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An all-electrically driven downhole safety valve

一种安全阀、电驱动的技术，应用在井眼/井的阀装置、阀细节、阀装置等方向，能够解决安全阀下入深度受限、液压控制响应时间长、控制液要求高等问题，达到设备运行可靠、提高安全阀反应速度、改善工况条件的效果

Active Publication Date: 2020-04-17
CHINA UNIV OF PETROLEUM (EAST CHINA) +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The hydraulic control downhole safety valve uses hydraulic pressure as the driving force. Due to the limitations of the hydraulic pressure and the hydraulic pipeline itself, the hydraulic control downhole safety valve has the following problems: the opening of the valve plate is controlled by the hydraulic pipeline, and the depth of the safety valve is limited; The hydraulic requirements are high, and it needs to function in a wide range of temperature and pressure; the operation procedure is complicated, and the response time of hydraulic control is long

Method used

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  • An all-electrically driven downhole safety valve
  • An all-electrically driven downhole safety valve

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Embodiment Construction

[0019] specific implementation plan

[0020] like figure 1 and figure 2 As shown, the all-electrically driven downhole safety valve includes a downhole safety valve mechanism and a downhole safety valve control system 55 .

[0021] The downhole safety valve mechanism includes an electronic cabin module A, a transmission control module B, a motion conversion module C, a magnetic coupling and spring module D, and a valve module E.

[0022] Electronic cabin module A includes oil pipe connection upper joint 1, electrical connector 2, downhole electronic cabin 3, electronic cabin pressure cylinder 4 and electronic cabin wire hole 5. The oil pipe is connected to the upper joint 1 and is threaded with an electrical connector 2 for installing cables; the oil pipe is connected to the upper joint 1 and the pressure-bearing cylinder 4 of the electronic cabin through threads to form a sealed downhole electronic cabin 3 in an annular space, which is used to install the downhole comprehe...

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Abstract

The invention belongs to the field of petroleum engineering, and in particular relates to an all-electrically driven downhole safety valve. All-electric downhole safety valve, including downhole safety valve mechanism and downhole safety valve control system; among them, downhole safety valve mechanism, including electronic cabin module, transmission control module, motion conversion module, magnetic coupling and spring module and valve module; The safety valve control system includes a downhole integrated unit and an uphole integrated unit. The advantages of the present invention are: the all-electrically driven safety valve can greatly improve the response speed of the safety valve in emergency situations, and due to the structural characteristics of the all-electrically driven safety valve moving parts are installed in the sealed cabin, the working conditions of key structures are improved conditions, the operation of the equipment is more reliable, and the magnetic coupling device is used to isolate the pressure of the well fluid. The power source is electric, and the depth limit is small. At the same time, no hydraulic power unit and hydraulic pipeline are required, which reduces the system cost.

Description

technical field [0001] The invention belongs to the field of petroleum engineering, and in particular relates to an all-electrically driven downhole safety valve. Background technique [0002] Due to the particularity of offshore safety, once blowouts, oil spills, fires and other accidents occur, the consequences and secondary disasters are far greater than those of onshore oil fields. According to the American Petroleum Institute and domestic well control safety regulations, all oil and water wells in offshore oil fields must be equipped with safety control devices. The downhole safety valve is an important part of the downhole safety control system. It is a device that automatically shuts down the well when a major failure occurs at the wellhead. It has the function of protecting equipment, preventing production loss, protecting the environment, and preventing pollution caused by oil and gas injection. [0003] The downhole safety valve system used in domestic offshore oi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B34/06
CPCE21B34/066E21B2200/05E21B34/16F16K31/0668
Inventor 蔡宝平高春坦刘永红盛朝洋刘鹏李心成许宏奇陈艳东刘立兵纪仁杰刘增凯张日奎杨玉乾刘士堂魏新
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)