CPT+NMR Instrumentation and Tooling for Offshore Wind Geotechnical Investigations
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16 TIDAL AND WAVE POWER↗
Engineering topics
Walsh, David O
Publications and source records attributed to Walsh, David O.
Dynamic NMR Logging Technologies for High-Resolution Measurement of Hydrogeologic Properties and Soil Response
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54 ENVIRONMENTAL SCIENCES↗
NMR logging apparatus
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.
47 OTHER INSTRUMENTATION↗