胡状集油田沙三段低电阻率油层成因分析与研究  

On Origin of Shasan Oil Layer with Low Resistivity in Huzhuangji Oilfield

作　　者：田素月[1] 焦翠华[2] 徐朝晖[2] 

机构地区：[1]中原石油勘探局测井公司,河南濮阳457001 [2]石油大学资源与信息学院,北京102249

出　　处：《测井技术》2004年第6期522-525,共4页Well Logging Technology

摘　　要：以岩心的扫描电镜、X衍射、粘土矿物分析、阳离子交换容量测量等资料为依据 ,对胡状集油田沙三段的低电阻率油层的形成机理及控制因素进行了分析 ,认为影响该区油层电阻率的因素是多方面的 ,其中最主要的影响因素是高矿化度地层水、中高孔隙度、粘土的分布形式和高束缚水含量 ;泥质含量、胶结物类型以及导电性矿物是次要因素 ,而粘土的附加导电性对油层电阻率的影响很小。分析研究可为该地区地质背景相似地区低电阻率油层测井地质解释提供可靠依据。On the basis of core data from electronic scanner, X-diffraction, clay mineral analyses and cation-exchange capacity measurements, analysed are the geneses and controlling factors of Shasan oil zone with low resistivity in Huzhuangji Oilfield, which reveals that the low resistivity formation is caused by various factors, but the most important factors are formation water with high salinity, medium-high porosity,clay distribution and high bound water saturation; shale content, cements and conductive minerals are the second factors while additional conductivity of clays only has a little effect on resistivity of oil zones. The above result will provide reliable basis for log interpretation of oil zones with low resistivity having similar geological background.

关 键 词：低电阻率油层 成因 高矿化度 高束缚水饱和度 阳离子交换容量 

分 类 号：TE122.21[石油与天然气工程—油气勘探]