A Study of Least-Squares Migration Imaging Method for Fractured-Type Carbonate Reservoir
详细信息
- 责任者：Huang Jianping (Department of Geophysics ; School of Geosciences ; China University of Petroleum ; Qingdao 266555 ; China) ; Li Zhenchun
- 刊名：Chinese Journal of Geophysics
- 出版年：2013
- 卷期：56(5)
- 关键词：碳酸盐岩储集层 ; carbonate reservoirs ; 地震勘探 ; seismic exploration
- 页码：p.1716-1725
- 图表：illus., 43 refs.
- 分类号：1600
- issnNo：ISSN0001-5733
- isbnNo：CN11-2074/P
摘要
As an important type of marine oil-gas reservoirs,especially in western exploration area,fractured carbonate reservoir often has many special features,including a fracture-cave formation,a deep buried depth,complex reflection wave components and difficult analysis of its wave field characteristics.Due to such features,it is difficult to image fractured-type carbonate reservoir with high-resolution.In this paper,the basic theory of least-squares migration(LSM) is deduced and then we implemented this migration approach.The imaging results of equivalent seismo-geological models of fractured carbonate reservoir have showed that LSM had a good resolution on 20-meter scale fractured carbonate reservoir with a depth of more than 3000 meters,and it is well adaptable when used to prospect fractured-type carbonate reservoir in the western exploration area.
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