技术方法

混合相位子波有色反褶积

  • 李 靖 ,
  • 周世新 ,
  • 巩书华 ,
  • 郑朝阳 ,
  • 付德亮
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  • 1.中国石油勘探开发研究院西北分院,甘肃兰州730020; 2.中国石油大学(北京)中国石油天然气集团公司物探重点实验室,北京102249
王万里(1986-),男,硕士,主要从事地震资料处理和储层预测研究工作。地址:(730020)甘肃省兰州市城关区雁儿湾路535 号。电话:(0931)8686346。E-mail:wang_wl@petrochina.com.cn

网络出版日期: 2013-06-01

基金资助

大型油气田及煤层气开发国家重大科技专项“基于GeoEast 的多波地震、测井和地质信息的裂缝储层综合分析软件集成”子课题(编号:2011ZX05019-008-005)资助。

Colored deconvolution of mixed phase wavelet

  • LI Jing ,
  • ZHOU Shixin ,
  • GONG Shuhua ,
  • ZHENG Zhaoyang ,
  • FU Deliang
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  • 1. PetroChina Research Institute of Petroleum Exploration & Development-Northwest, Lanzhou 730020, China; 2. Key Laboratory of Geophysical Exploration, China National Petroleum Corporation, China University of Petroleum, Beijing 102249, China

Online published: 2013-06-01

摘要

常规的高分辨率处理方法假设反射系数序列服从高斯白噪的统计特征。利用实际测井数据得到的 反射系数进行统计分析,得出了反射系数非高斯分布且频谱偏蓝的结论,并把这一结论运用到混合相位 子波提取和反褶积处理中。为避免相位卷绕和累计误差对相位估算精度的影响,在对高阶累积量混合相 位子波的提取方法进行系统分析的基础上,提出了基于多路径平均双谱法的混合相位子波估算方法。实 际地震数据的试处理表明:该方法能有效改善地震记录的分辨率,增强地震记录反映薄层内幕的能力。

本文引用格式

李 靖 , 周世新 , 巩书华 , 郑朝阳 , 付德亮 . 混合相位子波有色反褶积[J]. 岩性油气藏, 2013 , 25(3) : 82 -86 . DOI: 10.3969/j.issn.1673-8926.2013.03.014

Abstract

The conventional seismic data process methods for high resolution assume that reflection coefficient series are accordant with Gaussian Gauss White Noise. Through the statistical analysis of reflection coefficients obtained from the actual logging data, it is concluded that the reflection coefficients are non-Gaussian distribution and their spectrums tend to blue, which can be applied to extract mixed phase wavelet and carry out deconvolution. Based on systematic analysis of the method of high order cumulant mixed phase wavelet extraction, and in order to avoid the influence of phase winding and accumulated error on phase estimation accuracy, the method of multi path average bispectrum was proposed. The actual seismic data processing result shows that this method can improve the resolution of seismic records
effectively and enhance its ability of detecting thin layer.

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