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中文摘要：
海上低渗透油藏非均质性较强,进入特高含水期剩余油分布复杂.目前海上油藏布井主要依据油藏储量丰度或单储系数,该方法考虑因素较少,因此提出了可以综合表征油藏压力、可动油饱和度、油藏有效厚度、孔隙度、渗透率、边界距离和构造位置对生产井产能影响的改进型生产潜力,并利用均质油藏说明了其计算方法.针对珠江口盆地某特高含水期的低渗透油藏,应用改进型生产潜力评价了剩余油潜力区.在此基础上,提出了一套适用于海上低渗透油藏特高含水期的“自下而上”式布井原则,为该类油藏开发提供借鉴.
英文摘要：
Remaining oil distribution is complicated in offshore low permeability reservoirs especially at extrahigh water cut stage because of the reservoir＇ s great heterogeneity. At present well placement mainly depends on reserves abundance or unit reserve factor, which takes few factors into consideration. Therefore modified production potential is put forward which can comprehensively represent reservoir pressure, mobile oil saturation, net thick- ness, porosity, permeability, distance from the boundary, and structure position effect on productivity. Uniform reservoir is used to illustrate its way of computing. Aiming at a low permeability reservoir at extra-high water cut stage in Pearl River Mouth Basin, the modified production potential is used to evaluate the remaining oil potential areas. Based on this, a ＂from bottom to up＂ well placement principle is proposed for offshore low permeability reservoirs at extra-high water cut stage, which is from remaining oil area to branches to wellhead. It provides reference to the same kind of reservoir development.
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