浅层地震资料处理方法
|
摘要
针对浅层地震反射信号具有反射系数随入射角变化大,受震源因素、初至影响大,面波干扰严重,对速度敏感以及动校正拉伸畸变严重等特点,进行了叠前去噪、拉伸畸变切除及反射系数畸变切除、静校正、浅层偏移成像等方法的研究,并在实际资料处理中见到了明显的效果。
In shallow layers,seismic-reflection signal is characterized by big effect on reflection coefficient along with the variation of arrival angle,large influence from first arrival and source factors,serious surface-wave interference,being sensitive to velocity,and severely anomalous stretch of normal moveout.So,many methods are studied,including pre-stacking denoise,eliminating anomalous stretch and reflection-coefficient distortion,static correction,and migration imaging.These methods are applied to seismic-data processing and an obvious effect can be obtained.
In shallow layers,seismic-reflection signal is characterized by big effect on reflection coefficient along with the variation of arrival angle,large influence from first arrival and source factors,serious surface-wave interference,being sensitive to velocity,and severely anomalous stretch of normal moveout.So,many methods are studied,including pre-stacking denoise,eliminating anomalous stretch and reflection-coefficient distortion,static correction,and migration imaging.These methods are applied to seismic-data processing and an obvious effect can be obtained.
引文
1王长春,熊金良.浅层多次折射发育机理与地震资料采集方法探讨[J].石油地球物理勘探2001,36(03):364-370.
2胡天跃,地震资料叠前去噪技术的现状与未来[J].地球物理学进展,2002,17(2):218-223.
3夏洪瑞,周开明.地震资料处理中相干干扰消除方法分析[J].石油物探,2003,42(2):526-528.
4张立,龚立,肖敏.CXZ地区浅层地震资料处理实例[J].石油物探,2002,41(04):479-483.
5刘治凡,毛海波,邵雨,等.复杂地表区基准面和静校正方法的选择[J].石油物探,2003,42(2):240-247.
6王彦春,余钦范.交互迭代折射静校正方法[J].石油物探,1998,37(2):63-70.
7方伍宝.地震偏移问题及其解决方案[J].勘探地球物理进展,2002,25(2):44-60.
2胡天跃,地震资料叠前去噪技术的现状与未来[J].地球物理学进展,2002,17(2):218-223.
3夏洪瑞,周开明.地震资料处理中相干干扰消除方法分析[J].石油物探,2003,42(2):526-528.
4张立,龚立,肖敏.CXZ地区浅层地震资料处理实例[J].石油物探,2002,41(04):479-483.
5刘治凡,毛海波,邵雨,等.复杂地表区基准面和静校正方法的选择[J].石油物探,2003,42(2):240-247.
6王彦春,余钦范.交互迭代折射静校正方法[J].石油物探,1998,37(2):63-70.
7方伍宝.地震偏移问题及其解决方案[J].勘探地球物理进展,2002,25(2):44-60.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心