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| 径向非均匀介质中的电磁测井响应 | |
| 引用本文： | 宋汐瑾,任志平,杨阳. 径向非均匀介质中的电磁测井响应[J]. 西安石油大学学报(自然科学版), 2010, 25(1) |
| 作者姓名： | 宋汐瑾 任志平 杨阳 |
| 作者单位： | 西安石油大学,光电油气测井与检测教育部重点实验室,陕西,西安,710065 |
| 基金项目： | 国家863项目，西安石油大学科技创新基金 |
| 摘 要： | 通过求解圆柱坐标系中电场强度的赫姆霍兹方程,导出了径向非均匀介质中电磁测井的响应函数的一般表达式.数值计算结果表明,套管厚度的微小变化对电磁测井响应影响明显.不同电导率金属套管的电磁测井响应分析表明,套管电导率越高,接收线圈上的电场响应幅度越小.讨论了套管磁导率变化的电磁测井响应特征,结果表明:套管磁导率越高,电磁波信号越难穿过套管,响应信号幅度越小.因此,在套管井电磁测井技术中,应尽量选用非磁性或弱磁性套管. |
| 关 键 词： | 电磁测井 非均匀介质 金属套管 磁导率 电导率 |
Electromagnetic logging response in radial heterogeneous media |
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| SONG Xi-jin,REN Zhi-ping,YANG Yang. Electromagnetic logging response in radial heterogeneous media[J]. Journal of Xian Shiyou University, 2010, 25(1) | |
| Authors: | SONG Xi-jin REN Zhi-ping YANG Yang |
| Affiliation: | SONG Xi-jin,REN Zhi-ping,YANG Yang (Key Laboratory of Education Ministry for Photoelectric Logging , Detecting of Oil , Gas,Xi'an Shiyou University,Xi'an 710065,Shaanxi,China) |
| Abstract: | The general expressions of the electromagnetic logging response functions of in radial heterogeneous media are deduced by solving the Helmholtz equation of electric field intensity in cylindrical coordinate system.And the effects of the casing thickness on electromagnetic logging responses are analyzed.The computation results show that the little change of the casing thickness will produce an obvious effect on the logging responses.The numerical results of the casing pipe of different electrical conductivit... |
| Keywords: | electromagnetic logging response heterogeneous media metal casing magnetic permeability electrical conductivity |
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