摘要
利用柱侧面对空间某点所张立体角的积分可转化为柱底面对空间某点所张立体角积分的结果 ,将电测井积分方程离散化。对包含奇异点在内的几个特殊点给出了柱底面对这些点所张立体角的值 ,并给出了电测井积分方程系数矩阵的计算方法。利用所得结果计算了双侧向测井仪的电极系系数 ,其结果与仪器标定值吻合得很好 ,相对误差在 2 %以内。
The conclusion that integration of solid angle for lateral surface of a cylinder can be turned into integration for bottom surface is applied to change the integral equation into discrete equation. A computing method of coefficient matrix is given. For a few special points including singular points, the numerical values of solid angle of a cylindrical bottom surface open to these special points. The computing methods of coefficient matrix are given. Using this method, the form factors of dual laterolog tool are computed. The calculation results are in conformity with the calibration values of the tool.
出处
《石油大学学报（自然科学版）》
EI
CSCD
北大核心
2001年第1期99-101,共3页
Journal of the University of Petroleum,China(Edition of Natural Science)
关键词
电测井
立体角
积分方程
椭圆积分
系数矩阵
计算方法
electric log
solid angle
integral equation
elliptic integration
coefficient matrix
