Restorable antennae apparatus and system for well logging
US9213124B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Mar 22, 2013 |
| Grant date | Dec 15, 2015 |
| Priority date | — |
| Expiry date | Apr 16, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49018
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.