Abstract
IT was shown by Gutowsky, Ray, Rutledge and Unterberger1 that crude oils exhibit electron resonance and by Poindexter2 that the Overhauser effect is found in crude oils. The existence of the Overhauser effect depends on at least a part of the relaxation of the protons being due to the free electrons. Because the electron resonance and Overhauser effect results vary from sample to sample, it seemed of interest to make proton relaxation measurements on a number of samples of crude oil. The proton relaxation in crude oils is also of interest because of the introduction of proton precession instruments for underground measurements in oil wells3.
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References
Gutowsky, Ray, Rutledge, and Unterberger, J. Chem. Phys., 28, 744 (1958).
Poindexter, E., Nature, 182, 1087 (1958).
Brown, R. J. S., and Gamson, B. W., J. Pet. Tech., 219, 201 (1960).
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BROWN, R. Proton Relaxation in Crude Oils. Nature 189, 387–388 (1961). https://doi.org/10.1038/189387a0
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DOI: https://doi.org/10.1038/189387a0
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