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常用的折射波解释方法地震处理过程中要提取初至波的走时。实际地震数据中存在噪音,难以准确提取走时,降低了解释的精度。针对此缺点,本文利用模型对适用于多个折射界面的褶积叠加成像方法进行了研究,通过褶积和互相关运算来实现走时信息的相加和相减,避免了走时信息的拾取过程。褶积成像法不局限于仅利用折射波的运动学信息(走时),还利用部分动力学信息(波形信息)。通过综合利用多个折射界面的信息,进行多界面成像,在常规解释方法上有了很大改进。
Commonly used method of refraction wave interpretation Earthquake processing to extract the first arrival wave travel time. There is noise in the actual seismic data, it is difficult to accurately extract the travel time, reducing the accuracy of interpretation. In view of this shortcomings, this paper uses the model to study the convolutional overlay imaging method applied to multiple refractive interfaces. The addition and subtraction of traveltime information can be realized by convolution and cross-correlation operation, which avoids the pick-up process of traveltime information. The convolution imaging method is not limited to the kinematics information (travel time) using only the refracted waves, but also the partial dynamics information (waveform information). Through comprehensive utilization of the information of multiple refractive interfaces, multi-interface imaging has been greatly improved in the conventional interpretation methods.