Fremgangsmåte og apparat til nukleær logging med bruk av litiummontasjer og anordning for gammastrålestripping

A method and apparatus for nuclear logging, and in particular, neutron porosity logging is presented. In accordance with the present invention, a pair of spaced lithium detectors, preferably Li6I crystal or Li6 doped glass are used to detect neutrons emitted from a borehole formation being logged. I...

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Bibliographische Detailangaben
Hauptverfasser:	NORDSTROM, ROY, DUDEK JR., JOSEPH, PERRY, CARL A, ROUNTREE, STEVEN, DAIGLE, GUY A, TSANG, JAMES, GOLDMAN, LEONARD, BRUCK, WILLIAM D
Format:	Patent
Sprache:	nor
Schlagworte:	DETECTING MASSES OR OBJECTS EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS GEOPHYSICS GRAVITATIONAL MEASUREMENTS MEASURING MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS PHYSICS TESTING
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Beschreibung
Zusammenfassung:	A method and apparatus for nuclear logging, and in particular, neutron porosity logging is presented. In accordance with the present invention, a pair of spaced lithium detectors, preferably Li6I crystal or Li6 doped glass are used to detect neutrons emitted from a borehole formation being logged. In addition, novel data processing is used to strip the gamma-ray peak from the spectrum developed by the lithium detectors.