| wo new methods to predict gas reserves in abnormally pressured gas reservoirs are presented. The first method, which requires stabilized reservoir pressures, correlates early production data to the original gas in place. Reservoir simulation studies, material balance calculations and real production data indicate that abnormally pressured gas reservoirs exhibit a linear ;The second method, which mainly requires transient or unstabilized pressures, is an extension of an isochronal short time buildup pressure procedure. The influence of rock and water compressibility were included in this new approach. A... |
