| 利用速度谱计算层速度的基本原理及其应用 |
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| 引用本文： | 朱筱敏,信荃麟,赵景龙.利用速度谱计算层速度的基本原理及其应用[J].中国石油大学学报(自然科学版),1990(1). |
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| 作者姓名： | 朱筱敏 信荃麟 赵景龙 |
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| 作者单位： | 石油大学盆地分析研究室
(朱筱敏，信荃麟)，石油大学海洋勘探开发研究中心(赵景龙) |
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| 摘 要： | 本文介绍了利用速度谱计算层速度和求取砂岩含量的基本原理和方法。这种方法是通过解释地震剖面和速度谱,读取某层段顶底的迭加速度和地震波通过的时间。对迭加速度进行剖面平滑,经过倾角校正求取均方根速度。再求取平均层速度和相应层的中点深度,并对其进行平面平滑,制做出砂泥岩量板,求出砂岩含量。通过对层速度和砂岩含量进行解释,确定出地震相、层速度和砂岩含量与沉积相之间的关系。文中以辽东湾南部盆地为例,用该方法求取了东营组下段的层速度和砂岩含量,为把地震相转换成沉积相提供了定量依据。
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| 关 键 词： | 速度谱 层速度 砂岩含量 计算方法 |
APPLICATION OF INTERVAL VELOCITY CALCULATED BY VELOCITY SPECTRUM FOR PRIDICTING LITHOLOGY |
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| Zhu Xiaomin Xin Quanlin Zhao Jinglong.APPLICATION OF INTERVAL VELOCITY CALCULATED BY VELOCITY SPECTRUM FOR PRIDICTING LITHOLOGY[J].Journal of China University of Petroleum,1990(1). |
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| Authors: | Zhu Xiaomin Xin Quanlin Zhao Jinglong |
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| Institution: | Dept. of Petroleum Exploration |
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| Abstract: | This paper introduces the procedure of calculating interval velocity and sandstone percent by use of velocity spectrum. The southern basin in Liaodong Bay is taken as an example of calculating interval velocity and sandstone percentage in the lower part of Dongying formation to provide the quantitative basis of transforming seismic facies into sedimentary facies. It is demonstrated practically that the calculation of interval velocity and sandstone percentage is an important part of seismic stratigraphy, especially in the region with few wells. |
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| Keywords: | Veloity spectrum Interval velocity Sandstone content Calculation method |
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