复杂地表条件下的三维观测系统优化设计

Optimization design of 3D observation system under complex surface condition

通常情况下常规观测系统主要考虑的是覆盖次数问题,对于地震勘探来说这还是远远不够.我们不仅要考虑覆盖次数问题,还要考虑很多其他问题,比如地表的复杂性、观测系统的方位角、偏移距、炮检距等问题,这就要求我们用软件直观的显示出来.最近几年有人提出砖墙式观测系统,本文结合某勘探区三维地震勘探实例分别对砖墙式观测系统和常规线束状观测系统进行了观测系统设计对比,通过对其方位角、炮检距等问题的分析,得出砖墙式观测系统在方位角、炮检距等方面明显要优于常规线束状观测系统,这为观测系统优化设计提供了依据.

The coverage numbers are considered to be the most important in the conventional observation system, while it is not enough for the seismic exploration. During the exploration, we consider not only coverage numbers, but also many other issues, such as the complexity of the surface, the azimuth and offset of the observation systems, it needs to display directly by the software. The brick-wall observation system is proposed in recent years, in this paper, we compared the design between this new system and the conversional system based on a 3D seismic exploration case. The results show that the brick-wall observation system is superior to conversational system by analyzing the azimuth, offset and other issues. This will provide the basis for designing the observation system.