Intelligent reamer for rotary/sliding drilling system and method
US9879518B2 · kind B2 · utility
2Cited by
14References
14Claims
0Family size
Inventor
Key dates
| Filing date | Oct 3, 2014 |
| Grant date | Jan 30, 2018 |
| Priority date | — |
| Expiry date | Dec 11, 2035 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B10/32
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A downhole intelligent reamer controller detects the difference between rotary drilling and sliding drilling, responds appropriately and quickly to multiple changes between rotary drilling and sliding drilling that may occur several times each stand of pipe. Additional controls prevent deployment of reamer members at inappropriate times such as when drilling out cement, testing, and running in and out of the wellbore. In one embodiment, a separate modular control sub is disclosed that may be utilized with and/or removably secured to an expandable reamer and/or other types of downhole tools.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.