Abstract: Petroliferous area in the Area of Well K75 in Karamay oilfield was first predicted with AVO technique in Xinjiang, which was accomplished as follows: Forward trace assemblage model is established from S-wave and P-wave data in oil well, ten the top and bottom of reservoir on the actual profile are followed with AVO technique to examine if both responses match well, hereafter tracing along the sections according to this characteristics to determine oil water boundary and predict other potential oil-bearing zones with AVO anomaly. Confirmed with drilling and testing data, this technique is successful for use in this area.

Key words: Karamay oilfield, Area of Well K75, AVO inspection, Polarity conversion, Forward trace assemblage model, Poisson's ratio