HORN, BRIAN W., Amoco Production Co., Denver CO;THOMAS J. WOODS, Ziff Energy Group Ltd., Houston, TX; andJOHN B. CURTIS, Colorado School of Mines, Golden CO
The current size range of producing gas fields in the basin shows a bimodal distribution centered around class 8 (0.5-3.1 Bcf) and class 12 (8-50 Bcf) field sizes. If an exponential distribution is assumed for the basin's ultimate recoverable resource, a distribution normalized on a class 12 field size yields an estimate of 20-24 Tcf as the remaining recoverable resource. This estimate is corroborated by analyzing historical production and completion trends for the basin and extrapolation of reserve additions over the next 10-20 years. These data suggest that 4-5 Tcf could be added to the existing reserve base within the next ten years and indicate significant potential of this previously unrecognized resource. Separation of the historical production data into discrete depth intervals yields a better understanding of current producing trends by formation, structural configuration and reservoir quality through time. Integration of these data into a regional geologic context allows a high-resolution prediction of the ultimate resource potential and forms the basis for evaluating areas of future exploration.
AAPG Search and Discovery Article #90936©1998 AAPG Southwest Section Meeting, Wichita Falls, Texas