| 基于叠前波场模拟的合成地震记录层位标定 |
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| 引用本文： | 李国发,王尚旭,马彦彦. 基于叠前波场模拟的合成地震记录层位标定[J]. 中国石油大学学报(自然科学版), 2010, 34(1) |
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| 作者姓名： | 李国发 王尚旭 马彦彦 |
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| 作者单位： | 中国石油大学油气资源与探测国家重点实验室,北京,102249;中国石油大学中国石油天然气集团公司物探重点实验室,北京,102249 |
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| 基金项目： | 国家"973"重点基础研究发展计划项目，国家"863"高技术研究发展计划项目 |
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| 摘 要： | 常规合成地震记录层位标定方法没有考虑多次波和转换波以及处理过程对层位标定的影响.为减小合成地震记录与井旁地震道在波场特征上的差异,提高合成地震记录层位标定的精度,提出基于叠前波场模拟的合成地震记录层位标定方法:首先,利用常规方法进行测井曲线编辑和地震子波提取;第二,利用反射率法模拟井旁共反射点道集;第三,对模拟的共反射点道集进行正常时差校正和叠加;最后,以叠加道作为合成地震记录对地震反射进行层位标定.试验结果表明,此方法改善了合成地震记录与井旁地震道之间在地震反射上的一致性,提高了层位标定的可靠性.
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| 关 键 词： | 合成地震记录 层位标定 褶积模型 波场模拟 反射率法 多次波 |
Well-ties with log synthetic seismogram based on prestack wavefields simulation |
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| LI Guo-fa,WANG Shang-xu,MA Yan-yan. Well-ties with log synthetic seismogram based on prestack wavefields simulation[J]. Journal of China University of Petroleum (Edition of Natural Sciences), 2010, 34(1) |
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| Authors: | LI Guo-fa WANG Shang-xu MA Yan-yan |
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| Affiliation: | LI Guo-fa1,2,WANG Shang-xu1,MA Yan-yan1,2(1.State Key Laboratory of Petroleum Resource , Prospecting in China University of Petroleum,Beijing 102249,China,2.Key Laboratory of Geophysical Exploration of CNPC,China University of Petroleum,China) |
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| Abstract: | The effects of multiples,converted-waves and the processing procedure on well-ties were not taken into account in conventional well-ties method. In order to decrease the differences of wavefield characteristic between log synthetic seismogram and nearby-well seismic trace,and improve the reliability of well-ties,a new well-ties method based on prestack wavefield simulation was proposed. Firstly,the well log was edited and the wavelet was extracted by conventional method. Secondly,the common-reflection-point... |
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| Keywords: | synthetic seismogram well-ties convolution model wavefield simulation reflectivity method multiples |
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