发明名称 |
RESTORABLE ANTENNAE APPARATUS AND SYSTEM FOR WELL LOGGING |
摘要 |
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. A method includes securing an antennae case having a coil there within onto a sub, surrounding the coil with a metal sleeve shield, and radially receiving and securing a multi-piece sacrificial wear member intermediate the antennae case and a retainer ring having a threaded bore. The multi-piece sacrificial wear member is replaceable after use by unthreading the retainer ring to release the sacrificial wear member for radial removal from the sub. |
申请公布号 |
WO2014150361(A4) |
申请公布日期 |
2015.04.09 |
申请号 |
WO2014US23053 |
申请日期 |
2014.03.11 |
申请人 |
CHINA NATIONAL PETROLEUM CORPORATION;OLIDEN TECHNOLOGY, LLC |
发明人 |
OKONKWO, CHIDIEBELE, GABRIEL;LI, QIMING;LI, ANZONG;LI, CHUANWEI;ZHU, JUN |
分类号 |
G01V3/30;E21B47/01;G01V13/00 |
主分类号 |
G01V3/30 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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