Application of micro-resistivity image logging in identifying shale Facies and fractures

The application and study of micro-resistivity image logging to the shale gas reservoir are in the initial stage. Compared with conventional reservoir, the lithology of shale gas reservoir is more complicated, the mineral type is more, the fracture identification is harder. By fine calibrating and analyzing the micro-resistivity image logs, combining with 8 core-slices and of mineral composition 37 cores of well Q1 shale gas reservoir in the southeast of Chongqing, summarizing conventional well logs, we can explore 4 recognition modes of shale facies with plate. Selectting favorable shale facies on this basis, auto-picking up and quantitative evaluating fractures in the area, can improve the efficiency of exploration and development, provide reliable basis to fracturing.