Research Of Expansion Potential Outside The Zhaozhou Eastern Putaohua Oil Reservoir

ZhaoZhou oil field is located in the south of SanZhao depression, central depressions inthe Songliao Basin. Since invest in developing, carried out geological research, but itsforming rules and external expansion potential has not been systematic research. In this paper,sequence stratigraphy, reservoir sedimentology and reservoir dynamics as a theoreticalguidance, the Putaohua oil reservoir of ZhaoZhou oil field as the object of study,systematically carried out the research to the region forming conditions.Through the fine division and correlation to the formation, select the backbone well to dothe profile of the closed skeleton, and on closed skeleton profile with the three-diensionalseismic data to determine the layer framework(faults, breakpoint, and stratum thicknesschanges, ect), under the guidance of this, to contrast the well to well by the above methods,first contrast to the standard layer, marker bed and closed on the skeleton profile, thencontrast the sand group to closed, next contrast to the small layer, the time unit to the closed.To the well outside the regional skeleton closed profile, adopt“plot area close correlationmethod” that under the control of region closed skeleton profile. And through the regionmicrofacies study, to determine the area is the river control in shallow water delta frontdeposits formed under the control of provenance in the northern SongLiao Basin, the maintype of microfacies is a large number of intensive, continuous underwater distributary channeland a large area of contiguous sheet sand microfacies, and estuary dam and other typemicrophase are not development. Putaohua reservoir vertically develop the sedimentaryevolution sequence of the first fast water back, then slow the water into, coming to thatunderwater distributary channel sand body in the biggest issue of the water back andcontiguous sheet sand in the period of water into are the main reservoir unit of oil and gas. Onthe basis of the deposition characteristics of the above reservoir and sand body distributionlaw research, combination of typical reservoir anatomy, the effective range of source rocks,oil transporting conditions and reservoir evaluation to accumulation elements match ananlysis,draw a conclusion that the matching of oil source fault with the quality reservoir in thereservoir of ancient tectonic context is the key to control hydrocarbon accumulation.Ultimately portrayed Zhaozhou oil field eastern three kinds of expansion border region underthe model guidance, providing guidance for exploration and development of the region.