Continuous wellbore drilling system with stationary sensor measurements
US6516898B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 4, 2000 |
| Grant date | Feb 11, 2003 |
| Priority date | — |
| Expiry date | Aug 4, 2020 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/01
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The present invention provides continuous or near continuous motion drill strings which include motion sensitive and other MWD sensors which take stationary measurements while the drilling assembly is continuing to drill the wellbore. For simultaneous continuous drilling and stationary measurements, the present invention provides a drilling assembly wherein a force application system almost-continuously applies force on the drill bit while maintaining a housing or drill collar section stationary. Motion sensitive sensors carried by the drill collar take stationary measurements. A steering device between the drill bit and the force application system maintains drilling of the wellbore along a prescribed well path.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.