井间地震层析成像技术的应用
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摘要
阐述了井间地震层析成像的正反演技术——基于最短路径法的射线追踪正演技术和基于LSQR算法的反演技术的原理,并且通过数值模型对正反演算法进行了较细致的研究,重建了地下构造原像,效果较好。结合工程应用实例,进一步表明井间地震层析成像技术能够更清晰、更客观地反映出地下构造情况,为地质结构研究和后期施工提供更详实的资料。最后,对层析成像的分辨率进行了探讨,指出了层析成像质量的影响因素。
This paper explains the forward and inversion methods,which include ray-tracing based on the shortest path ray-tracing method and inversion calculation based on LSQR.The authors made detailed researches on the two algorithms,rebuilt the original image of underground structures,with fairly good effect obtained.Exemplified by engineering application,the results indicate that cross-hole seismic tomography can reflect underground conditions and also provide more concrete data for the study of geological structure and final-period construction.The resolution of the cross-hole seismic tomography is discussed,and the factors affecting the image quality are indicated.
This paper explains the forward and inversion methods,which include ray-tracing based on the shortest path ray-tracing method and inversion calculation based on LSQR.The authors made detailed researches on the two algorithms,rebuilt the original image of underground structures,with fairly good effect obtained.Exemplified by engineering application,the results indicate that cross-hole seismic tomography can reflect underground conditions and also provide more concrete data for the study of geological structure and final-period construction.The resolution of the cross-hole seismic tomography is discussed,and the factors affecting the image quality are indicated.
引文
[1]陈国金,曹辉,吴永栓.最短路径层析成像技术在井间地震中的应用[J].石油物探,2004,43(4):327-330.
[2]张云姝,顾汉明,师学明.基于MOSER曲射线追踪的SIRT声波层析成像[J].工程地球物理学报,2005,2(3):167-176.
[3]Moser T J.Shortest path calcu lation of seismic[J].Geophysics,1991,56(1):59-67.
[4]杨薇,刘四新.基于弯曲射线的跨孔层析成像算法研究[D].长春:吉林大学,2008.
[5]杨文采,杜剑渊.层析成像新算法及其在工程检测上的应用[J].地球物理学报,1994,37(2):239-244.
[6]裴正林,余钦范,狄帮让.井间地震层析成像分辨率研究[J].物探与化探,2002,26(3):218-224.
[7]成谷,马在田,张宝金.地震层析成像中存在的主要问题及应对策略[J].地球物理学进展,2003,18(3):512-518.
[8]陈益杰.声波CT在基桩检测及桩基勘测中的应用[J].物探与化探,2008,32(3):338-340.
[9]苏建坤,渠文平,孙锐.声波CT技术在旧桥病害诊断中的应用[J].物探与化探,2009,33(3):354-357.
[10]邓业灿,李毅臻,严大千,等.旧桥基础桩弹性波层析成像检测方法技术[J].物探与化探,2010,34(3):407-409.
[2]张云姝,顾汉明,师学明.基于MOSER曲射线追踪的SIRT声波层析成像[J].工程地球物理学报,2005,2(3):167-176.
[3]Moser T J.Shortest path calcu lation of seismic[J].Geophysics,1991,56(1):59-67.
[4]杨薇,刘四新.基于弯曲射线的跨孔层析成像算法研究[D].长春:吉林大学,2008.
[5]杨文采,杜剑渊.层析成像新算法及其在工程检测上的应用[J].地球物理学报,1994,37(2):239-244.
[6]裴正林,余钦范,狄帮让.井间地震层析成像分辨率研究[J].物探与化探,2002,26(3):218-224.
[7]成谷,马在田,张宝金.地震层析成像中存在的主要问题及应对策略[J].地球物理学进展,2003,18(3):512-518.
[8]陈益杰.声波CT在基桩检测及桩基勘测中的应用[J].物探与化探,2008,32(3):338-340.
[9]苏建坤,渠文平,孙锐.声波CT技术在旧桥病害诊断中的应用[J].物探与化探,2009,33(3):354-357.
[10]邓业灿,李毅臻,严大千,等.旧桥基础桩弹性波层析成像检测方法技术[J].物探与化探,2010,34(3):407-409.
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