低渗砂岩气层岩石电性实验研究  

Experimental Study on Electrical Properties of the Tight Sandstone Rock

作　　者：贾东林[1,2] 贾飞雄[1,2] 侯亚妮[1,2] 

机构地区：[1]西安石油大学,陕西西安710065 [2]延长油田股份有限公司瓦窑堡采油厂,陕西延安717300

出　　处：《辽宁化工》2012年第2期128-130,159,共4页Liaoning Chemical Industry

摘　　要：含水饱和度对岩石电阻率、饱和度指数以及地层因素有重要影响,这些参数是利用电测井资料评价含气饱和度的重要参数。测量储层不同含水饱和度岩石的电性,对于研究储层原始含气饱和度、气层分布和综合评价含气性具有重要意义。本文通过室内实验研究了不同岩性、渗透率的岩心在不同含水饱和度条件下岩心电阻率的变化,分析了岩心含水饱和度的变化对低渗岩石电阻率和饱和度指数以及地层因素的影响。Water saturation has important effect on rock resistivity,saturation exponent and formation resistivity factor.These parameters are key parameters which are used to evaluate the gas saturation in electrical logging.To measure electrical properties of reservoir rocks containing different water saturation,it has great significance to study the original gas saturation,gas distribution and comprehensively evaluate gas-bearing.Through lab experiments,the resistivity changing of rocks with different lithology and permeability under different water saturation was studied,and effects of core water saturation changing on low permeability rock resistivity,saturation exponent and formation factor were analyzed.

关 键 词：低渗岩心 岩心电阻率 含水饱和度 电阻率指数 地层因素 

分 类 号：TE122[石油与天然气工程—油气勘探]