叠前深度偏移技术在工程勘察中的应用探讨
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摘要
本文通过叠前深度偏移与地震常规处理方法的实例分析,说明叠前深度偏移技术在求准速度的纵横向变化;提高复杂构造和小断层的成像清晰度和精度;正确速度-深度模型建立上有明显的优势。可直接、精确地给出地质层位深度等优点。说明叠前深度偏移技术在断层探测资料处理中有很好的应用效果,并可结合勘察对场地作出准确评价;证明该技术在工程勘察中有着广阔的应用前景
In this paper, according to the analysis of examples of depth-migration before stack technology and common earthquake processing methods, the conclusion indicates that the depth-migration before stack technology has great predominance in determining the longitudinal and transverse changes of velocities, improving the articulation and precision of imaging of complex structures and minor faults, properly establishing velocity-depth model. And the technology can be used to determine the depth of geological horizon directly and precisely. All of this proves the good application effects of the depth-migration before stack technology in the processing of the faults prospecting data. This technology, accompanied by the geotechnical investigation, can give the exact assessment for the construction site. All of the above shows that the technology has extensive application prospects in engineering prospecting.
In this paper, according to the analysis of examples of depth-migration before stack technology and common earthquake processing methods, the conclusion indicates that the depth-migration before stack technology has great predominance in determining the longitudinal and transverse changes of velocities, improving the articulation and precision of imaging of complex structures and minor faults, properly establishing velocity-depth model. And the technology can be used to determine the depth of geological horizon directly and precisely. All of this proves the good application effects of the depth-migration before stack technology in the processing of the faults prospecting data. This technology, accompanied by the geotechnical investigation, can give the exact assessment for the construction site. All of the above shows that the technology has extensive application prospects in engineering prospecting.
引文
[1]GeoDepthUser’sGuide.PARADIGM 地球物理公司.
[2]王有新,史正军,李少英.深度偏移的发展与应用概况.石油地球物理勘探,1994,29(4):526-530.
[3]王建立,李幼铭,冷传波等.二维叠前深度偏移及辅助处理流程方法研究[J].石油地球物理勘探,1999,34(增刊):1-12.
[4]傅长生,马秀兰,殷德智.叠前深度偏移技术研究进展.中国石油天然气总公司西北地质研究所,1996.
[5]李家蓉,蒋进勇,徐丽萍.二维叠前深度偏移技术在新疆塔北地区的应用.石油物探,1999,38(2):87-92.
[2]王有新,史正军,李少英.深度偏移的发展与应用概况.石油地球物理勘探,1994,29(4):526-530.
[3]王建立,李幼铭,冷传波等.二维叠前深度偏移及辅助处理流程方法研究[J].石油地球物理勘探,1999,34(增刊):1-12.
[4]傅长生,马秀兰,殷德智.叠前深度偏移技术研究进展.中国石油天然气总公司西北地质研究所,1996.
[5]李家蓉,蒋进勇,徐丽萍.二维叠前深度偏移技术在新疆塔北地区的应用.石油物探,1999,38(2):87-92.
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