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大庆油田首次三元复合驱矿场试验研究表明,三元复合驱使区块综合含水由88.4%下降至63.7%,区块日产油量由见效前的37t上升到最高值88t,全区累积增油19625t,中心井比水驱提高采收率21.0%;大幅度节省了注水量,提高了开采速度;扩大了波及体积,改善了动用状况,提高了驱油效率。分析发现,三元复合驱注入压力上升幅度、视吸水指数下降幅度及比产液指数下降幅度都小于聚合物驱;三元复合体系与油层及流体有较好的配伍性,不会造成对油层的伤害。矿场试验展示了大庆油田开展三元复合驱的良好前景
The experimental study of the first ASP flooding in Daqing Oilfield shows that the ternary compound drive the comprehensive water cut of the block from 88.4% to 63.7%, and the daily oil production of the block rose from 37t before the effective date to the highest value of 88t The area accumulates 19625t of oil, and the center well increases the recovery rate by 21.0% compared with that of the waterflooding. The water injection amount is greatly saved and the mining speed is increased. The volume is expanded, the utilization condition is improved, and the displacement efficiency is improved. The results show that the pressure increase of ASP flooding is smaller than that of polymer flooding due to the decrease of water absorption index and the decrease of production index compared with that of polymer flooding. The ternary complex system has better compatibility with reservoir and fluid, s damage. Mine tests show the good prospects of the ASP flooding in Daqing Oilfield