GEOLOGIC CONTROLS OF DEEP BASIN GAS ACCUMULATIONS IN THE LOWER PERMIAN SEQUENCE OF THE ORDOS BASIN
鄂尔多斯盆地下二叠统深盆气藏形成的地质条件

Deep basin gas accumulations, a type of unconventional gas accumulation, are typically pervasive accumulations. Some of the more important distinguishing characteristics of deep basin gas accumulations include abnormal pressures, low-permeability reservoirs,and a general absence of downdip of water. The Ordos basin is one of the direct types of deep basin gas accumulations. The deltaic deposit constitutes the dominant reservoir in the deep basin. The stratigraphic interval containing the deep basin gas accu...