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孔隙流体包含有油气成藏的重要信息。通过对独山子背斜沙湾组原油地球化学特征分析,推测油气主要来源于中下侏罗统湖相泥岩;根据地层水资料,在垂向上,沙湾组上部砂体连通性较下部好,在平面上,砂体展布主要受沉积相带控制。综合分析了独山子背斜油气成藏规律,来自于中下侏罗统的油气通过独山子断裂向上运移至沙湾组,被上部塔西河组泥岩封盖而聚集成藏,油气成藏主要受油源分布和砂体发育程度控制。还分析了开发区内剩余油可能的分布及其剩余油气资源潜力和勘探目标,提出了独山子背斜进一步油气勘探的方向。
Pore fluids contain important information on hydrocarbon accumulation. Based on the analysis of the geochemical characteristics of the Shawan Formation in Dushanzi anticline, it is inferred that the hydrocarbon mainly comes from the lower-middle Jurassic lacustrine mudstone. According to the formation water data, in the vertical direction, the upper sandbody connectivity of the Shawan Formation is better than that of the lower part, In plane, the sand body is mainly controlled by sedimentary facies. The hydrocarbon accumulation law of the Dushanzi anticline was comprehensively analyzed. The oil and gas from the Middle-Lower Jurassic migrated upward to the Shawan Formation through the Dushanzi fault, and was trapped by the mudstone of the upper Tahixian Formation to accumulate and accumulate. The main hydrocarbon accumulation By the distribution of oil and sand body development control. In addition, the possible distribution of remaining oil in the development zone and the potential of the remaining oil and gas resources and exploration targets are also analyzed. The direction of further oil and gas exploration in the Dushanzi anticline is also proposed.