Naturally fractured tight gas reservoir detection optimization. Annual Report.211 Period of Performance: October 1, 1997-September 30, 1998

摘要

The work plan for October 1, 1997 to September 30, 1998 consisted of211u001einvestigation of a number of topical areas. These topical areas were reported in 211u001efour quarterly status reports, which were submitted to DOE earlier. These topical 211u001eareas are reviewed in this volume. The topical areas covered during the year 211u001ewere: (1) Development of preliminary tests of a production method for determining 211u001eareas of natural fracturing. Advanced Resources has demonstrated that such a 211u001erelationship exists in the southern Piceance basin tight gas play. Natural 211u001efracture clusters are genetically related to stress concentrations (also called 211u001estress perturbations) associated with local deformation such a faulting. The 211u001emechanical explanation of this phenomenon is that deformation generally initiates 211u001eat regions where the local stress field is elevated beyond the regional. (2) 211u001eRegional structural and geologic analysis of the Greater Green River Basin 211u001e(GGRB). Application of techniques developed and demonstrated during earlier 211u001ephases of the project for sweet-spot delineation were demonstrated in a 211u001erelatively new and underexplored play: tight gas from continuous-typeUpper 211u001eCretaceous reservoirs of the Greater Green River Basin (GGRB). The effort 211u001eincluded data acquisition/processing, base map generation, geophysical and remote 211u001esensing analysis and the integration of these data and analyses. (3) Examination 211u001eof the Table Rock field area in the northern Washakie Basin of the Greater Green