多分量勘探技术

在 2 0 0 3年欧洲地球物理年会上 ,多分量勘探技术依然是个热门专题。研究内容涉及多分量数据采集、多分量资料处理以及多分量资料解释技术和应用实例。在多分量采集技术方面 ,除了介绍新的采集仪器和设备的使用外 ,三分量检波器的矢量保真度问题得到充分的重视 ;多分量资料处理技术的主要研究内容依然是各向异性的转换点计算、波场分离、PS波叠前时间偏移和速度分析等 ;关于多分量资料解释技术 ,速度比的几种组合方法的应用令人深受启发。不同地区成功应用实例表明 ,地震地质条件对多分量勘探的应用极其重要。

Advances in multi-component seismic technology

The multi-component seismic survey was still a popular topic at the 65 th EAGE annual meeting. The presentations involved all aspects of multi-component seismic technology, including data acquisition, processing and interpretation, as well as case studies. For data acquisition, in addition to introduction of new instruments and equipment, the vector fidelity of the three component geophones has become a hot topic. For data processing, the topics were focused on the calculation of converted-points in anisotropic media, wavefield separation, prestack time migration of PS -wave data, and velocity analysis. It was the adoption of different combination of velocity ratio that was most impressed and enlightened in interpretation for multi-component data. Case studies show that seismic and geologic conditions are vital to multi-component seismic survey.