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Gamma ray spectrometry logs as a hydrocarbon indicator for clastic reservoir rocks in Egypt
Faculty
Not Specified
Year:
2013
Type of Publication:
Article
Pages:
90-95
Authors:
Al-Alfy, I. M, Nabih, M. A, Eysa, E. A
DOI:
10.1016/j.apradiso.2012.11.016
Journal:
APPLIED RADIATION AND ISOTOPES PERGAMON-ELSEVIER SCIENCE LTD
Volume:
73
Research Area:
Chemistry; Nuclear Science \& Technology; Radiology, Nuclear Medicine \& Medical Imaging
ISSN
ISI:000315372900015
Keywords :
Thorium normalization, Oil bearing zone, Clastic rocks
Abstract:
Petroleum oil is an important source for the energy in the world. The Gulf of Suez, Nile Delta and South Valley are important regions for studying hydrocarbon potential in Egypt. A thorium normalization technique was applied on the sandstone reservoirs in the three regions to determine the hydrocarbon potentialities zones using the three spectrometric radioactive gamma ray-logs (eU, eTh and K\% logs). The conventional well logs (gamma-ray, deep resistivity, shallow resistivity, neutron, density and sonic logs) are analyzed to determine the net pay zones in these wells. Indices derived from thorium normalized spectral logs indicate the hydrocarbon zones in petroleum reservoirs. The results of this technique in the three regions (Gulf of Suez, Nile Delta and South Valley) are in agreement with the results of the conventional well log analyses by ratios of 82\%, 78\% and 71\% respectively. Crown Copyright (C) 2012 Published by Elsevier Ltd. All rights reserved.
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