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利853块位于利津洼陷北部郑南斜坡带上,主要含油层是沙三、沙四段砂砾岩体,属于低孔、低渗储层;该块2003年投入开发,目前采油速度仅为0.18%,采出程度为3.08%,针对油藏“双低”现状,开展综合地质和提高采收率技术研究,优选适合该油藏的开发方式,采用细分层系、加密井网、仿水平井小井距开发,提高低渗透油藏的开发效果,对同类油藏的开发具有重要的指导意义。
Lee 853 is located in the northern slope of the Zhengnan slope in the Lijin Sag. The main oil-bearing formation is the sand-conglomerate body of Es3 and Sha4, belonging to low-porosity and low-permeability reservoirs. The block was put into operation in 2003 and the current oil production rate is only 0.18 %, And the recovery rate is 3.08%. According to the status quo of “double low” reservoir, the research on comprehensive geology and oil recovery techniques is optimized, and the development mode suitable for the reservoir is optimized. The fractured layer system, It is very important to develop similar reservoirs by imitating the development of small well spacing of horizontal wells and improving the development effect of low permeability reservoirs.