地震勘探正反演问题的有限元素解法

THE COMPUTATION OF FORWARD AND INVERSE SEISMIC DATA BY FINITEELEMENT TECHNIQUE

长春地质学院

借助于偏微分方程的有限元素解法,本文解决了标量波动方程有限元素法在地震勘探正、反演技术中的应用问题。文中详细讨论了自激自收地震记录的合成、共炮点地震记录的合成、各向变速地震资料的15度近似偏移以及精确偏移等问题,并给出了具体的计算公式。

Through the medium of definite element technique of partial differential equation, this paper presents a solution of applying the definite element technique of scalar wave equation to the forward and inverse computing of seismic data. It discusses mainly the synthesis of zero shot-receiver distance as well as the synthesis of common shot point; 15° approximate and accurate migration of seismie data with varying velocities in all directions etc.Furthmore, the formular special for this computing purpose is given.