Prediction technique for low tight reservoirs in Majing gas field of Sichuan Basin

The gas reservoir of Penglaizheng member(J3p) is a low tight sandstone reservoir with strong heterogeneity. How to distinguish such a gas reservoir has been a puzzling question for a long time. In this paper, the author discussed a method designed for identification of such low tight sandstone reservoirs. By extracting features from logging and seismic data for gas reservoirs of different sizes, the method can effectively recognize this kind of gas reservoirs. The method provides a basis for further assessment and development of this kind of gas reservoirs.