摘要
为了更好地认识裂缝性碳酸盐岩油藏的渗流机理,结合实际油藏地质特征设计制作了裂缝不充填和裂缝充填形式的2组大尺度可视化模型。采用油藏实际油样和相似地层水进行水驱油机理模拟实验。观测到由于裂缝性油藏非均质性的影响,水驱后残余油分布形式多种多样。其存在方式各有不同,主要形式有柱状、角隅状和膜状,每种残余油的形成机理也有所不同。结合实验结果,对2组可视化模型水驱油效率以及含水率变化规律进行了分析,发现与常规孔隙介质水驱油特征有明显差别。
Two groups of large scale visual models have been designed and built up based on actual reservoir geology in order to better understand the flow mechanism in fractured carbonate rock reservoirs.Reservoir oil samples and similar formation water are used to simulate the mechanism of water driving oil.It is observed that residual oil distribution varies a lot after water drive due to heterogeneity in fractured reservoirs.The occurrence of residual oil includes column shape,corner shape or membrane shape,which have resulted from different formation mechanisms.Analysis of water displacement efficiency and water cut in the two groups of visual models shows significant difference from that in conventional porous media.
出处
《特种油气藏》
CAS
CSCD
2011年第3期109-111,141,共3页
Special Oil & Gas Reservoirs
基金
国家重大科技专项"复杂裂缝性碳酸盐岩油藏开发关键技术研究"项目子课题"裂缝性碳酸盐岩油藏渗流机理物理模拟研究"(2008ZX05014-004)
关键词
裂缝性碳酸盐岩
大尺度可视化物理模型
模拟实验
剩余油分布
水驱油机理
fractured carbonate rock
large-scale visual physical model
simulated experiment
residual oil distribution
water drive mechanism
作者简介
郭小美（1987-），女，2008年毕业于西南石油大学石油工程专业，现为该校在读硕士研究生，研究方向为油气田开发。
