碳酸盐岩岩电特性数字岩心仿真  

Simulation of Digital Core of Carbonate Rock with Electrical Properties

作　　者：岳文正[1] 陶果[1] 崔冬子 郑小川[3] 

机构地区：[1]中国石油大学北京地球探测与信息技术重点实验室,北京102249 [2]中国石油集团长城钻探工程有限公司钻井技术服务公司,辽宁盘锦124010 [3]中石油四川石油管理局测井公司,重庆401147

出　　处：《山东科技大学学报（自然科学版）》2011年第3期7-11,20,共6页Journal of Shandong University of Science and Technology(Natural Science)

基　　金：国家自然科学基金项目(41074103);国家重点基础研究发展计划("973"计划)项目(2007CB209601);中国石油天然气集团公司基础研究计划项目(06A30102)

摘　　要：对于碳酸盐岩储层,其孔隙度通常较低,流体驱替难度大,从而造成岩电物理实验难以获得低含水饱和度情况下的电阻率资料。利用数字岩心模型,结合格子气自动机技术对不同含水饱和度情况下电的传输特性进行数值模拟研究,揭示非阿尔奇现象产生的原因,建立新的含水饱和度计算模型。并将计算结果与人工岩心和实际岩心实验的结果作对比,其良好的吻合性表明新模型适于在非阿尔奇碳酸盐岩储层进行准确的含水饱和度评价。Generally,it is difficult to obtain the resistivity data of low water saturation through the physical experiments of carbonate rock reservoirs because of their small porosity preventing fluids draining in pore space.In this paper,lattice gas automata（LGA） based on the digital core was applied to simulate the electrical transport properties of samples with different saturations,revealing the reasons producing non-Archie phenomenon and establishing the new model of water saturation computation.The contrast of results from computation with the results from experiments of artificial cores and actual cores was made and the good agreement of results demonstrated that the new model was suitable to the accurate evaluation of water saturation of non-Archie carbonate rock reservoirs.

关 键 词：格子气自动机 数字岩心 非阿尔奇现象 含水饱和度 

分 类 号：TE319[石油与天然气工程—油气田开发工程]