Method and apparatus for initialization of a wellbore survey tool via a remote reference source
US8294592B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 28, 2012 |
| Grant date | Oct 23, 2012 |
| Priority date | — |
| Expiry date | Feb 28, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F17/00
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method and an apparatus are provided for determining an orientation of a wellbore survey tool at a first position with respect to a reference direction. At least one first signal is indicative of an orientation of a directional reference system with respect to the reference direction. The directional reference system is positioned at a second position spaced from the first position. At least one second signal is indicative of a relative orientation of the wellbore survey tool with respect to the directional reference system. The orientation of the wellbore survey tool at the first position is determined in response at least in part to the at least one first signal and the at least one second signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.