Abstract:Weibei depression is a secondary depression basin in Changwei depression. It is also a traditional oil and gas exploitation area. Thick dark mudstone shale and oil shale which are good hydrocarbon source rocks sedimented in the second section of Kongdian formation in Weibei depression. The second section of Kongdian formation is the raw and reservoir horizons of shale gas. Through analysis on gas logging data of Canyi well in Changye, combining with the analysis of experimental data, reservoir evaluation by using actual logging data, and identification of actural oil and gas have been explained. It is showed that the method can make a more accurate judgment system for the oil and gas accumulation in the shale gas enrichment zone.