Reducing error contributions to gyroscopic measurements from a wellbore survey system
US8374793B2 · kind B2 · utility
6Cited by
73References
28Claims
0Family size
Assignee
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Key dates
| Filing date | Sep 23, 2011 |
| Grant date | Feb 12, 2013 |
| Priority date | — |
| Expiry date | Sep 23, 2031 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/022
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method reduces error contributions to gyroscopic measurements from a first gyroscopic sensor and a second gyroscopic sensor. The method includes receiving a first set of measurement signals and a second set of measurement signals indicative of at least one substantially perpendicular component and indicative of a substantially parallel component of the Earth's rotation. The method further includes receiving one or more measurement signals generated by a plurality of accelerometers and calculating a first and second mass unbalance offset error for the first gyroscopic sensor and the second gyroscopic sensor, respectively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.