萨中开发区“二三结合”开发实验数值模拟

应用数值模拟方法,分析大庆油田萨中开发区二、三类油层(萨Ⅱ10~萨Ⅲ10)"二三结合"开发实验井网部署,实验层段组合优化方案,注聚开发合理衔接时机,二、三类油层最佳组合开发模式等.结果表明:二、三类油层各自部署一套新井网,协调布井,同步钻井选择性射孔、同步水驱挖潜,协调平面和纵向注采关系,同期注入不同相对分子质量的聚合物进行三次采油能有效地挖潜油藏剩余油,提高采收率.

Numerical simulation of second tertiary combined development test in Sazhong development area

The second tertiary type oil layers(SaII10~SaIII10) second tertiary combined development test well pattern deployment are analyzed,the oil layers combination optimization schemes,polymer flooding logical join time and second tertiary type oil layers' optimal combination development type are tested,which provide theoretical basis for perfecting second tertiary type oil layers' plane and longitudinal injection production connections,extracting the second tertiary type oil layers' residual oil by reasonably making use of water flooding and polymer flooding.The result indicates that singly disposing one new well pattern,correspondingly disposing wells,drilling and selectively perforating at one time,extracting by water flooding at one time,coordinating second tertiary type oil layers' plane and longitudinal injection production connections,processing tertiary oil recovery by injecting polymer that is of different molecular weight at one time can effectively extract oil reservoir's residual oil,and achieve enhanced recovery.