多层水驱油实验在桥口油田开发中的应用

针对桥口油田非均质油藏地质特征,以室内实验为基础,对多层水驱油状况进行研究.结果表明,由于油层自身物性不同,多层系油藏层间动用程度差异较大.在开发实践中,通过合理地细分开发层系,改善注水结构和采取适当的工艺措施挖掘薄差层潜力,可以有效地改善层间吸水状况、扩大注入水波及体积,增加水驱动用储量,提高了油田的最终采收率.

Water driving oil test in heterogeneous reservoir and its application in Qiaokou oilfield

Because of the heterogeneity of the reservoir in Qiaokou oilfield, the result of multi layer water driving oil is studied by means of three one dimension experimental models made of the cores from four wells in the oilfield with different grade permeability. Some development measures, such as reasonably subdividing development series of strata, improving water entry profile, tapping the potential of poor thin layers, and so on, are put forward according to the experimental results, and they are applied to the development practice of the oilfield. The applied results show that the measures improve water absorbing difference among strata, enlarge the swept volume of injected water, and increase water flooding reserves and final recovery factor.