作　　者： ; ;

机构地区： 西南石油大学资源与环境学院

出　　处： 《天然气技术》 2009年第2期24-27,共4页

摘　　要： YC地区地震地质条件极为复杂,主要表现为地表被巨厚黄土覆盖且高程变化剧烈,地下为大倾角逆掩推覆构造,由此导致地震记录信噪比低和近地表静校正问题严重。针对低信噪比资料及宽线采集施工给资料处理带来的难度,提出运用时频域大地吸收衰减补偿技术、静校正技术、串联去噪技术、高精度速度分析及地震成像方法等技术,建立一套适合黄土塬区地质特点的地震资料处理方法和流程,并通过对实际资料的处理和应用,验证了该技术的实用性和可靠性。 In YC area,seismic and geologic conditions are extremely complex,surface is covered by very thick loess,elevation varies greatly,and there is a high-dip overthrust nappe that lies beneath the surface.Thus,all of these result in the low signal-to-noise ratio(SNR) of seismic record and the serious static correction at near surface.Aiming at data-processingdifficulties caused by low SNR and wide-line acquisition,the seismic-data processing method and flow suitable for geological characteristics in loess plateau were developed by employing some technologies including the compensation technology of attenuation by earth absorption in time-frequency domain,the static correction technology,the noise-eliminated in series,the high-precision velocity analysis and seismic imaging method.Both feasibility and practicability were also verified by actual data processing and application.

关 键 词： 黄土塬 宽线地震 静校正 串联去噪 地震数据处理

领　　域： [天文地球] [天文地球]