| 由声测井资料计算反射系数序列中多分辨逼近的选择 |
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| 引用本文： | 陈文超,王松练.由声测井资料计算反射系数序列中多分辨逼近的选择[J].地球物理学进展,2000,15(4):79-86. |
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| 作者姓名： | 陈文超 王松练 |
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| 作者单位： | [1]西北工业大学电子与信息工程学院11系,西安 [2]长庆石油勘探局科技处,西安 |
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| 基金项目： | 国家自然科学基金项目! (6 98310 2 0 ) |
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| 摘 要： | 介绍了由声测井资料计算反射系数序列中的多分辨率逼近理论，详细分析了由高分辨率的声测井资料计算低分辨率的反射系数序列的地质要求，进而在理论上讨论了此类问题中多分辨逼近的选择，并比较了由Ｈａａｒ系与由三次样条函数构造的多分辨率逼近这两种典型的多分辨逼近。最后利用理论模型及实际资料算例验证了选择恰当的多分辨率逼近在解决这类问题中的有效性。
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| 关 键 词： | 多分辨率逼近 声测井资料 反射系数序列 地震 |
CHOOSING THE MULTIRESOLUTION APPROXIMATIONS IN CALCULATING REFLECTION COEFFICIENTS FROM WELL LOGS |
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| CHEN Wen chao,WANG Song lian,GAO Jing huai,WANG Wen bing.CHOOSING THE MULTIRESOLUTION APPROXIMATIONS IN CALCULATING REFLECTION COEFFICIENTS FROM WELL LOGS[J].Progress in Geophysics,2000,15(4):79-86. |
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| Authors: | CHEN Wen chao WANG Song lian GAO Jing huai WANG Wen bing |
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| Institution: | CHEN Wen chao 1 WANG Song lian 2 GAO Jing huai 3 WANG Wen bing 3 |
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| Abstract: | After a brief review of the MRA(multiresolution approximation) technique for calculating primary reflection coefficients from well logs. The geologic demand of the primary coeffients calculated from well logs is analyzed in detailed, and then the choice of MRA is studied. The effectiveness of the suitable choice of the MRA is verified via both theoretical modeling and two sonic logs from wells, the two wells being unrelated to each other. Comparison the MRA based on Haar function with the MRA based on cubic splines shows that the former choice is the suitable choice for these issues. |
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| Keywords: | Multiresolution approximation(MRA) Well logs Best approximation |
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