Borehole telemetry system
US9000942B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 13, 2006 |
| Grant date | Apr 7, 2015 |
| Priority date | — |
| Expiry date | May 30, 2031 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/135
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A telemetry apparatus and method for communicating data from a down-hole location through a borehole to the surface is described including a light source, an optical fiber being placed along the length of the wellbore and receiving light from the light source, a transducer located such as to produce a force field (e.g. a magnetic field) across the optical fiber and its protective hull without mechanical penetration of the hull at the down-hole location, one or more sensors for measuring down-hole conditions and/or parameters, a controller to provide a modulated signal to the magnetic field generator, said modulated signal being under operating conditions representative of measurements by the one or more sensors, and an optical detector adapted to detect changes in the light intensity or polarization of light passing through the fiber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.