流体——固体弹性地层裸眼井声场的极点研究  

Investigation of the pole's in fluid-solid elastic layer borehole acoustic field

作　　者：刘伟[1] 张义德[2] 

机构地区：[1]华北电力大学数理系,保定071003 [2]哈尔滨工业大学航天科学与力学系,哈尔滨150001

出　　处：《黑龙江大学自然科学学报》2009年第5期696-700,共5页Journal of Natural Science of Heilongjiang University

基　　金：国家自然科学基金资助项目(10272038);华北电力大学青年教师基金资助项目(20041107)

摘　　要：准确求得声场函数的极点是声波测井波场分析的重要环节。针对流体-固体裸眼井声场模型,采用牛顿迭代法,计算了井孔声场频散方程的根。通过分析和对比,得出了该模型声场函数极点的变化规律,并给出了其极点实部的求解区域。It was important for analysis of the acoustic that the pole of acoustic funtion was calculated exactly. Aimed at the fluid-solid model, Newton iterative method was used to gain the root of the dispersion equation. With analysis and comparison, the changing law of the pole was found, and the existing region of the pole ＇s real part was given.

关 键 词：裸眼井 声场 极点 

分 类 号：O421[理学—声学]