷装置；It should be explained that the wellhead device is a subsea casing head, a subsea Christmas tree or a subsea blowout preventer;

另外，隔离壳的作用在于防止海水侵蚀作业缆，同时也可以防止作业缆上的污染物流入水体；In addition, the function of the isolation shell is to prevent the seawater from eroding the working cable, and at the same time prevent the pollutants on the working cable from flowing into the water body;

所述隔离壳包括硬质隔离壳和软质材料制成的软体隔离壳。The insulating shell includes a hard insulating shell and a soft insulating shell made of soft materials.

本实施例中，还包括作业缆滚筒4和作业缆支架，其中，所述作业缆支架与所述井口装置2固定连接；In this embodiment, an operation cable drum 4 and an operation cable support are also included, wherein the operation cable support is fixedly connected to thewellhead device 2;

所述作业缆滚筒4和所述作业缆滚筒支架间还设置有转动监测装置，用于检测作业缆下放的长度。A rotation monitoring device is also arranged between the working cable drum 4 and the working cable drum support, which is used to detect the length of the working cable lowered.

所述作业缆支架与所述井口装置固定连接的好处在于能够大幅度降低水下环境的作业难度并降低成本。The advantage of the fixed connection between the working cable support and the wellhead device is that it can greatly reduce the difficulty of operation in the underwater environment and reduce the cost.

本实施例中，所述作业缆支架固定设置于水下采油树上，随水下采油树一同下入海底并座于水下井口。In this embodiment, the working cable support is fixedly arranged on the underwater Christmas tree, and is lowered into the seabed together with the underwater Christmas tree and seated on the underwater wellhead.

作为较佳的实施例，所述作业缆滚筒4为电缆滚筒，所述作业缆滚筒支架为电缆滚筒支架，所述电缆滚筒和所述电缆滚筒支架间设置有旋转电连接件41，所述旋转电连接件包括动端电连接接口和静端电连接接口，所述动端电连接接口设置于电缆滚筒一侧，所述静端电连接接口设置于电缆滚筒支架一侧；As a preferred embodiment, the working cable drum 4 is a cable drum, the working cable drum bracket is a cable drum bracket, a rotatingelectrical connector 41 is arranged between the cable drum and the cable drum bracket, and the rotating The electrical connector includes a moving-end electrical connection interface and a static-end electrical connection interface, the moving-end electrical connection interface is arranged on one side of the cable drum, and the static-end electrical connection interface is arranged on one side of the cable drum support;

所述作业缆的两端分别连接修井工具和动端电连接接口。The two ends of the working cable are respectively connected to the workover tool and the electrical connection interface of the moving end.

另外，所述动端电连接接口和静端电连接接口通过滑环实现电连接。In addition, the electrical connection interface of the moving end and the electrical connection interface of the static end are electrically connected through a slip ring.

本实施例中，还包括供电线路9，所述供电线路9的一端连接驱动模块12，另一端连接陆地供电端或平台供电端，用于为驱动模块12提供电能。In this embodiment, apower supply line 9 is also included. One end of thepower supply line 9 is connected to thedrive module 12 , and the other end is connected to a land power supply terminal or a platform power supply terminal for providing power to thedrive module 12 .

本实施例中，还包括至少一个设置于水上平台控制端、陆地控制端或水面信号发射装置的信号调制电路，以及至少一个设置于控制模块8内部或控制模块8一侧的信号解调电路；In this embodiment, it also includes at least one signal modulation circuit arranged on the water platform control terminal, the land control terminal or the water surface signal transmitting device, and at least one signal demodulation circuit arranged inside the control module 8 or on the side of the control module 8;

其中，水上平台控制端、陆地控制端或水面信号发射装置能够通过所述信号调制电路将控制信号调制为含有交流分量的载波叠加至通讯缆7中，所述信号解调电路能拾取通讯缆7中的载波并解调出控制信号，以便于将所述控制信号传输至所述控制模块8；Wherein, the water platform control terminal, the land control terminal or the water surface signal transmitting device can modulate the control signal into a carrier wave containing an AC component and superimpose it on thecommunication cable 7 through the signal modulation circuit, and the signal demodulation circuit can pick up thecommunication cable 7 and demodulating the control signal so as to transmit the control signal to the control module 8;

