Abstract: Based on geology,core analysis,well logging,mud logging and testing data,through reservoir rock-electric relationship and "four properties" research,the study on low resistivity reasons has been carried out,and the reservoir parameter interpretation model has been established.In combination with RMT logging technology,a set of complete fault+lithology and logging identification methods of low resistance oil layer have been formed,which improves the identification accuracy of reservoir fluid property of Baiqiu area in Nanyang sag and provides technical support for the low resistivity reservoir exploration in Nanyang sag.