Seismic Q Estimation Using S-Transform with Regularized Inversion
详细信息
- 责任者：Liu Guochang (State Key Laboratory of Petroleum Resources and Prospecting ; China University of Petroleum ; Beijing 102249 ; China) ; Chen Xiaohong
- 刊名：Oil Geophysical Prospecting
- 出版年：2011
- 卷期：46(3)
- 关键词：地震勘探 ; seismic exploration ; Q值 ; Q value
- 页码：p.417-422
- 图表：9 illus., 23 refs.
- 分类号：1600
- 出版序号：1227
- issnNo：ISSN1000-7210
- isbnNo：CN13-1095/TE
摘要
The seismic quality factor Q is an important physical parameter in seismic exploration. In this paper, the authors present a novel method for Q estimate using S-transform with regularized inversion. The authors first use S-transform to obtain the amplitude spectrum at different given travel time. When using the spectral ratio method, the authors do the division with shaping regularization, which constrains the ratio to have a desired behavior, such as smoothness. It can avoids the instability of division, which might be caused by noise, interfering reflectors, windowing distorts, etc. The authors use synthetic examples and a field data example to verify the method. These examples show that this method can estimate Q in stable way and can obtain more precise Q value compared with conventional method.
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