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Tracing subsurface oil pollution leakage using 2D electrical resistivity tomography
Faculty
Science
Year:
2013
Type of Publication:
Article
Pages:
3527-3533
Authors:
Metwaly, Mohamed, Khalil, Mohamed Ahmed, Al-Sayed, El-Said, El-Kenawy, Abeer
DOI:
10.1007/s12517-012-0600-z
Journal:
ARABIAN JOURNAL OF GEOSCIENCES SPRINGER HEIDELBERG
Volume:
6
Research Area:
Geology
ISSN
ISI:000323225400034
Keywords :
2D electrical resistivity tomography, Oil pollution, Egypt
Abstract:
This study provides an evaluation of the subsurface oil contaminant flow in an oil production field at the Wadi Feiran fan, along the Gulf of Suez, Egypt. The 2D electrical resistivity tomography technique has been applied along four profiles surrounding the spill location of oil dump site. Theoretical soil resistivity response versus fluid resistivity for different cation exchange capacity values has been studied. Then, a physical model for the current situation of flowing the oil over the groundwater (sea invaded water) of saturated fluvial sediments has been introduced. It was supposed that the crude oil has higher resistivity values and turned to be conductive far away from the oil spill source under the effect of microbial biodegradation. Such conditions of contaminated distribution and its resistivity values have been considered during the inversion and interpretation of the acquired data sets. The processed 2D resistivity profiles reveal that oil plumes are accumulated in the seawater invasion direction, whereas it has low signatures along the profiles parallel to the shore line.
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