Antenna, tool, and methods for directional electromagnetic well logging
US11480705B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 23, 2013 |
| Grant date | Oct 25, 2022 |
| Priority date | — |
| Expiry date | Jun 24, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V3/28
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present disclosure describes various antenna assemblies, each antenna coil being disposed about a tool body section in an antenna pathway. The antenna pathway passes through alternating grooves and lands. In each embodiment, at least one of the grooves is disposed in the tool body section at a non-axial direction relative to the longitudinal axis of the tool body section. In an embodiment, the antenna coil is an axial coil or a tilted coil. Additional grooves oriented at axial direction may be disposed on the tool body section. Each of the antenna assemblies disclosed may be employed in an electromagnetic logging tool for providing directional measurements while drilling.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.