Full electric driving downhole safety valve

Abstract

The invention belongs to the field of petroleum engineering, and specifically relates to a full electric driving downhole safety valve. The full electric driving downhole safety valve includes a downhole safety valve mechanism and a down safety valve control system, wherein the downhole safety valve mechanism includes an electronics bay module, a transmission control module, a motion conversion module, a magnetic coupling and spring module, and a valve module; and the downhole safety valve control module includes a downhole comprehensive unit and an on-hole comprehensive unit. The full electric driving downhole safety valve has the advantages that the full electric driving downhole safety valve can greatly improve the response speed of the safety valve in the emergency situations, due to the structural characteristics that moving parts of the electric driven safety valve are mounted in a sealing cabin, the working conditions of the key structure are improved, operation of equipment ismore reliable, a magnetic coupling device is adopted, well hydraulic pressure is isolated, a power source is electric power, the deep limit is small, a hydraulic power unit and a hydraulic pipeline are not needed, and the system cost is lowered.

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...

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

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