Real time surveying while drilling in a roll-stabilized housing
US11898432B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 22, 2020 |
| Grant date | Feb 13, 2024 |
| Priority date | — |
| Expiry date | Jan 15, 2041 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/0228
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method for drilling a subterranean wellbore includes rotating a drill string in the wellbore to drill. The drill string includes a roll-stabilized housing deployed in a drill collar and survey sensors deployed in the roll-stabilized housing. Sensor measurements are acquired while the drill string is rotating. High bandwidth accelerometer measurements may be obtained by combining triaxial accelerometer measurements and gyroscopic sensor measurements. Survey parameters, including a wellbore azimuth, may be computed from the high bandwidth accelerometer measurements. Triaxial magnetometer measurements may be processed to compute an eddy current induced wellbore azimuth error which may be removed from a previously computed wellbore azimuth to obtain a corrected wellbore azimuth.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.