摘要
鄂尔多斯盆地东北部三叠系延长组长6储层为孔隙结构复杂的低孔隙度低渗透率储层。该地区长6储层的岩电实验分析结果表明,岩电关系较为复杂,其中地层因素-孔隙度关系中,a、m参数变化范围较大,a、m呈明显的反向关系,除个别存在微裂缝的储层m值接近于1外,胶结指数m与物性参数的关系与典型的中高孔渗储层不同,具体特征为m值随着孔隙度、渗透率的增大而增大;同时,含水饱和度-电阻率增大系数在双对数坐标下的关系除传统Archie公式的直线型外,很多还呈明显的"三段式"线性关系。
The Triassic Chang 6 reservoir in northeast Ordos basin is a low-porosity and low-permeability reservoir with complex pore structure.The experiments show that the relationship between lithology and logging of Chang 6 reservoir is complex,and a and m parameters vary a lot which presents reverse relationship.Except some reservoirs with microfractures which m value is nearly 1,the relationship between cementation exponent m and physical property parameters is different from that of middlie or high porosity reservoir.The value of m increased with porosity and permeability increase.Meanwhile the enhancement coefficient of water saturation-resistivity is linear and also syllogistic linear.
出处
《国外测井技术》
2012年第1期13-16,3,共4页
World Well Logging Technology
基金
"十一五"国家科技支撑计划基金项目资助(2007BAB1701)
关键词
低孔低渗
岩电关系
孔隙结构
胶结指数
饱和度指数
low porosity and low permeability
relationship between lithology and logging
pore structure
cementation exponent
saturation exponent
