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Title: NMR logging apparatus

Abstract

Technologies including NMR logging apparatus and methods are disclosed. Example NMR logging apparatus may include surface instrumentation and one or more downhole probes configured to fit within an earth borehole. The surface instrumentation may comprise a power amplifier, which may be coupled to the downhole probes via one or more transmission lines, and a controller configured to cause the power amplifier to generate a NMR activating pulse or sequence of pulses. Impedance matching means may be configured to match an output impedance of the power amplifier through a transmission line to a load impedance of a downhole probe. Methods may include deploying the various elements of disclosed NMR logging apparatus and using the apparatus to perform NMR measurements.

Inventors:
;
Issue Date:
Research Org.:
Vista Clara Inc., Mukilteo, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1132599
Patent Number(s):
8736264
Application Number:
13/356,381
Assignee:
Vista Clara Inc. (Mukilteo, WA)
Patent Classifications (CPCs):
G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
G - PHYSICS G01 - MEASURING G01R - MEASURING ELECTRIC VARIABLES
DOE Contract Number:  
FG02-07ER84931
Resource Type:
Patent
Resource Relation:
Patent File Date: 2012 Jan 23
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION

Citation Formats

Walsh, David O, and Turner, Peter. NMR logging apparatus. United States: N. p., 2014. Web.
Walsh, David O, & Turner, Peter. NMR logging apparatus. United States.
Walsh, David O, and Turner, Peter. Tue . "NMR logging apparatus". United States. https://www.osti.gov/servlets/purl/1132599.
@article{osti_1132599,
title = {NMR logging apparatus},
author = {Walsh, David O and Turner, Peter},
abstractNote = {Technologies including NMR logging apparatus and methods are disclosed. Example NMR logging apparatus may include surface instrumentation and one or more downhole probes configured to fit within an earth borehole. The surface instrumentation may comprise a power amplifier, which may be coupled to the downhole probes via one or more transmission lines, and a controller configured to cause the power amplifier to generate a NMR activating pulse or sequence of pulses. Impedance matching means may be configured to match an output impedance of the power amplifier through a transmission line to a load impedance of a downhole probe. Methods may include deploying the various elements of disclosed NMR logging apparatus and using the apparatus to perform NMR measurements.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue May 27 00:00:00 EDT 2014},
month = {Tue May 27 00:00:00 EDT 2014}
}

Works referenced in this record:

Borehole measurement of NMR characteristics of earth formations
patent, October 1991


Borehole measurement of NMR characteristics of earth formations
patent, October 1991


NMR well logging apparatus and method
patent, January 2000


Eccentric NMR well logging apparatus and method
patent, February 2000


Nuclear magnetic resonance logging with azimuthal resolution
patent, April 2002


Systems and methods for deep-looking NMR logging
patent, December 2008


Apparatus for extraction of hydrocarbon fuels or contaminants using electrical energy and critical fluids
patent, January 2012


Method for resistivity well logging utilizing nuclear magnetic resonance
patent-application, August 2002


Nuclear quadrupole resonance logging tool and methods for imaging therewith
patent-application, September 2008


Noise-Canceling In-Situ NMR Detection
patent-application, May 2011


Non-Resonant Logging Tools
patent-application, May 2012


SNMR Pulse Sequence Phase Cycling
patent-application, November 2012


    Works referencing / citing this record: