在缺乏钻井资料的条件下,通过对地震属性中三瞬参数的理论分析,瞬时振幅、频率与页岩气聚集区有直接的关系,主要表现为地震波能量向低频方向移动;瞬时相位与反射强度无关,能够增强弱的相关同相轴的连续性。对某区二维叠偏地震数据提取三瞬属性,可确定页岩气地层顶底板地震层位,并推断出可能的页岩气聚集区。 In the absence of drilling data, through the theoretical analysis of the three instantaneous parameters in seismic attributes, the instantaneous amplitude and frequency have a direct relationship with the shale gas accumulation area, which mainly shows that the seismic energy moves toward the low frequency. The instantaneous phase and reflection intensity Irrelevant, can enhance the continuity of weak related events. Extracting the tri-instantaneous properties of 2D seismic data in a certain area can determine the top and bottom seismic layers of the shale gas stratum and infer the possible shale gas accumulation area.