用岩芯模拟测试参数做模型正演预测储层油、气、水边界

利用地震资料进行AVO油气检测，需要提供准确的储层岩石物性参数．通过对准噶尔盆地西部储层岩样实验室测定，得出合不同流体岩石在不同温度、压力下纵横波速度、速度比、泊松比的变化规律及差异．根据其差异性，用Zoeppritz方程做模型正演，以确定目的层有无AVO响应，以便对地震剖面做针对性的特殊处理．实际应用结果表明，用实验室测试的岩石物性参数做模型正演，可提高AVO检测的准确性，为用地震资料结合实验室岩芯测试参数预测地层油、气、水边界提供了有效手段．

OIL,GAS AND WATER DISTRIBUTION DETECTION FORWARD MODELING WITH ELASTIC PARAMETERS OF CORE SAMPLES UNDER SIMULATED CONDITION

TO conduct AVO hydrocarbon examination by using seismic data, accurate reservoir petrophysical parameters must be provided. By measuring in laboratory the reservoir rock specimen of the west of Junggar Basin, the variation rules and the difference of p-wave and S-wave velocities, velocity and Poisson ratios of the rocks containing different fluid can be achieved under the conditions of different temperatures and pressures. According to the difference, Zoeppriatz equation can be adopted to make forward model to determine whether the target layers have AVO responses or not and provide a special objective processing for seismic sections. Actual results indicate that using petrophysical arameters measured in laboratory to make forward model can improve the accuracy of AVO examination and provide an effective method for combining seismic data with petrophysical parameters measured in laboratory to predict the eders of oil, gas and water of layer.