ABSTRACT
Fracture is not only the low permeability oil and gas reservoir space, but also the low permeability oil and gas migration channel, so it takes a very important part in the oil and gas exploration and development (Gale, 2007). As a key technology of oil and gas resource evaluation, logging technology is an important means of reservoir fracture study, especially the imaging logging (such as FMI) can directly identify fractures and quantitative calculate the porosity, permeability and underground opening of fractures. But because imaging logging is high cost and its logging data is very limited, so how to make use of cheap and complete data of conventional logging information to explain fractures is an important research subject all the time. The complicated geological conditions and the severe heterogeneity of low permeability reservoir make the application of conventional log data to identify and evaluate fracture facing many challenges.
