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孤岛油田西区已进入特高含水期 (平均含水 93 .9% ) ,采出程度 2 3 .97% ,目前开发效果较差。为进一步提高其采收率 ,在数值模拟和室内驱替试验的基础上 ,进行了三元复合驱现场试验 ,采取了层系调整、减少上层系对试验区的影响、保持合理地层能量和及时放大生产压差等措施。结果表现出比单一聚合物驱更好的增油效果 ,同时见聚率较低 ,高渗层得到有效封堵 ,吸水剖面得到改善 ,开发效果明显变好 ,取得了良好的经济效益。
Gudao Oilfield West has entered the ultra-high water cut period (average 93.9% water), mining degree of 23.97%, the current development of less effective. In order to further improve the recovery rate, based on the numerical simulation and indoor displacement test, the field experiment of ASP flooding was carried out, and the stratification adjustment was adopted to reduce the impact of the upper strata on the experimental area, maintain the reasonable formation energy and timely Enlarge production pressure and other measures. The results show a better performance than a single polymer flooding oil, while see the low aggregation rate, high permeability layer is effectively blocked, water absorption profile is improved, the development effect was significantly better, and achieved good economic benefits.