Articles

Neutron and Gamma Ray Scattering Measurements for Subsurface Geochemistry

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Science  05 Oct 1990:
Vol. 250, Issue 4977, pp. 82-87
DOI: 10.1126/science.250.4977.82

Abstract

Developed for the oil industry, well logging instrumentation based on electrical, acoustic, and nuclear measurements has been providing information about the localization and evaluation of hydrocarbon-bearing strata for petroleum geologists and engineers since 1927. This method of exploring properties of the earth's crust without taking physical samples is attracting a growing audience of geologists and geophysicists because of recent developments that permit nondestructive measurements of subsurface geochemistry. A combination of nuclear measurement techniques, which use gamma ray and neutron sources, can provide detailed information on rock composition of interest to both industry and academia.

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