METHOD FOR DETECTING LEAKAGE OF GAS FROM UNDERGROUND GAS STORAGE BY PRESSURE MONITORING AND UNDERGROUND GAS STORAGE SYSTEM

摘要

PURPOSE: A method for detecting gas leakage in an underground gas storage layer and an underground gas storage system are provided to deal with gas leakage in real time by transmitting the pressure value measured by a pressure sensor in real time. CONSTITUTION: A storage layer(10) is made of permeable rocks under the ground. A cover rock layer(20) is formed on the upper side of the storage layer and is made of impermeable rocks. An upper permeable layer(30) is made of permeable rocks on the upper side of a cover rock layer. A hollow casing(50) is fitted into the inner wall of a gas injection well from the surface to the storage layer. A plurality of gas injection holes are formed. A pressure sensor(60) is arranged with the same depth as the upper permeable layer and detects the upper permeable layer. The pressure of the upper permeable layer is detected.