Application Analysis of Constrained Tomographic Static Correction Technique
详细信息
- 责任者：Wang Shuling (Institute of Geology and Geophysics ; China Academy of Sciences ; Beijing 100029 ; China)
- 刊名：Geophysical Prospecting for Petroleum
- 出版年：2012
- 卷期：51(4)
- 关键词：静校正 ; static correction ; 层析技术 ; tomography
- 页码：p.383-387
- 图表：2 illus., 17 refs.
- 分类号：1600
- issnNo：ISSN1000-1441
- isbnNo：CN32-1284/TE
摘要
The assumption of refraction static correction indicates that it cannot be applied in the area with complex surface structures.On the contrary,constrained tomographic static correction is suitable for the lateral and vertical variation of the velocity of weathering layer,as well as the poor layering of near surface.After briefly analyzing the inadaptability of refraction static correction in the area with complex near-surface structures,the basic principles and steps of constrained tomography static correction was described.Then the constrained tomography static correction was applied in the western area with complex near-surface structures.In addition,the difference of near-surface velocity modeling and static correction by tomography inversion with and without constrained conditions,and the constrained tomography static correction shows obvious advantage in complex near-surface area.
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