Compound electro-hydraulic downhole control system of deepwater test tubular column safety device

Abstract

The invention discloses a compound electro-hydraulic downhole control system of a deepwater test tubular column safety device. The compound electro-hydraulic downhole control system comprises a groundplatform, an umbilical cable, an underwater energy accumulator group, a downhole control module and a hydraulic actuator. Through sensor devices installed on the interface circuit and control circuitof the hydraulic actuator, environmental parameter data such as the pressure are collected, the ground platform analyzes and compares the collected data with a database, and then sends out control command, the control command is transmitted to the downhole control module through the umbilical cable, and the hydraulic actuator is controlled. According to the compound electro-hydraulic downhole control system, two modes of electro-hydraulic control and pilot valve pressure control are achieved, the reliability of the deepwater test tubular column safety device is effectively improved, the characteristics of fast response, real-time monitoring, high flexibility and the like are achieved, and the deepwater test safety operation can be better ensured.

Description

technical field [0001] The invention relates to a downhole control system for a safety device of a deep-water testing pipe string, which belongs to the field of offshore oil and gas development. [0002] technical background [0003] The deepwater test string safety device is applied to deep sea oil and gas resources development and test operations, which can realize real-time collection of underwater environmental parameters and perform accurate risk assessment on test operations. Timely release of the safety device of the deep-water test string can realize the separation of the floating platform from the wellhead in case of tides, tides, tsunamis, etc., so that the floating platform can be evacuated quickly. Blocking can minimize environmental pollution, ensure personnel safety, and reduce operational risks. The composite electro-hydraulic downhole control system of deepwater test string safety device is applied to this set of devices, which is the downhole part of the ent...

AI Technical Summary

Problems solved by technology

[0009] The technical problem to be solved by the present invention is to propose a downhole control system with fast response speed, stable action, long controllable distance, high reliability and visual operation, etc. Features: It can realize the emergency release and reconnection of the test string under different operating conditions, and can reflect the state of the underwater actuator and various environmental parameters to the ground control platform

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