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在油气田的勘探工作中,发展3D地震勘探是很重要的。世界上一些地球物理公司已经获得了3D地震工作上较为成熟的经验。本文仅讨论3D资料的采集技术,其中包括恢复性放炮规则、震源最大频率的公式中的系数的计算、空间采样间隔公式和一个方程,我们可用该方程来确定资料点数、所需的炮点数和覆盖次数之间的关系。自七十年代以来,国内外陆续地开展了3D地震的工作。法国CGG、美国西方地球物理公司、西德PRAKLA—SEISMOS公司等大公司均有成熟的3D工作经验,其中包括野外数据的采集、数据的处理、数据的解释等各个主要环节.我国也积累了不少实际工作经验。本文仅对数据采集工作的有关问题作一初步探讨,以期有利于3D的实际工作。
In the exploration of oil and gas fields, the development of 3D seismic exploration is very important. Some of the world’s geophysical companies have gained more sophisticated experience with 3D seismic work. This article discusses only the 3D data acquisition techniques, including the recalciton blasting rules, the calculation of the coefficients in the formula for the maximum source frequency, the spatial sampling interval formula, and an equation that we can use to determine the number of data points, the number of shots required, The relationship between the number of overlaps. Since the 1970s, 3D seismic work has been carried out in China and abroad. France CGG, the American Western Geophysical Company, West Germany PRAKLA-SEISMOS companies and other large companies have a mature 3D work experience, including field data collection, data processing, data interpretation, and other major sectors. China also accumulated not Less practical work experience. This article only a preliminary discussion of the relevant issues of data acquisition in order to facilitate the actual work of 3D.