摘要
专利申请号: US201415519765 公开号: US10145232B2 申请日: 2014.11.18 公开日: 2018.12.04 申请人: HALLIBURTON ENERGY SERVICES INC;Disclosed embodiments include methods and apparatus for ranging techniques to detect and determine a relative distance and azimuthal direction of nearby target well conductors such as pipes, well casing, etc., from within a borehole of a drilling well. A nearby casing string of a target well can be detected by transmitting an electromagnetic signal from an excitation source located along the target well and measuring a response signal with an antenna on a downhole logging tool in the drilling well. Several different excitation sources for various target wells are utilized to distinguish nearby conductor signals from formation signals.
出处
《国外测井技术》
2019年第2期9-9,32,59,65,70,79,共6页
World Well Logging Technology
