永新地区近地表校正方法

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摘要高精度地震勘探中的资料成像质量依赖于高精度的静校正方法。由于永新地区近地表速度结构相对复杂,使得该区地震资料的静校正问题相当突出。本文通过层析反演方法求取近地表速度模型,并用波动方程基准面静校正方法解决该区静校正问题。试验结果证明本方法能较好解决地表相对复杂、近地表速度(垂向梯度)变化较大情况下的静校正量计算问题。

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关键词 ：静校正, 近地表, 表层速度结构, 层析反演, 波动方程, 成像精度

Abstract：The data imaging quality in high-precision seismic exploration depends on high-precision static corrections method, Due to near-surface velocity structure is relative complex in Yongxin area, which made the issue of seismic data static corrections be more serious in the area. The paper acquired near-surface velocity model by tomographic inversion method and solved the issue of static corrections by wave equation datum static corrections. The experimental results showed that the method can better solve the issue of statics computation in a situation of relative complex surface and large variation of near-surface velocity (vertical gradient).

Key words： static corrections near surface near-surface velocity structure tomographic inversion wave equation imaging precision

收稿日期: 2008-03-06

P631.44

引用本文:

张海新, 丁伟, 刘秀玉, 王明星. 永新地区近地表校正方法[J]. 石油地球物理勘探, 2008, 43(增刊2): 63-66. Zhang Hai-xin, Ding Wei, Liu Xiu-yu, Wang Ming-xing. Near-surface correction method in Yongxin area. OGP, 2008, 43(增刊2): 63-66.

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http://www.ogp-cn.com/CN/ 或 http://www.ogp-cn.com/CN/Y2008/V43/I增刊2/63