Continuous circulation and communication drilling system
US9249648B2 · kind B2 · utility
0Cited by
31References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 6, 2013 |
| Grant date | Feb 2, 2016 |
| Priority date | — |
| Expiry date | Feb 11, 2034 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B21/106
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An apparatus for performing a wellbore operation includes a drill string having a rigid tubular section formed of a plurality of jointed tubulars and a plurality of valves positioned along the rigid tubular section. Each valve may have a radial valve controlling flow through a wall of the rigid tubular section and a signal relay device configured to convey information-encoded signals. Wellbore operations may be performed by transmitting signals using the signal relay devices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.