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针对安塞油田高52长10特低渗透油藏平面非均质性强,油井见效差异大,递减较大的矛盾,基于油气渗流理论,分类研究了不同渗流单元启动压力及驱替压力分布特征,确定了极限注采井距及有效驱替范围,在此基础上通过流压控制、转注、加密等调整方式进行驱替压力系统的优化调整,有效提高低产区见效程度及单井产能,降低了区块递减。
According to the oil-gas seepage theory, the pressure and displacement pressure distribution characteristics of different seepage units are studied based on the contradiction between high 52-well and 10-well ultra-low permeability reservoirs in Ansai Oilfield. , Determine the limit injection and production well spacing and effective displacement range, on this basis through the flow control, transfer, encryption and other adjustments to optimize the pressure system of displacement, effectively improve the low yield area efficiency and single well productivity, Reduce the block decrement.