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浅层油气藏由于埋藏浅,开采成本低,近年来受到越来越多的重视.浅层地震资料受近地表因素影响较大,噪声干扰严重,有效覆盖次数少,速度很难精确拾取.本文以D工区为例,总结出一套针对这种超浅层油气藏的地震处理关键技术,有效解决了静校正、叠前噪声压制以及精确速度场建立等方面的问题,较大改善了成像效果,尤其是断裂的成像质量.新地震资料目的层断点和断面波更加清晰,为断裂解释及断裂特征分析提供了可靠的依据.
Shallow reservoirs have been paid more and more attention in recent years due to their shallow burial and low mining cost.Shallow seismic data are greatly influenced by the near surface factors, with serious noise interference, few effective coverage and difficult to pick up accurately. Taking D Station as an example, this paper summarizes a set of key technologies for seismic processing of ultra-shallow oil and gas reservoirs, and effectively solves the problems of static correction, pre-stack noise suppression and precise velocity field establishment, greatly improves the imaging effect , Especially the imaging quality of the fault.The breakpoints and the section waves of the target layer of the new seismic data are more clear, which provides a reliable basis for the interpretation of faults and the analysis of fracture characteristics.