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NMR logging apparatus

United States Patent

May 27, 2014
View the Complete Patent at the US Patent & Trademark Office
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.
Walsh; David O. (Mukilteo, WA), Turner; Peter (Lynnwood, WA)
Vista Clara Inc. (Mukilteo, WA)
13/ 356,381
January 23, 2012
STATEMENT OF GOVERNMENT SUPPORT This invention was made in part with Government support under Agreement DE-FG02-07ER84931 awarded by the US Department of Energy. The Government has certain rights in this invention.