储层温压条件下岩石的波速特性及变化规律  

Characteristics and Changes of Rock Acoustic Velocity Under the Temperature and Pressure of Natural Reservior

作　　者：李洁[1] 李书光[2] 

机构地区：[1]滨州学院物理与电子科学系,滨州256603 [2]中国石油大学(华东)物理科学与技术学院,青岛266555

出　　处：《工程地球物理学报》2009年第6期765-768,共4页Chinese Journal of Engineering Geophysics

摘　　要：岩石处在一定的地质环境中,其温度和压力条件对岩石声学性质具有重要的影响。本文以超声波实验方法作为主要研究手段,在储层温压条件下对岩石的纵波速度进行了测量,得出纵波速度随温度、压力的变化曲线和拟合公式,实验结果表明,纵波波速随压力的增大以对数形式增加,随温度的升高呈线性减小,并对不同温度和压力对岩石纵波速度的影响机理进行了剖析。Rock is located in the certain geological environment. Therefore, the conditions of temperature and pressure have an important influence on the acoustic properties. In this paper, ultrasonic wave experiment is used as main researching tools, the velocity in rock that is under the temperature and pressure conditions of reservoir was measured in laboratory. The experiment resulted in the changing curves and fitting equations was verified. The study showed that the P- wave velocity increased logarithmically with pressure and decreased linearly with increased temperature, and the effecting mechanism of different temperature and pressure under deep conditions was studied.

关 键 词：波速 声学特性 温度 压力 

分 类 号：P631[天文地球—地质矿产勘探]