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L油田构造上位于松辽盆地中央坳陷区齐家-古龙凹陷西侧,经过多年滚动勘探开发,开发区块综合含水率已达90%以上,水淹程度越来越高,剩余油分布高度分散,减缓产量递减、挖掘剩余油潜力是目前亟待解决的问题。采用Eclipse软件进行L油田剩余油分布及挖潜措施研究数值模拟研究,运用虚拟井技术、PETREL-RE技术、分类拟合等方法 ,使区块单井拟合精度达91.6%,精确得到L油田5种剩余油分布类型:注采不完善型、未动用型、井间滞留型、断层遮挡型、河道边部滞留型。利用模拟技术研究适合于L油田高含水期剩余油综合调整挖潜方案:通过老井利用(补层、堵水、调剖、压裂等)及在剩余油富集区补打加密井等有针对性的调整措施,使各生产井能够均匀受效,扩大波及系数,提高储层动用程度,预计阶段采出程度提高0.79个百分点,为L油田下步综合调整提供依据。
L oilfield is structurally located on the west side of Qijia-Gulong Depression in the Central Depression of the Songliao Basin. After years of rolling exploration and development, the comprehensive water cut of the development block has reached over 90% and the water flooding degree is getting higher and higher. The remaining oil distribution height Decentralization, slowing production decline, tap the potential of remaining oil is the urgent problem to be solved. Eclipse software was used to study the residual oil distribution and potential tapping measures in L field. The virtual well technique, PETREL-RE technique and classification fitting method were used to make the fitting accuracy of single well in the block reach 91.6% The remaining oil distribution types: injection and production imperfection type, not used, well retention type, fault occlusion, the river edge retention type. Using simulation technology to study the comprehensive adjustment and tapping potential scheme of remaining oil suitable for high water cut period in L Oilfield: Through the use of old wells (stratification, water shutoff, profile control, fracturing, etc.) It is estimated that the degree of recovery will be increased by 0.79 percentage point, which will provide the basis for the comprehensive adjustment of L Oilfield in the next step.