VSP三分量资料合成的新方法
|
摘要
利用VSP三分量资料向其偏掘方向投影，提出一种新的合成方法．此法有三个步骤构成：（1）用模型计算每一道、每一个采样点所对应的反射角；（2）用三分量中两个水平分量的直达波振幅比先求取下行P渡的偏振角，然后经过时不变角度旋转求取合成后的水平分量；（3）用三分量资料的直达P波垂直分量和合成后的水平分量振幅比先求出直达P波的入射角，然后把三分量资料向直达P波偏损方向投影求得最佳下行波能量的WD记录，向上行P波偏振方向投影求得最佳上行P波能量的记录WU。以该方法编制的模块已在CYBER系统和PE3284的GOS系统上运行。经对三口井的实际VSP资料试处理，计算利表和处理结果均是正确的，使非零井源距资料的处理质量有了很大提高。
I put forward a new synthetic method by projecting VSP three-component datain the polarization directions. lt works in the following steps:. using the model to compute reflection angles corresponding to all samplingpoints on every trace to solving for the polarization angle of downgoing P-wave by using the ampli tude ratio between the direct waves from the two horizontal components. then to synthesize a new horizontal cbmponent by revolving the angle that isindependent of time to obtain the incident angle of direct P-wave by making use of the amplituderatio between the vertical component of the direct P-wave of three component dataand the synthesized horizontal component. to generate WD record 0f the optimal downgoing wave energy by projectingthe three-component data in direct P-wave polarization direction to create Wu record of the optimal upgoing P-wave energy by projecting inthe polarization direction of upgoing P-wave.The modules designed in this method have been nicely used in CYBER systemand PE3248-GOS system. Trial processing of VSP data at three boreholes broughtgood listing data and final results. This method greatly improves offset 'VSP dataprocessing.
I put forward a new synthetic method by projecting VSP three-component datain the polarization directions. lt works in the following steps:. using the model to compute reflection angles corresponding to all samplingpoints on every trace to solving for the polarization angle of downgoing P-wave by using the ampli tude ratio between the direct waves from the two horizontal components. then to synthesize a new horizontal cbmponent by revolving the angle that isindependent of time to obtain the incident angle of direct P-wave by making use of the amplituderatio between the vertical component of the direct P-wave of three component dataand the synthesized horizontal component. to generate WD record 0f the optimal downgoing wave energy by projectingthe three-component data in direct P-wave polarization direction to create Wu record of the optimal upgoing P-wave energy by projecting inthe polarization direction of upgoing P-wave.The modules designed in this method have been nicely used in CYBER systemand PE3248-GOS system. Trial processing of VSP data at three boreholes broughtgood listing data and final results. This method greatly improves offset 'VSP dataprocessing.
引文
1 Alam A,Tahseen M and Soufleris C.三分量VSP-CDP变换.第58届 SEG年会论文集,石油工业出版社, 1989
2朱光明.垂直地震剖面方法,石油工业出版社,1988
3 郅东彪.垂直地震剖面资料处理模型研究及波场分析技术.“七五”国家重点科技攻关项目成果报告,1990
4聂凯轩.VSP模型计算并绘制异性介质射线追踪图.GRI系统VSP资料处理模块设计书,1990
5 崔某泰 矢最合成模块设计.GRI 系统VSP资料处理模块设计书.1990
2朱光明.垂直地震剖面方法,石油工业出版社,1988
3 郅东彪.垂直地震剖面资料处理模型研究及波场分析技术.“七五”国家重点科技攻关项目成果报告,1990
4聂凯轩.VSP模型计算并绘制异性介质射线追踪图.GRI系统VSP资料处理模块设计书,1990
5 崔某泰 矢最合成模块设计.GRI 系统VSP资料处理模块设计书.1990
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