首页 | 本学科首页   官方微博 | 高级检索  
     

转换波叠加速度分析及动校正
引用本文:刘军迎,雍学善,杨午阳,高建虎,翟瑞国. 转换波叠加速度分析及动校正[J]. 石油地球物理勘探, 2012, 0(2): 231-235,248,181
作者姓名:刘军迎  雍学善  杨午阳  高建虎  翟瑞国
作者单位:成都理工大学;中国石油天然气股份有限公司勘探开发研究院西北分院;中国石油天然气股份有限公司冀东油田分公司勘探处
摘    要:在P波勘探中,仅仅依据P波零炮检距旅行时(t0P)和非零炮检距(x0)信息分析P波叠加速度。与此类似,对于PS波地震资料,文中不引入任何各向异性参数,基于地层等效介质方法,推导出新的只包含PS波叠加速度、P波叠加速度的PS波时距曲线方程,使得PS波数据处理变得更为简单;同时,推导出了速度比分析方程,据此可在CMP道集数据中快速分析速度比,为共转点道集抽取提供较为准确的初始速度比参数。以上两个方法相互补充形成一个完整的方法系列,从而提高了整个转换波速度分析与共转换点道集生成的效率。通过模拟数据和实际数据的测试与验证,表明本文提出的转换波速度分析方法可为高精度PS波速度分析提供初始参数。

关 键 词:转换波  速度谱  速度分析  时距方程  动校正  叠加剖面

Converted-wave stacking velocity analysis & moveout correction
Liu Junying,Yong Xueshang,Yang Wuyang,Gao Jianhu,and Zhai Ruiguo. Converted-wave stacking velocity analysis & moveout correction[J]. Oil Geophysical Prospecting, 2012, 0(2): 231-235,248,181
Authors:Liu Junying  Yong Xueshang  Yang Wuyang  Gao Jianhu  and Zhai Ruiguo
Affiliation:1.Chengdu University of Technology,Chengdu,Sichuan 610059,China2.Northwest Branch,Research Institute of Petroleum Exploration & Development,PetroChina,Lanzhou,Gansu 730020,China3.Exploration Department,Jidong Oilfield Company,PetroChina,Tangshan,Hebei 063004,China
Abstract:We only rely on those messages of zero-offset travel time and nonzero-offset to estimate P-wave stacking velocity in oil seismic exploration.By analogy with that,for PS-wave seismic data,we derive in this paper a new time-distance equation of PS-wave based on the equivalent medium concept,which just includes the PS-wave stacking velocity and P-wave stacking velocity within the new equation.Thereby the processing of PS-wave data can be gotten simple.At the same time,we derive a velocity ratio equation.Then we can quickly analyze the velocity ratio based on the equation so that the initial velocity ratio parameter can be provided to extract a common-conversion-point(CCP) gather data.These two methods are so reciprocally compensative that they consist of methodologies which enhance efficiency of whole PS-wave velocity analysis and generation of CCP gather data.The test results on synthetic data and real data show that the method of PS-wave velocity analysis in this paper can provide initial parameters for high-precise PS-wave velocity analysis.
Keywords:converted-wave  velocity spectrum  velocity analysis  time-distance equation  NMO  stack section
本文献已被 CNKI 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号