Autoreaming systems and methods
US7422076B2 · kind B2 · utility
11Cited by
36References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 31, 2006 |
| Grant date | Sep 9, 2008 |
| Priority date | — |
| Expiry date | Apr 19, 2027 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B44/02
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Methods and systems for controlling movement of a bit of a drilling assembly during reaming of an already-drilled hole; the methods, in certain aspects, including determining a ream speed for downward movement of the bit in the hole, moving the bit downward in a hole at the ream speed, determining a time period for deceleration of the bit to the hole bottom, determining a value for a target drilling parameter for drilling beyond the bottom of the hole, decelerating the bit (linearly or non-linearly) for the time period, and achieving the value for the target drilling parameter when the bit reaches the bottom of the hole.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.