Wavetracing层析成像方法及其在井间地震中的应用

层析成像技术被广泛应用于矿产勘查、油气开发及工程勘查和检测领域。基于运动学特征的走时层析成像方法计算效率较高,但精度较低。基于动力学特征的波动方程层析成像方法精度较高,但计算时间较长。Wavetracing层析成像方法在射线追踪方面简单、高效,能够提供与有限频率实际资料相一致的传播路径和旅行时。应用该方法对胜利油田垦71地区多对井间地震资料进行的层析成像速度反演取得了良好结果。

Wavetracing tomography technique and its application in crosshole seismic

Seismic computed tomography is widely applied in mineral exploration, oil exploitation, engineering survey and detection. The travel time tomography based on movement diagnostic has higher computational efficiency, but has poorer precision. The wave equation tomography based on dynamics has higher precision, but has longer computation time. The wavetracing tomography is of simple, effective at ray tracing, and can provide propagation path and traveltime which is consistent with the finite frequency in real data. A good result has been achieved after it was applied to the crosswell seismic data acquired from Ken71 area in Shengli Oil field.