关键词: 油层, 成藏, 增储, 划定

Abstract: At present, the main block of Changyuan in Daqing has entered the late period of development, with the characteristics of high water cut and high extraction degree. The remaining oil is highly dispersed, and the difficulty of adjusting the potential of tapping the potential is gradually increasing. In order to delineate the P reservoir area of the south west slope of A zone, the reservoir structure, reservoir and oil and water distribution are studied by means of logging seismic joint tectonic interpretation, reservoir prediction and oil and water identification. The research shows that the horizontal surface distribution of P oil reservoir is controlled by structural units, the type of vertical reservoir is controlled by the characteristics of sedimentary evolution, oil enrichment is controlled by fault sealing, and oil and gas accumulation is difficult to be determined by the relationship between fracture and sand body configuration. According to the research results, the potential area of I, II and III is delineated in the P oil layer of the west slope, and the total geological reserves are obtained.

Key words: Oil reservoir, Accumulation, Storage, Delimit