THE DEEP RESERVOIR EXPLORATION ANALYSIS IN THE GANCHAIGOU REGION OF NORTH AREA OF WESTERN QAIDAM BASIN

Ganchaigou area is located in the transition zone from the south to the north of Western Qaidam Basin,which has the Shizigou enriched sag in the southwest.Although it is the hot exploration area of the Qaidam Basin,it doesn't has larger exploration breakthrough.Based on the analysis of the geological and geochemical features of source rock and the reservoir extract,this paper points out that the oil source is sufficient in this area and the feature of reservoir extract of the deep structure is same with that of E23 source rock of the Ganchaigou region and the Shizigou Sag.This paper analyses comprehensively the structure and reservoir features and pointes out that source-reservoir-cap assemblage is good in this area,and deep structure of the Chai 3 well area especially has better oil-gas exploration potential.