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巴什托普油田生屑灰岩油藏油水界面呈东高西低倾斜分布,运用非稳态油气成藏理论分析,认为倾斜油水界面的形成是由于喜马拉雅晚期新构造运动破坏了前期的古油藏,同时构造高点向东偏移,油藏由西向东重新运移调整的结果。通过钻井及试采资料分析,群古1井附近存在的物性遮挡带将油藏分为东西两部分,西部为有利成藏区,是下步重点勘探开发区域,东部为油气散逸区,难以聚集成藏。
The oil-water interface of the Bashi Top oil-shale bioclastic limestone reservoir shows an east-west high and low-tilt distribution. By using the theory of unsteady hydrocarbon accumulation, it is considered that the formation of the tilted oil-water interface is due to the rupture of the previous ancient oil by the neotectonic movement in the late Himalayas Tibet, at the same time, construct the result that the high point is offset to the east and the reservoir is re-transported from west to east. According to the analysis of drilling and trial mining data, the physical shielding zone existing in the vicinity of the Well Gugu1 divides the reservoir into two parts: East and West, the favorable reservoir area in the west, the key exploration and development area in the next step, and the easterly gas-saturated area in the east, Accumulation.