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华东分公司苏北油区以复杂小断块为主要特点,断层发育、非均质性强,多数区块已进入高含水开发期,最终采收率低,油藏潜力未得到有效发挥,老油田稳产难度越来越大。针对草舍油田草中区块戴一段中高渗高含水油藏开展了隔夹层与剩余油分布关系研究,并依靠水平井优化设计,部署实施水平井挖潜,改善了该油藏的开发效果,提高其采收率,对指导同类油藏进一步提高采收率和储量动用具有指导意义。
East China Branch North Jiangsu oilfield is characterized by complex small fault blocks, fault development, heterogeneity, most of the blocks have entered the high water cut development period, the ultimate recovery rate is low, the reservoir potential has not been effectively demonstrated, the old Oilfield production is more and more difficult. According to the research on the relationship between interbedded layers and residual oil distribution in the middle section of Caozhong Oilfield, the middle section of high permeability and high water cut reservoir, the horizontal well is deployed and potential tapping is deployed to improve the development effect of the reservoir and improve The recovery rate is of guiding significance in guiding similar reservoirs to further enhance oil recovery and reserves utilization.