Sichuan Region Xujiahe Fracture Prediction

The production of fractured reservoir account for more than half of the total oil and gas production of the world, and it is estimated that in the 21st century the fractured reservoir is the most important target for more reserves.So the fractured reservoir predicting becomes one of research hotspot. aim at The complexity, difficulty of prediction and the confidence issues of the actual fracture, This article first described the geological features and logging response characteristics of fractures in detail,combine with the elastic wave equation satisfied by Fractured medium, seismic forward modelling completed. preliminary analysis of the seismic response characteristics of the fracture from that forward modelling.To obtain high-quality seismic data, use the wavelet frequency division reconstruction method to process post-stack seismic data, greatly improving noise-signal ratio of the data.guarantee to obtain accurate reflection time of event when calculate the curvature.By compare the the effect of curvature method and fracture prediction methods of the traditional post-stack seismic attribute,Combine with imaging logging and other well logging response characteristic,Propose a set of comprehensive fracture prediction methods suitable for regions of Sichuan Xujiahe to improve the prediction accuracy and credibility.Finally, in Sichuan (the region) gas field, has successfully achieved the usage of comprehensive fracture prediction technology to identification deep fracture zone in xujiahe group, predicted the main purpose layers of the target area with oil and gas accumulation strip.