Reservoir-forming mechanism and models for sandstone lenticular-body oil/gas reservoir
UN Jing-ye, et al. ( Exploration and Development Research Institute of Daqing Oilfielf] Company Ltd. , Daqing 163712, China)
The oil/gas reservoir of sandstone lenticular-body is a type of lithologic reservoir, so far its reservoir-forming mechanism is a problem that has no eomplete solution, even there are a lot of disagreements in recognition. Based on deep theory research on simulated experimental result in formation mechanism lab of lithologic hydrocarbon reservoir, applying the new theory of migration of oil/gas, and combining exploration practice, this paper discusses the lithologic hydrocarbon reservoir of sandstone lenticular-body. According to the contact relationship of sand-shale, the seven kinds of reservoir-forming models of lithologic hydrocarbon reservoir are constructed, the four kinds of models in accordance with advan-lageous degree are classified, (he phenomenon that not all sandstone lenticular-body can form reservoir in shale (oil source rock) is explained, which is found in the process of exploration. Further more, a new concept that can seek "small-scale oil reservoir groups" is put forward, the good achievement is obtained during the application in Yingtai region, Bayanchagan region, etc.
【CateGory Index】： TE122.322