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三元复合驱技术在我国已进入矿场试验阶段,为进一步提高原油采收率提供技术支持。在试验过程中一些非均质性比较严重的区块出现三元复合驱后期高渗透层吸水量大于水驱阶段吸水量,低渗透层吸水量少于水驱阶段的吸水剖面反转现象。利用物理实验,对影响原油采收率的各种因素进行总结,结合矿场试验对改善吸水剖面反转的相关技术进行研究,对提高三元复合驱驱油效果具有指导性意义。
Ternary compound flooding technology in our country has entered the pilot phase of the mine, to further enhance the recovery of crude oil to provide technical support. In some serious inhomogeneities during the experiment, the water absorption of high permeability layer in late stage of ASP flooding is greater than that of water flooding stage, and the water absorption of low permeability layer is less than that of water flooding stage. Based on the physical experiments, the various factors that affect the oil recovery rate are summarized. Based on the field tests, the related technologies to improve the water profile inversion are studied, which is instructive for improving the flooding effect of ASP flooding.