石油物探2017，Vol.56Issue(2)：210-215,6.DOI:10.3969/j.issn.1000-1441.2017.02.007
一种改进的近地表强吸收补偿方法研究
An improved compensation method for near surface strong absorption
张文 1周志才 2于承业3
作者信息
- 1. 东北石油大学石油工程学院,黑龙江大庆163318
- 2. 大庆钻探工程公司,黑龙江大庆163412
- 3. 大庆勘探开发研究院,黑龙江大庆163712
- 折叠
摘要
Abstract
Strong absorption effect posed on seismic wavefield by near surface is very remarkable.Predecessors have developed many ways to reduce the impact and some good compensation effect has been found.If we directly apply the compensation formula which is suitable for solid rock to near surface directly,some technical problems exist,such as unreasonable compensation quantity distribution,difficult parameter optimization.Ideal compensation for near surface absorption can not be reached so far.On the basis of studying previous compensation technology for seismic absorption compensation technology,some existing problems of the original compensation method are analyzed.A correction factor is added in the compensation calculation formula,an improved compensation method for near surface strong absorption compensation method is proposed which are controlled by two factors,gain threshold and frequency threshold.The above existing problems in near surface absorption compensation mentioned above have been ameliorated.Seismic shot records with reasonable compensation for near surface absorption compensation is obtained,so the improved method can be widely used in the compensation processing for the near surface absorption.关键词
近地表/吸收衰减/Q补偿/低降速带/补偿因子Key words
near-surface/absorption and attenuation/Q compensation/low velocity zone/compensation factor分类
天文与地球科学引用本文复制引用
张文,周志才,于承业..一种改进的近地表强吸收补偿方法研究[J].石油物探,2017,56(2):210-215,6.
