[1]商乃德.时移双曲方程速度分析原理及应用[J].复杂油气藏,2015,(04):31.
　Shang Naide.Principle of velocity analysis for time-shifting hyperbolic equation and its application[J].Complex Hydrocarbon Reservoirs,2015,(04):31.
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时移双曲方程速度分析原理及应用
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《复杂油气藏》[ISSN:1674-4667/CN:31-2019/TQ]

卷:
期数:
2015年04期
页码:
31
栏目:
油气勘探
出版日期:
2015-12-25

文章信息/Info

Title:
Principle of velocity analysis for time-shifting hyperbolic equation and its application
作者:
商乃德
中国海洋石油能源发展股份有限公司,北京 100027
Author(s):
Shang Naide
Energy Development Ltd Co.,CNOOC,Beijing 100027,China
关键词:
垂向对称轴横向各向同性(VTI)介质 时移双曲线 叠前时间偏移 各向异性速度分析
Keywords:
vertical transverse isotropic(VTI)medium;  shift hyperbolic curve;  pre-stack time migration;  anisotropy velocity analysis
分类号:
P631.4
文献标志码:
A
摘要:
针对时移双曲线NMO方程的非椭圆特性,研究时移参数和非椭圆参数之间的关系,引入了局部坐标系中能描述反射双曲线形状的两个约束参数,推导出相关计算公式。建立了各向异性速度分析处理流程,解决了远炮检距动校道集无法校平的问题,提高了叠前时间偏移的成像精度。通过不同实例证实了该方法能够有效解决远炮检距情况下反射波准确归位的问题。
Abstract:
According to nonelliptic features of time-shifting hyperbolic NMO equation,it was carried out the relationship between time-shifting and nonelliptic parameters.By introducing two constrained parameters,which can describe shape of reflected hyperbolic curve in local coordinate system,the correlation calculation formulas were derived.A processing flow of anisotropic velocity analysis was established,which solves the problem of NMO abnormality of far offset data set and improves the imaging accuracy of the previous time offset.Different cases indicated that this method can effectively solve the problem of accurate homing of reflected wave under the condition of far offset.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2015-07-21; 改回日期:2015-10-17。
作者简介:商乃德(1967—),工程师,主要从事勘探方法研究及其市场开发工作。电话:010-84528239,E-mail:shangnd@cnooc.com.cn。
doi:10.16181/j.cnki.fzyqc.2015.04.007
更新日期/Last Update: 2015-12-25