Abstract:          After many years of waterflooding, PⅠ2-3 reservoirs has been in the stage of extrahigh water cut, by 2016, comprehensive water cut in the study area is 92.5%.Based on wateredout log interpretation results and sealed coring data, application of numerical The remaining oil distribution law was studied by numerical simulation method, The results show that the comprehensive recovery degree of the study area is 43.02%, and the residual oil is mainly distributed in the channel sand, which still has the potential of polymer flooding. Through the field test data analysis and laboratory experiments show that the injection of the earlier opportunity, the more favorable and enhanced oil recovery. Finally, on the basis of geological modeling and numerical simulation, the study of well pattern adaptability is carried out and the reasonable injection-production well spacing is determined.

Key words: Extra-highwatercut, Remainlingoildistribution, reservoirnumericalsimulation, Wellpatternadaptability

摘要：          葡Ⅰ2-3油层经过多年注水开发目前已处于特高含水开采阶段,截止2016年,研究区综合含水率为92.5%。在水淹测井解释成果、密闭取心资料的基础上,应用数值模拟法对剩余油分布规律进行了研究。结果表明,研究区综合采出程度为43.02%,剩余油主要分布在河道砂内,仍具有较大的聚驱潜力。通过矿场试验数据分析和室内实验研究表明,注聚时机越早,越有利于提高采收率。最后在地质建模和数值模拟的基础上,开展了井网适应性研究(注采井距、经济效益评价),确定了合理的注采井距。

关键词: 特高含水期, 剩余油分布, 数值模拟, 井网适应性