其作用和优势在于可以减少海底电缆的铺设量，通过直流输电的方式输送电能，通过在直流电上加载交流分量的方式实现控制信号的传递以及数据传输。Its role and advantage are that it can reduce the laying amount of submarine cables, transmit electric energy through DC transmission, and realize the transmission of control signals and data transmission by loading AC components on DC.

本实施例中，所述水上平台控制端、陆地控制端或水面信号发射装置能够通过通讯缆7向作业缆控制模块81发送控制指令，且，所述电缆9能够向驱动模块12提供电力，以便于所述作业缆控制模块81控制驱动模块12实现作业缆的起下。In this embodiment, the above-water platform control terminal, the land control terminal or the surface signal transmitting device can send control instructions to the operationcable control module 81 through thecommunication cable 7, and thecable 9 can provide power to thedrive module 12, so that The operatingcable control module 81 controls the drivingmodule 12 to realize lifting and lowering of the operating cable.

本实施例中，还包括修井工具容置腔13，所述修井工具容置腔13用于容置所述修井工具14，所述修井工具容置腔13的两端分别连接水下井口装置2和所述作业缆出口端101。In this embodiment, it also includes a workovertool accommodating chamber 13 for accommodating theworkover tool 14, and the two ends of the workovertool accommodating chamber 13 are respectively connected to water Thelower wellhead device 2 and theoutlet end 101 of the working cable.

作为较佳的实施例，所述供电线路9为海底电缆，所述海底电缆设置于海底管道附近。As a preferred embodiment, thepower supply line 9 is a submarine cable, and the submarine cable is arranged near the submarine pipeline.

本发明中，对于无需起下油管的修井项目，可以通过在底层水下井口处常驻低成本的修井设备，并由海洋平台或者陆地遥控常驻水下井口处的修井设备进行作业，大幅度降低了作业成本，最大限度地减少了修井船的使用；而当本发明应用于分支井时，由于分支井的分支岔口处难以连接电缆或管线，因此在分支井内部实现开关滑套或者其他修井作业的最佳方式是采用钢丝绳作业，而本发明中采用常驻作业缆的方式可以大幅度降低分支井的建井及修井成本，可取得更加显著的成果。In the present invention, for workover projects that do not require the oil pipe to be pulled in and out, low-cost workover equipment can be permanently stationed at the bottom underwater wellhead, and the workover can be performed by the offshore platform or land remote control of the workover equipment permanently stationed at the underwater wellhead , which greatly reduces the operating cost and minimizes the use of workover ships; when the present invention is applied to branch wells, it is difficult to connect cables or pipelines at the branch forks of branch wells, so the switch sliding can be realized inside the branch wells. The best way to do casing or other workover operations is to use wire rope operations, but the method of using resident work cables in the present invention can greatly reduce the well construction and workover costs of branch wells, and can achieve more remarkable results.

以上所述的，仅为本发明较佳的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，根据本发明的技术方案及其发明构思加以等同替换或改变，都应涵盖在本发明的保护范围之内。The above is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto, any person familiar with the technical field within the technical scope disclosed in the present invention, according to the technology of the present invention Any equivalent replacement or change of the scheme and its inventive concepts shall fall within the protection scope of the present invention.

