Microcosmic influence factor for electrical properties of low-resistivity reservoir in Jiyang Depression;

Oil water layer recognition method for Gaotaizi low resistivity reservoir in Dalaoyefu oil field in Jilin Province, and its application.;

In this paper,the present state of the cause of low resistivity reservoir is Summarizeed,also the development of the electrical model for different kinds of cause of low resistivity is summarized.

It was applied to the interpretation of low resistivity reservoir in the northern area of Tarim basin.

There are many difficulties for judging reservoir and fluid properties because of the Feixianguan Ertan high resistivity zones in the north-east Sichuan.

The statistics for 57 oil and gas layers of 22 oilfields in the Tarim Basin shows that reservoirs of poor physical properties are prone to have low resistivity and those condensate gas reservoirs of moderate fluid density or light oil reservoirs are prone to form low resistivity oil layers.

Classification of low resistivity oil layers in Erdos Basin is introduced,and their forming mechanism is analyzed.

The low resistivity oil layer is well identified by the identification method of swept layer based on the inverted frequency spectrum characteristics of log differential signals.