中国石油勘探 ›› 2016, Vol. 21 ›› Issue (6): 116-119.

• 工程技术 • 上一篇    下一篇

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   

  1. 中国石油集团东方地球物理公司研究院处理中心
  • 出版日期:2016-11-10 发布日期:2016-11-10
  • 基金资助:
    国家重点基础研究发展计划(973)项目“陆相页岩油富集要素与有利区预测”(2014CB239104)。

Application of an improved residual static correction technique in HJB 3D seismic data processing

Li Guosheng, Ma Fengchen,Tang Haozhe   

  1. Processing Center, Geophysical Research Institute of BGP
  • Online:2016-11-10 Published:2016-11-10

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

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 performance