| 岩石的纵、横波速度与密度的规律研究 |
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| 引用本文： | 马中高,解吉高.岩石的纵、横波速度与密度的规律研究[J].地球物理学进展,2005,20(4):905-910. |
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| 作者姓名： | 马中高 解吉高 |
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| 作者单位： | 成都理工大学,成都,610059;中国石化石油勘探开发研究院南京石油物探研究所,南京,210014;中国石化石油勘探开发研究院南京石油物探研究所,南京,210014 |
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| 基金项目： | 中国石油化工股份有限公司资助项目 |
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| 摘 要： | 选择了济阳坳陷第三系地层四类不同岩性、237块典型岩心样品，在变温变压条件下进行超声波纵、横波速度及密度的测定，样品的孔隙度范围从2％到27％.根据变温变压测试数据，得出纵横波速度的压力、温度校正公式，将高温高压条件下测量的弹性参数校正到60 MPa条件，再进行密度、Vp和Vs数据分析.分析结果表明：Vp、Vs具有很好的线性相关性，得到新的密度与Vp关系式.同时将Vp、Vs关系融入到Gardner公式中，将Gardner函数推广为〖JP2〗ρ=CVApVBs的函数形式（称为广义Gardner公式），拟合出砂岩的密度、Vp和Vs间的新关系式：ρ=1.575 8V0.287 9pV0.019 7s.〖JP〗文中讨论了该公式在横波速度预测、岩石物理模拟和AVO正反演等的作用，指出这些规律性认识可服务于油气勘探和开发.
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| 关 键 词： | 高温高压 密度 纵波速度 横波速度 Gardner公式 回归分析 |
| 文章编号： | 1004-2903（2005）04-0905-06 |
| 收稿时间： | 2005-01-30 |
| 修稿时间： | 2005-03-10 |
Relationship among conpressional wave, shear wave velocities and density in rocks |
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| MA Zhong-gao,XIE Jie-gao.Relationship among conpressional wave, shear wave velocities and density in rocks[J].Progress in Geophysics,2005,20(4):905-910. |
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| Authors: | MA Zhong-gao XIE Jie-gao |
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| Institution: | 1. Chengdu University of Technology, Chengdu 610059,China ; 2 Institute of Geophysical Prospecting, SINOPEC, Nanjing 210014,China |
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| Abstract: | The ultrasonic compressional and shear wave velocities in rock that is under various temperature and pressure conditions and density were measured in laboratory on 237 samples to be belonged four different lithologies from Tertiary formation in the Jiyang Sag, with porosities from 2 to 27 percent. The relationship of compressional and shear velocities and the pressure and the temperature is obtained according to the data meassured on the condition of different temperatures and pressures, then the measured elastic parameters under the condition of high temperature and pressure are converted into thoses on the 60 Mpa in pressure, finally the relationship of density, Vp and Vs data is analysed. Our laboratory data show that Vs is linearly related to Vp, and we obtain the relationship between density and Vp. In the meantime the relationship between Vp and Vs is incorporated Gardner's relation, Gardner's relation is generalized to ρ=CVApVBs(called generalized Gardner relation). The new relationship among density, Vp and Vs isρ= 1.575 8V0.2879pV0.0197s. In the paper having discussed, the function of this new relation in Vs prediction, rock physics modeling and AVO forward and inversion et al., then pointed out these rule can serve as oil exploration and exploitation. |
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| Keywords: | high temperature and high pressure density compressional velocity shear velocity gardner relation re-gression analysis |
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