地震采集方案评价优化分析方法及应用——以准噶尔盆地阜康凹陷为例

Optimization analysis method of seismic acquisition scheme evaluation and its application-Taking Fukang sag in Junggar Basin as an example

准噶尔盆地多数勘探领域处于沙漠戈壁地区,由于近地表吸收衰减强和各种类型的噪声多而强等因素的影响,为提高采集资料的品质,常常采用“强化”参数下的“两宽一高”地震采集。在“提质增效,高效勘探”的背景下,从兼顾数据品质和采集成本的技术经济一体化考虑,评价已有采集方案,提出优化方案,成为该地区及业界关注和研究的热点。通过分析准噶尔盆地阜康凹陷近年来实施的多块“两宽一高”地震采集方案并结合相关理论研究,笔者提出了一种用定量关系为依据的采集方案评价优化流程,得出了研究区各个采集方案的适当或需进一步优化的相关结论,为研究区下一步采集方案优化设计提供了有效指导。

Most exploration areas in the Junggar basin are in the desert Gobi area.Due to the strong absorption and attenuation near the surface and various types of noise,the"two widths and one height"seismic acquisition under"enhanced"parameters is often used to improve the quality of collected data.Under the background of"improving quality,increasing efficiency and efficient exploration",from the perspective of technical and economic integration that takes into account both data quality and acquisition cost,evaluating existing acquisition schemes and proposing optimization schemes have become the focus of attention and research in the region and the industry.By analyzing the multi-block"two widths and one height"seismic acquisition scheme implemented in Fukang sag of Junggar Basin in recent years and combining it with relevant theoretical research,this paper puts forward an evaluation and optimization process of the acquisition scheme based on a quantitative relationship.It draws relevant conclusions that each acquisition scheme in the study area is appropriate or needs to be further optimized providing effective guidance for the next optimization design.This provides practical guidance for the next optimization design of the acquisition scheme in the study area.