Bottom hole drilling assembly
US5394951A · kind A · utility
94Cited by
15References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 13, 1993 |
| Grant date | Mar 7, 1995 |
| Priority date | — |
| Expiry date | Dec 13, 2013 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B19/22
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A bottom hole drilling assembly connectable to coiled tubing comprises a downhole motor to rotate a drill bit, articulated sub for causing the drill bit to drill a curved bore hole when a second portion thereof is bent from coaxial orientation with a first portion, steering tool for indicating the attitude of the bore hole, thruster for providing force to advance the drill bit, and orientating tool for rotating the thruster relative to the coiled tubing to control the path of the bore hole.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.