文章检索
首页» 过刊浏览» 2019» Vol.4» Issue(2) 123-133     DOI : 10.3969/j.issn.2096-1693.2019.02.011
最新目录| | 过刊浏览| 高级检索
时空变自适应反Q滤波
郭志伟1,2,曹思远1,2*,袁殿3 1
1 中国石油大学( 北京) 油气资源与探测国家重点实验室,北京 102249 2 中国石油大学( 北京) 地球物理学院,北京 102249 3 北京亿华通科技股份有限公司,北京 100084
Time-space variant adaptive inverse Q filtering
GUO Zhiwei1,2, CAO Siyuan1,2, YUAN Dian3
1 State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum-Beijing, Beijing 102249, China 2 College of Geophysics, China University of Petroleum-Beijing, Beijing 102249, China 3 Beijing Sinohytec Limited Liability Company, Beijing 100084, China

全文:   HTML (1 KB) 
文章导读  
摘要  大地吸收效应是造成地震波能量衰减、分辨率降低的重要因素,反Q滤波能够对衰减能量进行有效恢复、
提高资料分辨率。常规的反Q滤波采用增益函数,能自适应地减小高频能量的补偿系数,但并不能对资料的信噪比进行很好的自适应。针对该问题,在原有增益函数的基础上,设计了与资料局部信噪比有关的增益参数。该参数具有时空变特征,能较好地适应资料本身的特点。在高信噪比区域,取较大的增益参数,对高频成分进行相对充分的补偿;在低信噪比区域,取较小的增益参数,对高频成分进行相对有限的补偿。模型测试和资料处理表明,该方法对资料的适应性较好,且取得了较好的补偿效果。
服务
把本文推荐给朋友
加入我的书架
加入引用管理器
关键词 : 吸收衰减;反Q滤波;稳定因子;增益参数;时空变;自适应
Abstract

The earth absorption effect is an important factor resulting in the energy attenuation of seismic waves and the degradation of resolution. The inverse Q filtering method helps to restore attenuated energy and improve data resolution. The conventional inverse Q filtering method employs a gain function, which can adaptively reduce the compensation coefficient of high-frequency energy but cannot adapt to the signal to noise ratio (SNR)of data very well. Therefore, the gain parameter related to the local data SNR has been specially designed and proposed based on the gain function. A gain parameter with attributes of spatial and temporal variability can better adapt to the features of data. In high SNR regions, if the chosen value of the gain parameter is high, it can adequately compensate for the high frequency components in a effective manner. In contrast, in low SNR regions, if the chosen value of the gain parameter is smaller, it can only compensate for the high frequency components in a relatively limited manner. Model testing and data processing demonstrates that the inverse Q filtering method can be well adapted to data and achieve a good compensation effect.

Key words: absorption attenuation; inverse Q filtering; stability factor; gain parameter; time-space variant; adaptive
收稿日期: 2019-06-28     
PACS:    
基金资助:国家自然科学基金 (41674128)、国家重点研发计划(SQ2017YFGX030021)、中国石油科技创新基金项目“陆上层间多次波压制技术”(2017D-5007-0302) 联合资助
通讯作者: siyuan.caoff@gmail.com
引用本文:   
郭志伟, 曹思远, 袁殿. 时空变自适应反Q滤波. 石油科学通报, 2019, 02: 123-133
链接本文:  
GUO Zhiwei, CAO Siyuan, YUAN Dian. Time-space variant adaptive inverse Q filtering. Petroleum Science Bulletin, 2019, 02: 123-133. doi: 10.3969/j.issn.2096-1693.2019.02.011
版权所有 2016 《石油科学通报》杂志社