Application of Static Correction Method in Complex Mountain Area
详细信息
- 责任者：Wei An (School of Ocean Sciences ; China University of Geosciences ; Beijing 100083 ; China) ; Li Qi
- 刊名：Journal of Guilin University of Technology
- 出版年：2013
- 卷期：33(1)
- 关键词：静校正 ; static correction ; 碳酸盐岩 ; carbonate rocks ; 广西 ; Guangxi Province
- 页码：p.50-55
- 图表：illus., 7 refs.
- 分类号：1600
- issnNo：ISSN1674-9057
- isbnNo：CN45-1375/N
摘要
Guizhong sag is characterized by rugged topography,karst cave and complex subsurface structure which result in major changes in thickness of near-surface layer and lateral velocity.This geological conditions seriously distort static correction.Based on seismic data of this region,features and applicable circumstances of elevation statics,refraction statics and tomographic statics are discussed.A thorough analysis is conducted on geological conditions and a method of combination statics process is presented.A specific statics processing work flow is made.If field investigating data such as short-refraction and micro logging is inadequate,refraction method can be applied to obtain initial velocity model.Then first-break information of different waves is used to modify the forward and inverse iteration model to achieve required accuracy and compute the statics.Application results demonstrate that this process outperforms conventional ones.
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