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The contribution of gravity method in geothermal exploration of southern part of the Gulf of Suez–Sinai region, Egypt

Atef, H. ; Abd El-Gawad, A. M. S. ; Abdel Zaher, M. ; Farag, K. S. I. (2016)
The contribution of gravity method in geothermal exploration of southern part of the Gulf of Suez–Sinai region, Egypt.
In: NRIAG Journal of Astronomy and Geophysics, 5 (1)
doi: 10.1016/j.nrjag.2016.02.005
Article, Bibliographie

Abstract

The Gulf of Suez region represents the most promising area in Egypt for geothermal exploration which is characterized by superficial thermal manifestations represented by a cluster of hot springs with varying temperatures from 35 to 72 °C. The main purpose of the present study was to shed the light on the integration between gravity work and geothermal data in detecting the main subsurface structures in addition to expecting the geothermal sources in the area under consideration. Correction was applied on the bottom hole temperature data to obtain the true formation equilibrium temperatures that can provide useful information about the subsurface thermal regime. Based on these logging data, temperature gradient and heat flow values were computed at each well, and it is found that the mean geothermal gradient of the study area is 32 °C/km; nevertheless, some local geothermal potential fields were located with more than 40 °C/km. Also, heat flow values are ranging from 45 to 115 mW/m2. The Bouguer anomaly map of the study area was used for delineating the subsurface structures and tectonic trends that have resulted in a potential heat source. The gravity inversion revealed a good correlation between areas of high temperature gradients, high heat flow and positive gravity anomalies. The high temperature gradient and heat flow values suggested being associated with a noticeable hydrothermal source of heat anomaly located at relatively shallow depths which is expected to be due to the uplift of the basement in the area.

Item Type: Article
Erschienen: 2016
Creators: Atef, H. ; Abd El-Gawad, A. M. S. ; Abdel Zaher, M. ; Farag, K. S. I.
Type of entry: Bibliographie
Title: The contribution of gravity method in geothermal exploration of southern part of the Gulf of Suez–Sinai region, Egypt
Language: English
Date: 2016
Publisher: Elsevier
Journal or Publication Title: NRIAG Journal of Astronomy and Geophysics
Volume of the journal: 5
Issue Number: 1
DOI: 10.1016/j.nrjag.2016.02.005
URL / URN: https://doi.org/10.1016/j.nrjag.2016.02.005
Abstract:

The Gulf of Suez region represents the most promising area in Egypt for geothermal exploration which is characterized by superficial thermal manifestations represented by a cluster of hot springs with varying temperatures from 35 to 72 °C. The main purpose of the present study was to shed the light on the integration between gravity work and geothermal data in detecting the main subsurface structures in addition to expecting the geothermal sources in the area under consideration. Correction was applied on the bottom hole temperature data to obtain the true formation equilibrium temperatures that can provide useful information about the subsurface thermal regime. Based on these logging data, temperature gradient and heat flow values were computed at each well, and it is found that the mean geothermal gradient of the study area is 32 °C/km; nevertheless, some local geothermal potential fields were located with more than 40 °C/km. Also, heat flow values are ranging from 45 to 115 mW/m2. The Bouguer anomaly map of the study area was used for delineating the subsurface structures and tectonic trends that have resulted in a potential heat source. The gravity inversion revealed a good correlation between areas of high temperature gradients, high heat flow and positive gravity anomalies. The high temperature gradient and heat flow values suggested being associated with a noticeable hydrothermal source of heat anomaly located at relatively shallow depths which is expected to be due to the uplift of the basement in the area.

Uncontrolled Keywords: Heat flow, Bouguer map, Gulf of Suez, Bottom hole temperature logs, Gravity inversion
Divisions: 11 Department of Materials and Earth Sciences
11 Department of Materials and Earth Sciences > Earth Science
11 Department of Materials and Earth Sciences > Earth Science > Geothermal Science and Technology
Date Deposited: 17 Mar 2021 06:53
Last Modified: 26 Aug 2021 14:12
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