Monitoring drilling performance in a sub-based unit
US8376065B2 · kind B2 · utility
47Cited by
60References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 14, 2009 |
| Grant date | Feb 19, 2013 |
| Priority date | — |
| Expiry date | Oct 19, 2030 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/017
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
In one aspect, a removable module or sub is provided for use in drilling a wellbore, which sub in one embodiment may include a body having a pin end and a box end configured for coupling between two members of a drill string, the body having a bore therethrough for flow of a fluid, and a sensor disposed in a pressure-sealed chamber in one of the pin end and the box end and configured to provide measurements relating to a downhole condition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.