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以逆掩推覆构造作为主要目标的地震采集区块,往往存在地层倾角大、纵向速度反转、静校正问题突出、地震资料成像效果较差等难点。本文通过对目标区以往地震采集资料的分析,探讨了应用综合建模设计技术、精细的表层结构调查技术、卫星图片辅助设计技术、井震联合激发技术、层析反演静校正等多项先进技术,获得逆掩推覆构造资料较以往信噪比有明显提高,主要目的层信息丰富,波组特征明显,取得了比较好的剖面效果,从而为类似地区的地震采集提供借鉴。
The seismic acquisition blocks with thrust cover overtop structure as main objective often have some problems such as large dip of formation, reversal of longitudinal velocity, prominent problem of static correction and poor imaging effect of seismic data. Based on the analysis of previous seismic acquisition data in the target area, this paper discusses the application of many advanced modeling techniques, such as comprehensive modeling and design techniques, fine surface texture survey techniques, satellite imagery aided design techniques, well seismic joint excitation techniques, and tomographic inversion static correction Technology, obtaining overthrust nappe structure information has significantly improved the signal-to-noise ratio compared with the past, the main target layer is rich in information, and the wave group has obvious features and good profile effect is obtained, thereby providing reference for the seismic acquisition in similar areas.