摘要：專利申請(qǐng)?zhí)?EP18182195申請(qǐng)日:2014.03.11公開號(hào):EP3404451A1公開日:2018.11.21申請(qǐng)人:CHINA NAT PETROLEUM CORP;OLIDEN TECH LLC;An apparatus includes a sub with recesses along an exterior wall to receive inserts, an antennae case including a coil surrounded by a sacrificial wear portion of a material through which signals between the coil and a formation of interest may pass. An eroded outer wall of the sacrificial wear portion is restorable by application of an uncured restorative material to the antennae case.