Logging device with down-hole transceiver for operation in extreme temperatures
US7450053B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 13, 2006 |
| Grant date | Nov 11, 2008 |
| Priority date | — |
| Expiry date | Nov 6, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S13/885
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A logging radar system and method for measuring propped fractures and down-hole formation conditions in a subterranean formation including: a radar source; an optical source; an optical modulator for modulating an optical signal from the optical source according to a signal from the radar source; a photodiode for converting the modulated optical signal output from the optical modulator to the source radar signal; a transmitter and receiver unit; and a mixer. The transmitter and receiver unit receives the source radar signal from the photodiode, transmits the source radar signal into the formation and receives a reflected radar signal. The mixer mixes the reflected radar signal with the source radar signal to provide an output. This technology can be used to describe all fractures connected to the wellbore and differentiate between the dimensions of the two vertical wings of a propped fracture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.