| 沉积岩的速度、衰减与岩石物理性质间的关系 |
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| 引用本文： | 安勇,牟永光,方朝亮.沉积岩的速度、衰减与岩石物理性质间的关系[J].石油地球物理勘探,2006,41(2):188-192. |
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| 作者姓名： | 安勇 牟永光 方朝亮 |
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| 作者单位： | 中科院地质与地球物理研究所，中国石油大学，CNPC科技发展部 北京市昌平区中国石油大学资源与信息学院102249，北京 |
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| 摘 要： | 本文用Toksoz等人提出的频谱振幅法对砂、泥岩样品的纵、横波速度(vP、vS)及其品质因子(QP、QS)进行了实验室测试,得到以下结论:对于干燥岩石,衰减与频率无关,且纵、横波速度之间存在着强相关性;纵波速度和纵波品质因子呈弱相关性,横波速度与横波品质因子呈强相关性;纵波品质因子与横波品质因子呈强相关性;孔隙率与纵、横波速度有线性关系;岩石的衰减受岩性的影响,泥岩的衰减大干砂岩的衰减,含砾砂岩衰减大干不含砾砂岩。
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| 关 键 词： | 岩石物理性质 频谱振幅法 速度 衰减 品质因子 纵波 横波 |
| 收稿时间： | 2005-06-24 |
| 修稿时间： | 2005-06-24 |
Relationship between attenuation, velocity of sedimentary rocks and petrophysical property. |
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| An Yong,Mu Yong-guang and Fang Chao-liang. College of Resource and Information,China University of Petroleum,Changping District,Beijing City,China.Relationship between attenuation, velocity of sedimentary rocks and petrophysical property.[J].Oil Geophysical Prospecting,2006,41(2):188-192. |
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| Authors: | An Yong Mu Yong-guang and Fang Chao-liang College of Resource and Information China University of Petroleum Changping District Beijing City China |
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| Affiliation: | An Yong,Mu Yong-guang and Fang Chao-liang. College of Resource and Information,China University of Petroleum,Changping District,Beijing City,102249,China |
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| Abstract: | The paper uses frequency-amplitude ratio method presented by Mr. Toksoz et al for laboratory test of velocities (VP, VS) and quality factors (QP, QS) of P- and S-waves in sandstone and mud-stone samples and obtained following conclusions: the attenuation is irrelative to frequency and there is strong correlation between P-wave velocity and S-wave velocity for dry rocks ; the P-wave velocity is weak correlative to P-wave quality factor and S-wave velocity is strong correlative to S-wave quality factor; P-wave quality factor is strong correlative to S-wave quality factor; porosity is linear with P- and S-waves velocities; the attenuation of rocks comes under the influence of lithology, the attenuation of mudstone is greater than that of sandstone and gravel-packing sand is greater than that without gravel pack. |
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| Keywords: | petrophysical property frequency-amplitude ratio method velocity attenuation quality factor P-wave S-wave |
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