Abstract: Fracture identification and evaluation are difficult to run in the research of reservoir quality in oilfield development. Based on the core data and EMI fracture analysis of Lower Wuerhe reservoir in District No.8 in Karamay oil field, the basic characteristics of various fractures in this area are described, numerous conventional well log data are analyzed and calibrated in terms of natural fractures, thus developing model for identification of the fractures by means of conventional well log data. By processing and interpretation of wells in this area, the types and developed extent of the fractures in single well are confirmed, the space distribution of the fractures in Lower Wuerhe reservoir is revealed.

Key words: fracture type, Lower Wuerhe formation, identification model, core, well log