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《Fault-Block Oil & Gas Field》 2018-03
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New understanding of source system of A oilfield in Bohai Sea area

LIU Xilin;LI Yunpeng;LIU Zongbin;LI Hongying;LIU Bin;Bohai Oilfield Research Institute,Tianjin Branch of CNOOC Ltd.;  
Based on the characteristics of heavy mineral, the analysis of palaeo-geomorphology, and the static analysis of the root mean square, this paper discusses the source system of Dongying Group in the Bohai A oilfield by combining the dynamic analysis of the characteristics of formation water chemistry. The results show that there are two sources in the northwest and southwest of Bohai A oilfield, the northern part of the oil field is mainly controlled by the Yanshanian ancient uplift, and the southern area is mainly controlled by the ancient Long Beach. Two braided river delta deposits developed in the A oilfield. In different sedimentary periods,there are three kinds of contact modes that do not mix, weakly meet and overlap. Innovative use of formation water chemistry characteristics to analyze the "dual sources" model by dynamic and static combination solves the growing contradictions of the development of oil field, which provides an effective guidance and reference for the future development.
【Fund】: 国家科技重大专项“渤海油田高效开发示范工程”(2016ZX05058)
【CateGory Index】: P618.13;TE53
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