The Integration for Processing and Interpretation of Sub-Salt Structure in Pre-Caspian Basin
详细信息
- 责任者：Yang Qinlin (College of Geophysics and Information Technology ; China University of Geosciences ; Beijing 100083 ; China) ; Wang Yanchun
- 刊名：Geophysical and Geochemical Exploration
- 出版年：2013
- 卷期：37(2)
- 关键词：盐下构造 ; subsalt structure ; 地震勘探 ; seismic exploration ; 里海 ; Caspian Sea
- 页码：p.323-327
- 图表：illus., 11 refs.
- 分类号：1600
- issnNo：ISSN1000-8918
- isbnNo：CN11-1906/P
摘要
There are salt domes of great thickness deposited in Pre-Caspian basin.As the salt layer thickness varies dramatically,it is difficult to perform imagery for the sub-salt seismic data,and the structure features show distortions.The elimination of the salt velocity influence and the restoration of the real sub-salt structure form constitute the urgent problems in oil-gas exploration.Through the integrated study of processing and interpretation,the authors used the floating datum pre-stack time migration method to conduct imagery for high and steep structures based on pre-stack fidelity of the static correction and to make salt amplitude recovery.Finally,the pre-stack reverse-time depth migration method was used for the sub-salt structure accurate imaging and recovery.A technological series of integration of processing and interpretation for sub-salt structure was formed and applied in Pre-Caspian salt basin.
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