一种剩余静校正方法在HJB三维处理中的应用.pdfVIP

中 国 石 油 勘 探 第21卷　第6期 CHINA PETROLEUM EXPLORATION 2016年11月 DOI: 10.3969/j.issn.1672-7703.2016.06.0015 一种剩余静校正方法在HJB三维处理中的应用 李国生 马丰臣 汤浩哲 （中国石油集团东方地球物理公司研究院处理中心） 摘 要：HJB 三维工区地表起伏剧烈，低降速带速度和厚度变化剧烈，造成三维地震资料信噪比低、静校正问 题严重，地震资料成像质量较差，目的层波组特征难以连续追踪等问题。在三维地震资料静校正处理过程中，常规的 剩余静校正方法效果不理想，难以解决该工区地震资料的静校正问题。通过方法研究与试验应用，改进后的剩余静校 正计算方法弥补了常规剩余静校正一些算法的不足，运用于HJB三维中取得了良好的成像效果。 关键词：复杂地表；静校正问题；剩余静校正 ;成像效果 中图分类号：P631.4　　　　　文献标识码：A Application of an improved residual static correction technique in HJB 3D seismic data processing Li Guosheng, Ma Fengchen,Tang Haozhe (Processing Center, Geophysical Research Institute of BGP) Abstract: The HJB 3D area is characterized by large surface relief and significant changes in velocities and thicknesses of low-velocity zones. The 3D seismic data acquired in the area have low signal-to-noise ratio (SNR) and severe static correction problems. Consequently, the images derived from such data are poor in quality, making the wave group features of the target formation impossibly be tracked continuously. For static correction of the 3D seismic data, the conventional residual static correction techniques cannot effectively resolve the above-mentioned problems. After researches and tests, this paper presents an improved residual static correction technique, which covers the deficiencies of some algorithms for conventional residual static correction techniques. The improved technique has been applied in the processing of HJB 3D seismic data, with outstanding imaging performance. Key words: complex surface, static correction problem, residual static correction, imaging