对克拉玛依风城区低电阻率稠油层的认识

对风城区重检３井稠油低电阻率油层地质特征综合研究后认为，低电阻稠油层段多为高含泥质砂岩以及泥岩与低含泥质砂岩的互层组成，其中低含泥质砂岩是含油层或产层；但由于整个稠油层段泥质含量高，蒙脱石粘土矿物占优势，造成束缚水饱和度增大，加之矿化度又高，故井中呈低电阻率显示。对稠油低阻油层进行解释时不能只套用中、高阻油层含油饱和度标准，必须同时对地质特征与测井信息进行分析，才能提高油层解释的符合率。

UNDERSTANDING OFF VISCOUS OIL RESERVOIR OF LOW RESISTIVITY IN FENGCHENG AREA OF KARAMAY OILFIELD

A Comprehensive study of geologic characteristica of low-resistivity viscous oil reaervoir in Well Zhongjian 3 inFengcheng area showed that low-reasistivity viscous oil formation is mostly composed of sandstone with high clay con-tent,and mudstone interbedded with sandstone with low clay content.in which sandstone with low clay content is oil-bedring/production formation.Due to increase in irreducible water saturation resulting from high clay content in full-scale viscous oil interval.predominatedby montmorillonite cldy mineral as well as its higher salinity,low-resistivitypresentation occur in well.ln order thdt well log interpretations match well oil sdturdtion standards of moderate-andhigh-resistivity oil-bearing zones can't be only followed,the geologic characteristics and well log information must beanalysed simultaneously.