摘要
通过野外考察及油田实际地质资料,总结缝洞形态及典型缝洞单元组合。并根据相似准则将实际缝洞尺寸转化为室内实验参数,建立多种缝洞物理模型,模型由单一溶洞到不同维数缝洞组合和实际缝洞单元,通过物理模拟研究了水驱后剩余油分布特征以及可动性,得到了不同缝洞组合及注采参数条件下六种剩余油主要赋存方式及其形成机制。这对进一步提高缝洞型油藏采收率具有一定的借鉴意义。
Fracture- cavity form and typical combination of fracture- cavity unit are summed up over the actual fieldwork and field geological data. Actual size of seam hole is translated into indoor experimental parameters according to similar guidelines. A variety of fractured physical models from a single cave to a combination of different dimensional fracture- cavity and actual fracture- cavity unit are established. The remaining oil distribution and mobility after water- flooding are studied through physical simulations. Six kinds of remaining oil occurrence and formation mechanisms are obtained under different combinations of fracture- cavity and different injection and production conditions. This has important guiding significance for further improving fracture- cavity reservoir recovery.
出处
《内蒙古石油化工》
CAS
2015年第9期114-117,共4页
Inner Mongolia Petrochemical Industry
基金
国家973计划"碳酸盐岩缝洞型油藏开采机理及数值模拟研究"(2011CB201004)
国家重大专项"剩余油形成机理及定量分析方法研究"(2011ZX05014-003-006HZ)
关键词
缝洞型油藏
物理模拟
剩余油
Fracture-cavity reservoir
Physical simulations
Remaining oil
