Abstract:Xujiahe group reservoir in Bao-Jie area is a typical low porosity and low permeability reservoir which is characterized by quick lateral variations and strong heterogeneity. Because of the restriction of amplitude structure, lithology and physical properties, differential degree of gas and water is poor. It was difficult in reservoir identification which was used by conventional log data. The difficult problem was solved by the application of new logging techniques, such as array induction resistivity, array sonic imaging and nuclear magnetic resonance logging. The results showed that fluid property identification using combination method of dual lateral logging and array induction resistivity has best effect. Gas-bearing of sandstone reservoir can be qualitatively indicated by ratio of compressional wave slowness to shear wave slowness and NMR logging. Meanwhile, micro resistivity imaging played an important role in the research of sedimentary structure and structural feature in Bao-Jie area. After explaining in detail by a few examples, these new logging techniques have been proved to be practical and helpful in fluid property identification and sedimentary structures of the Xujiahe Group reservoirs in Bao-Jie formation of Sichuan Basin.