MODEL FOR DETECTION OF GAS LOSS BY LEAKAGE FROM THE GAS STORAGE RESERVOIR

Determination of the amount of gas loss by leakage from the underground gas storage reservoir developed in an oil depleted reservoir is presented in this paper. Reservoir fluid data obtained from an oil depleted reservoir located onshore oil field, Nigeria was used for the purpose. Two approaches were used which include; (1) pressure-volume relationship where pressure was varied for ten cases to establish new volume of gas (2) Microsoft Visual Basic computer program was also applied to obtain the change in content of the gas reservoir whenever the pressure changes. It was confirmed that for gas to leak off from the storage reservoir for any reason, the reservoir pressure must decline.