Title:
CORRECTION FOR GAIN VARIATION DUE TO FAST CHANGING NMR SENSOR GAIN
Document Type and Number:
WIPO Patent Application WO/2012/125935
Kind Code:
A3
Abstract:
An apparatus for performing nuclear magnetic resonance (NMR) measurements of a material of interest includes an NMR tool and a processor. The NMR tool includes a transmitter antenna; a transmitter coupled to the transmitter antenna; and a receiver antenna configured to receive NMR signals in response to transmitted pulses of electromagnetic energy transmitted by the transmitter antenna. The NMR signals include at least a first signal and a second signal of a phase-alternated group of signals. The processor is configured to receive the NMR signals; receive a first system gain related to the first signal and a second system gain related to the second signal, each system gain being related to a system comprising the NMR tool and the material of interest; and calibrate the NMR signals using the first system gain and the second system gain.
Inventors:
BLANZ MARTIN (DE)
KRUSPE THOMAS (DE)
KRUSPE THOMAS (DE)
Application Number:
PCT/US2012/029462
Publication Date:
December 27, 2012
Filing Date:
March 16, 2012
Export Citation:
Assignee:
BAKER HUGHES INC (US)
BLANZ MARTIN (DE)
KRUSPE THOMAS (DE)
BLANZ MARTIN (DE)
KRUSPE THOMAS (DE)
International Classes:
G01V3/32; G01V3/34
Foreign References:
| US6541969B2 | 2003-04-01 | |||
| US6362619B2 | 2002-03-26 | |||
| US7026814B2 | 2006-04-11 | |||
| US7034529B2 | 2006-04-25 |
Download PDF: