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萨中开发区进入特高含水开发阶段,剩余油呈现“整体分散、局部相对富集”的分布格局,应用补孔措施能够在现有的经济条件下,有效开采没有加密条件下注采不完善部位剩余油。北一二排东上返区块进入后续水驱阶段,确立“控液换油”目标,运用精细地质研究成果,精心选井、选层,实施综合措施,补开PI1-7单元为主的坨状或窄条带状河道砂,提高油层动用程度,充分挖掘剩余油潜力。为探索后续水驱特高含水期,进一步提高区块采收率提供可借鉴经验。
Sazhong Development Zone into the development stage of ultra-high water-cut, the remaining oil showed “overall dispersion, the local relative enrichment ” distribution pattern, the application of fill-hole measures to the existing economic conditions, the effective exploitation of mining conditions without encryption Imperfect parts of the remaining oil. North 12th row east up the block into the follow-up waterflood stage, establish “control liquid change oil ” goal, using the fine geological research results, carefully selected wells, the election layer, the implementation of comprehensive measures to make up PI1-7 unit The main lump or narrow strip of channel sand, increase oil utilization, and fully tap the remaining oil potential. In order to explore the follow-up water-flooding period, to further improve the recovery rate of the block can provide reference for experience.