Downhole instrument calibration during formation survey
US8528381B2 · kind B2 · utility
10Cited by
8References
35Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 13, 2009 |
| Grant date | Sep 10, 2013 |
| Priority date | — |
| Expiry date | Nov 13, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V13/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A downhole sensor calibration apparatus includes a rotational or gimbaling mechanism for guiding a sensing axis of an orientation responsive sensor through a three-dimensional orbit about three orthogonal axes. A method includes using measurements taken over the three-dimensional orbit to calibrate the sensor and determine other characteristics of the sensor or tool.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.