A leakage emergency treatment system for salt cavern gas storage

Abstract

The invention discloses an emergency treatment system for leakage of a salt cavern gas storage, comprising three sets of sensor assemblies arranged on the inner wall of a casing from top to bottom at intervals, and an emergency valve arranged at the top of the salt cavern of the salt cavern gas storage system and central processor; each set of sensor components is composed of symmetrically arranged pressure sensors and gas flow rate sensors; emergency valve system includes switching power system, traction rope, ball valve, valve seat and elastic rope; valve seat and ball valve are matched with each other and placed in At the air outlet of the top of the salt cavern, the two ends of the elastic rope are respectively fixed on the ball valve and the inner wall of the casing, and the two ends of the traction rope are respectively fixed on the ball valve and the switch power system, and the switch power system retracts and unwinds the traction rope; The device controls the working status of each pressure sensor, each gas flow rate sensor and the switch power system; the system can be used as a common valve device, and can also detect leakage problems in time and carry out emergency treatment to minimize the leakage of salt cavern gas storage. losses caused.

Description

technical field [0001] The invention relates to the technical field of oil and gas resource development, in particular to a leakage emergency treatment system for a salt cavern gas storage. Background technique [0002] Salt cavern gas storage is a very important storage method in the field of oil and gas resource development. The completion string, cement stone and salt rock at the position of the casing shoe of the gas storage are subject to high ground pressure and alternating loads of gas injection and production. There is a risk of failure and damage of strength and sealing, and there is currently no effective means for emergency treatment. Once failure and damage occurs, natural gas will leak and cause secondary disasters such as explosion and fire. At the same time, once the casing string at this location fails and damages, all the natural gas in the salt cavern must be released and the overhaul operation will be carried out, which will seriously affect the working ef...

AI Technical Summary

Problems solved by technology

[0002] Salt cavern gas storage is a very important storage method in the field of oil and gas resource development. The completion pipe string, cement stone and salt rock at the casing shoe position of the gas storage are subject to high ground pressure and alternating loads of gas injection and production. There is a risk of strength and sealing failure damage, but there is currently no effective means for emergency treatment. Once failure occurs, natural gas leakage will cause secondary disasters such as explosions and fires.

At the same time, once the casing string at this position fails and is damaged, all the natural gas in the salt cavern must be released for overhaul, which seriously affects the working efficiency of the gas storage.

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