Logging Interpretation and Application Based on Three-water Model in Fractured Tight Sand Reservoirs

The interpretation model of the fractured tight sandstone is basis of logging evaluation and quantitative calculation. According to the geological features of the fractured tight sandstone, the composition of the pore space is analyzed. Based on three-water conductive model for logging interpretation method, the conductive mechanism is discussed and derived, the three-water interpretation method for fractured formation is proposed, which can achieve a quantitative calculation of the saturation. In Longtan formation of Huangqiao area, the three-water components calculated is good agreement with NMR logging interpretation results, and the test results indicate that this model is applicable for logging evaluation of the fractured tight sandstone.