Packer fluid and system and method for remote sensing
US8575936B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 27, 2010 |
| Grant date | Nov 5, 2013 |
| Priority date | — |
| Expiry date | Mar 1, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L9/0022
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system, method and device for interrogating a downhole environment in a borehole beneath a surface includes a source of electromagnetic energy operable to transmit an electromagnetic signal in the borehole, a sensor module, including a passive resonating circuit including a crystal oscillator having a resonant frequency that varies with changes in the condition in the downhole environment in response to a condition in the downhole environment in the borehole and a detector positionable to receive the reflected modulated electromagnetic signal. In an embodiment, a solids-free dielectric medium is provided within an annular volume in the borehole defined by the casing through which the electromagnetic signal is transmitted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.