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克拉玛依砾岩油田有些油层含高粘度原油,并有一定的含油面积,储层非均质程度高,注水开发中粘性指状突进显著,水驱效果差。因此提出了在中含水期泡沫驱油试验方案。通过室内选剂、配方优选、管式模型、平面模拟及矿场试验,从试验到观察结束,历时16年(室内试验5年、矿场泡沫段塞4年、清水驱替7年)。结果表明:烷基苯磺酸钠是一种较好的生泡剂,用以生泡驱油,可以大幅度降低中含水期的油田含水率,提高采油速度,对于水驱最终采收率为26～28％的油田,可以提高采收率7～8％,具有良好的经济效果。
Some reservoirs in Karamay conglomerate oil field contain high viscosity crude oil, which has a certain oil area, high reservoir heterogeneity, prominent sticky finger in water flooding development and poor water flooding performance. Therefore, the proposed water flooding foam test program. Through indoor selection, formulation optimization, tubular model, plane simulation and field test, the experiment lasted 16 years from the end of the experiment (five years in laboratory experiment, 4 years in sluice foam and 7 years in clear water). The results show that sodium alkylbenzenesulfonate is a better foaming agent, which can be used to generate foam and displace oil, which can greatly reduce the moisture content of oilfield in medium water cut period and increase the oil recovery rate. The ultimate recovery of waterflooding is 26 ~ 28% of the oil field, oil recovery can improve 7 to 8%, with good economic results.