RESERVOIR PREDICTION METHODS OF NONMARIN FACIES CLASTIC ROCK OIL/GAS RESERVOIRS IN GSM REGION IN CENTRAL SICHUAN

In the paper, taking Shalmember reservoir of GSM structure as an example, we present a set of prediction methods of clastic facies reservoirs: to build geologic model of the reservoirs based on geologic and well logging data, then reconstruct depositional evolution process in light of seismic facies analysis using the methods such as reflection strength, strata dip variation, waveform classification etc. and adopt random modeling technique to invert petrophysical parameters and determine favorable petrophysical zones, evaluate reservoir condition in combination with fracture system analysis. The satisfaction results have been achieved with commercial productions being encountered in the all provided drilling objectives in GSM region with the set of techniques.