关键词: 物质平衡, 异常高压, 气藏, 地质储量, 二项式方程, 水侵

Abstract: Aiming at the issue that it is difficult to predict geological reserves in the process of developing abnormally high pressure gas reservoir，by making use of the similarity of abnormally high pressure gas reservoir PD-GPD curve and dimentionaless IPR curve，the new model of quadratic material balance equation is presented to predict abnormally high pressure gas reservoir reserves.Taking Louisiana North Ossun “NS2B”，Louisiana Offshore Cajun，Gulf Coast Anderson “L” and South Louisiana Miocene abnormally high pressure gas reservoirs in the States as examples，the relative errors of geological reserves calculated with the new model are -2.88%，0.26%，1.57% and -2.81% respectively.By comparing with literature，it is found that the predicting precision is higher than any other ways，and the water influx can be more precisely predicted.The effectiveness，accuracy and reliability of the method are demonstrated，which provides a useful way for abnormally high pressure gas reservoir performance analysis.

Key words: material balance, abnormally high-pressure, gas reservoir, geological reserves, quadratic equation, water influx