Geophysical Method for Recognizing Faults and Fracture Sizes

Geophysical technique itself exists restriction of resolution and fidelity, so it has different precision levels and scales in the application of fault and fracture identification.Therefore, we use different techniques to identify the fault and fracture at different scales: for the identification of faults, the large faults are interpreted by the seismic cross section and seiscrop section, while coherence analysis and other new technique is used for the small faults; on the identification of fracture, multi-azimuth AVO is mainly used to identify the developmental characteristics of large fracture, and imaging logging is used to identify that of small fracture.Practical application shows that these methods in the corresponding scale fault and fracture identification have good effect.