傅里叶有限差分深度偏移成像方法研究和应用

Study and application of Fourier finite-difference depth migration method.

匡斌 ,王华忠 ,陈世军 ,王常波 ,胡中标 ,马在田 .傅里叶有限差分深度偏移成像方法研究和应用 .石油地球物理勘探 ,2 0 0 1,36 (6 ) :6 98～ 70 3 本文介绍了傅里叶有限差分叠前深度偏移方法的理论研究及应用情况 ,通过对复杂的 Mar-mousi模型进行处理 ,地震波场不失真 ,成像质量高。同时展示了对 ZX地区二维地震资料的处理结果 ,并与 Kirchhoff积分方法处理效果进行了简单对比。结果表明 ,傅里叶有限差分偏移法在成像效果和振幅保真方面都优于 Kirchhoff积分法 ,但计算效率较低。

The paper introduced theoretic study and real application of Fourier finite-difference prestack depth migration which has an advantages of distortionless seismic wavefield and high-quality of imaging by processing of complicated Marmousi model. The processing results of 2-D seismic data in ZX area are also presented at same time. Comparing with that of Kirchhoff integration method, the results of Fourier finite-difference prestack depth migration is better in imaging and amplitude fidelity, but poor in computational efficiency.