摘要
通过对天然岩芯及人工岩芯的测量,研究240kHz-1.SMHz频段内的声频散、温度对岩石声速的影响、岩石含水饱和度对岩石声速和声衰减的影响,给出岩石中声衰减与声波频率间关系的最佳拟合,并讨论了裂缝对岩石中声波传播的影响。
The measurement of acoustic parameters of rocks is the basic work for the explanation of sonic well logs. By sonic measurements of cores, this paper investigates acoustic velocity dispersion in the frequency band from 240kHz to 1.5MHz,the effect of temperature on cores' velocity, the effect of water saturability on cores'velocity and attenuation, the best fit of the relationship between the attenuation and frequency, and the effect of cracks on the propagation feature of ultrasonic wavesin rocks.
出处
《地球物理学报》
SCIE
EI
CSCD
北大核心
1994年第5期659-666,共8页
Chinese Journal of Geophysics
基金
国家自然科学基金委员会
中国科学院
中国石油天然气总公司
大庆石油管理局联合资助
关键词
岩石
声衰减
实验研究
声速参数
Rocks
Sonic velocity
Sonic attenuation
Experimental study.