多分量转换波地震勘探初探

多分量地震勘探的理论方法研究起步较早,其中多分量转换波地震勘探由于其投资小、获取地下信息多的原因。近几年逐渐成为地震勘探领域的研究热点。此外,由于多分量勘探可以同时提供纵波和横波的速度信息,使岩性研究成为可能;快慢横波的分离和分裂时差又额外地给我们提供了进行非均质性介质弹性参数反演的可能,包括各向异性因子、裂缝的发育方向和发育密度。总之,多分量转换波地震勘探使我们在常规地震勘探的投资框架下,使岩性、缝洞型储层的发现及开发地震的量化成为可能。在本篇文章中,我们简单介绍这项理论方法技术。以及多分量转换波地震的发展现状及前景。

Seismic exploration with multi - components transformed wave

The principle and method of the multi-components seismic exploration have been researched long time before. In a result, the technique of transformed wave exploration has become a "hot subject" because it needs less investment and can get a lot of underground information. Especially, the lithological inversion becomes possible to apply compressed velocity and shear velocity, simulaneusly provided by the multi-components exploration. More, the split of the fast shear wave and slow shear wave, including the difference of time, make the anisotropy parameters inversion possible. These anisotropy parameters include anisotropy factor, fracture direction and fracture density.Anyway, the multi-components transformed wave exploration, in the cost of P wave exploration, can accurately recognize the lithological and fractured reservoir, and also provide feasible information for the oil and gas development. In this paper, the new technique, and the current situation and foreground of this technique are introduced.