中国石油大学学报（自然科学版）2018，Vol.42Issue(1)：67-72,6.DOI:10.3969/j.issn.1673-5005.2018.01.008
井周界面电磁散射探测数值模拟
Numerical simulation of electromagnetic scattering of interface around borehole
摘要
Abstract
The response to the interface is numerically simulated based on the electromagnetic scattering theory. Putting sym-metrically the receiving antenna on two sides of the transmitting antenna,the scattered signal off the interface can be reflected by the difference of receiving signals. The electromagnetic responses to the bed boundary were analyzed at different frequen-cies,distances of antenna and resistivity contrast ratios of two sides'formations. The results show that electromagnetic scat-tering measurements can reach deeper sensitivity than most current tools. The contrast ratio of the formation resistivity deter-mines the signal strength. The sensitivity depth becomes larger with increasing resistivity contrasts. A cross plot can be drawn to show the signal magnitude difference between the coaxial and tilt antenna,which can be easily used to determine the posi-tion of formation interfaces.关键词
电磁波测井/地层界面/幅度差/探测深度/对称分布Key words
electromagnetic logging/formation boundary/magnitude difference/detection depth/symmetrical antenna struc-ture分类
天文与地球科学引用本文复制引用
邓少贵,张盼,王正楷,袁习勇..井周界面电磁散射探测数值模拟[J].中国石油大学学报（自然科学版）,2018,42(1):67-72,6.基金项目
国家自然科学基金项目(41574118,41174099,41674131) （41574118,41174099,41674131）
国家科技重大专项(2017ZX05009-001) （2017ZX05009-001）
中国石油科技创新基金项目(2015D-5006-0303) （2015D-5006-0303）
中央高校基本科研业务费专项(17CX06044) （17CX06044）
