Radiogenic heat production in Rudeis Formation, Lower Miocene, Belayim marine oil field, Gulf of Suez, EgyptHassan Mohamed 1 2 4 Hideki Mizunaga 1 Nasser Mohamed Abou Ashour 3 Refaat Ahmed Elterb 2 Ibrahim Mostafa Elalfy 2 Ayman Shebel Elsayed 3
1 Department of Earth Resources Engineering, Faculty of Engineering, Kyushu University, Fukuoka 819-0395, Japan.
2 Ground Geophysics Department, Exploration Division, Nuclear Materials Authority, PO Box 530, Maadi, Cairo, Egypt.
3 Geophysics Department, Faculty of Science, Ain-Shams University, Cairo, Egypt.
4 Corresponding author. Email: email@example.com
Exploration Geophysics - https://doi.org/10.1071/EG15021
Submitted: 17 March 2015 Accepted: 11 August 2016 Published online: 29 September 2016
This study describes radiogenic heat production (RHP) estimated from two sets of well logging data recorded in Rudeis Formation, Belayim marine oil field. Subsurface total count gamma-ray (GR) data were recorded in nine wells, seven of which possessed spectrometric data (eU, eTh, and K). The data show that RHP estimated from GR logs (ABR) varies from 0.13 to 1.73 µW/m3, with an average of 0.7 µW/m3 and a standard deviation of 0.26 µW/m3. In addition, 72.9% of RHP values fall within the range of 0.6–1.0 µW/m3. RHP estimated from the concentrations of radioactive elements (AR) vary from 0.13 to 2.1 µW/m3, with an average 0.71 µW/m3 and a standard deviation of 0.38 µW/m3. 50% of these RHP values fall within the range of 0.6–1.0 µW/m3. Cross-correlation of ABR and AR calculations yielded a moderate fit of 0.75. The three-dimensional (3D)-slicing of the reservoir shows that the northern and north-western parts of the study area have higher RHP compared to other parts. The estimated RHP can produce enough heat which has an effect on the hydrocarbon potential in Rudeis Formation.
Key words: 3D-slicing, radioactive elements, radiogenic heat production, Rudeis Formation, total gamma radiation.
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