Modular resistivity sensor for downhole measurement while drilling
US9638819B2 · kind B2 · utility
3Cited by
15References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 17, 2014 |
| Grant date | May 2, 2017 |
| Priority date | — |
| Expiry date | Sep 11, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V3/28
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A modular resistivity sensor disposable in a drillstring having a drill bit on a distal end for drilling a wellbore in a formation, includes a sensor body having a longitudinal axis radially offset from a longitudinal axis of the drillstring, one or more transmitting coil antennas disposed along a length of the sensor body, one or more receiving coil antennas disposed along a length of the sensor body, and a calibrating device configured to calibrate signals generated from the receiving coil antennas.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.