Claims (10)

1. An underwater well operation device is characterized by comprising a shaft (1) positioned on the seabed, a wellhead device (2), an operation cable (3), a lifting device, a communication cable (7) and a driving module (12); wherein the hoisting device comprises a working cable drum (4) and/or a crawler-type tensioner (5) and/or a hoisting pulley (6) for tensioning the working cable (3) or for removing the working cable (3) from the shaft (1) or for lowering the working cable (3) into the shaft (1);

the driving module (12) is connected with the operation cable roller (4) or the crawler-type tensioner (5) or the lifting pulley (6) and is used for driving the lifting and the lowering of the operation cable (3), and the driving module (12) comprises an electric driving module or a hydraulic driving module;

one end of the communication cable (7) is connected with a control module (8), the other end of the communication cable is connected to a control end of an above-water platform, a land control end or a water surface signal transmitting device, and the control module (8) at least comprises an operation cable control module (81) for controlling the driving module (12);

the operation cable (3) is any one or combination of a rope, a composite material cable, a steel cable, a cable and an optical fiber.

2. A subsea well operation device according to claim 1, characterized in that the operation cable (3) is a cable or an armored optical fibre, the lower end of which is provided with a workover tool (14);

the control module (8) further comprises a workover tool control module (82), and the operation cable (3) is in communication connection with the workover tool control module (82) and a workover tool (14) through electric signals or optical signals;

the communication connection comprises an electrical connection or an optical communication connection.

3. A subsea well operation device according to claim 1, further comprising a shielding shell (10), said shielding shell 10 being adapted to house the operation line (3) so as to shield the operation line (3) from the body of water;

one end of the isolation shell (10) is connected with a wellhead device (2) through an operating cable outlet end (101), the shaft (1) comprises a casing (11), and the wellhead device (2) is positioned at the upper part of the casing (11);

the service cable (3) enters the wellhead device from a bypass pipeline on the side of the wellhead device (2) or above the wellhead device (2) and further enters the inside of the shaft (1).

4. A subsea well-operation device according to claim 1 or 3, further comprising a wireline drum (4) and a wireline carrier, wherein the wireline carrier is fixedly connected to the wellhead device (2);

and a rotation monitoring device is also arranged between the operation cable roller (4) and the operation cable roller bracket and is used for detecting the lowering length of the operation cable.

5. A subsea well operation device according to claim 4, characterized in that the operation cable drum (4) is a cable drum, the operation cable drum support is a cable drum support, a rotary electrical connector (41) is arranged between the cable drum and the cable drum support, the rotary electrical connector comprises a moving end electrical connection interface and a static end electrical connection interface, the moving end electrical connection interface is arranged at one side of the cable drum, and the static end electrical connection interface is arranged at one side of the cable drum support;

and two ends of the operation cable are respectively connected with the workover tool and the movable end electric connection interface.

6. A subsea well operation device according to claim 1, characterized by an electrical supply line (9), said electrical supply line (9) being connected at one end to the driving module (12) and at the other end to the land or platform power supply for providing electrical power to the driving module (12).

7. A subsea well operation device according to claim 1, further comprising at least one signal modulation circuit disposed at the topside control site, at the land control site or at the surface signal transmitter, and at least one signal demodulation circuit disposed inside the control module (8) or at one side of the control module (8);

wherein, platform control end on water, land control end or surface of water signal emission device can pass through signal modulation circuit superposes the carrier that control signal modulation for containing the alternating current component to communication cable (7) in, signal demodulation circuit can pick up the carrier in communication cable (7) and demodulate control signal, so that with control signal transmission extremely control module (8).

8. A subsea well operation device according to claim 6, in which the topside control site, the land control site or the surface signal transmitter is capable of sending control commands to the umbilical control module (81) via the communication cable (7), and the cable (9) is capable of providing power to the drive module (12) so that the umbilical control module (81) can control the drive module (12) to effect umbilical tripping.

9. A subsea well operation device according to claim 3, further comprising a workover tool receiving chamber (13), said workover tool receiving chamber (13) being adapted to receive said workover tool (14), both ends of said workover tool receiving chamber (13) being connected to said subsea wellhead (2) and said umbilical outlet end (101), respectively.

10. A subsea well-operation device according to claim 6, characterized in that the power supply line (9) is a submarine cable, which is arranged in the vicinity of a submarine pipeline.

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