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为了解决复杂构造勘探问题和地层岩性勘探问题,提高勘探的详细度和准确度以及勘探工作的总效果,我们以EM地区为基地进行了陆地三维地震勘探方法技术试验研究,取得了基本成果。本文就野外工作、资料处理、成果解释以及效果分析几个方面做一些初步介绍。研究工作成果,从理论上和实践上证实了三维地震勘探应用的必要性以及在我国当前条件下用现有的观测设备和小型数处系统进行采集和处理三维资料的现实可行性。文中着重论述了选择合适的观测系统、速度参数在三维偏移处现中的重要性,用二步法偏移代替全三维偏移的精度和效率,某些特殊的三维显示和解释方法,并对三维地震做出初步评价及指出今后我国在能源地质普查、勘探和开发各阶段中,在构造勘探和地层岩性勘探的工作上都存在着要进行三维地震勘探工作的客观需要,因此积极地逐步推广一套三维地震方法技术是我国地震勘探发展中一个十分重要的问题。
In order to solve the problem of complex structural exploration and stratigraphic lithology exploration, improve the detail and accuracy of exploration and the total effect of exploration work, we conducted a pilot study on terrestrial 3D seismic exploration method based on EM area and achieved the basic results. This article on the field work, data processing, results interpretation and effectiveness analysis of some aspects to do some initial introduction. The research work has proved the necessity of 3D seismic prospecting theoretically and practically and the practical feasibility of collecting and processing 3D seismic data using the existing observation equipment and small-scale systems in our country. This paper focuses on the importance of choosing the appropriate observing system and velocity parameters in 3D displacements. The accuracy and efficiency of 3D displacements are replaced by two-step displacements, and some special 3D display and interpretation methods are also discussed This paper makes a preliminary assessment of 3D seismic and points out that in the future stages of census, exploration and development of energy geology in our country, there is an objective need to carry out 3D seismic exploration work in the construction of exploration and stratigraphic lithological exploration. Therefore, The step-by-step promotion of a set of 3D seismic technology is a very important issue in the development of seismic exploration in China.