Dual tractor drilling system
US7743849B2 · kind B2 · utility
19Cited by
8References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 15, 2005 |
| Grant date | Jun 29, 2010 |
| Priority date | — |
| Expiry date | Sep 23, 2026 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B23/001
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The invention provides a drilling system for use in a borehole through an underground formation, comprising:a drilling assembly including a drill bit for drilling through the formation and a drilling drive;conveyance means including a conveyance drive connected to the drilling assembly and operable to move the drilling assembly through the borehole,wherein the conveyance drive is operable to move the drilling assembly along the borehole into a drilling position and the drilling drive is operable to urge the drill bit into contact with the formation when drilling takes place in the drilling position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.