Prospect evaluation and hydrocarbon potential assessment: the Lower Eocene Facha non-clastic reservoirs, Hakim Oil Field (NC74A), Sirte basin, Libya—a case study

Abstract Petrophysical assessment of Facha Formation based on log data of six wells A1, A3, A4, A5, A8 and A13 recorded over the entire reservoir interval was established. Hakim Oil Field produces from the Lower Eocene Facha reservoir, which is located at the western side of Sirte basin. Limestone,...

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Main Authors: Mohamed A. Kassab, Ali El-Said Abbas, Mostafa A. Teama, Musa A. S. Khalifa
Format: Article
Language:English
Published: SpringerOpen 2019-09-01
Series:Journal of Petroleum Exploration and Production Technology
Subjects:
Online Access:http://link.springer.com/article/10.1007/s13202-019-00773-8
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spelling doaj-d59738f41b554911861cc16e25565fc12020-11-25T02:44:23ZengSpringerOpenJournal of Petroleum Exploration and Production Technology2190-05582190-05662019-09-0110235136210.1007/s13202-019-00773-8Prospect evaluation and hydrocarbon potential assessment: the Lower Eocene Facha non-clastic reservoirs, Hakim Oil Field (NC74A), Sirte basin, Libya—a case studyMohamed A. Kassab0Ali El-Said Abbas1Mostafa A. Teama2Musa A. S. Khalifa3Egyptian Petroleum Research Institute (EPRI)Faculty of Petroleum and Mining Engineering, Suez UniversityFaculty of Petroleum and Mining Engineering, Suez UniversityMellitah Oil & Gas B. V. Libyan BranchAbstract Petrophysical assessment of Facha Formation based on log data of six wells A1, A3, A4, A5, A8 and A13 recorded over the entire reservoir interval was established. Hakim Oil Field produces from the Lower Eocene Facha reservoir, which is located at the western side of Sirte basin. Limestone, dolostone and dolomitic limestone are the main lithologies of the Facha reservoir. This lithology is defined by neutron porosity—density cross-plot. Noteworthily, limestone increases in the lowermost intervals of the reservoir. Structurally, the field is traversed by three northwest–southeast faults. The shale of the Upper Cretaceous Sirte Formation is thought to be the source rock of the Facha Formation, whereas the seals are the limestone and anhydrite of the Lower Eocene Gir Formation. In this study, the Facha reservoir’s cutoff values were obtained from the cross-plots of the calculated shale volume, porosity and water saturation values accompanied with gamma ray log data and were set as 20%, 10% and 70%, respectively. Isoparametric maps for the thickness variation of net pay, average porosity, shale volume and water saturation were prepared, and the authors found out that the Facha Formation has promising reservoir characteristics in the area of study; a prospective region for oil accumulation trends is in the north and south of the study area.http://link.springer.com/article/10.1007/s13202-019-00773-8Well logPetrophysical parameterLower EoceneHakim Oil FieldSirte basinLibya
collection DOAJ
language English
format Article
sources DOAJ
author Mohamed A. Kassab
Ali El-Said Abbas
Mostafa A. Teama
Musa A. S. Khalifa
spellingShingle Mohamed A. Kassab
Ali El-Said Abbas
Mostafa A. Teama
Musa A. S. Khalifa
Prospect evaluation and hydrocarbon potential assessment: the Lower Eocene Facha non-clastic reservoirs, Hakim Oil Field (NC74A), Sirte basin, Libya—a case study
Journal of Petroleum Exploration and Production Technology
Well log
Petrophysical parameter
Lower Eocene
Hakim Oil Field
Sirte basin
Libya
author_facet Mohamed A. Kassab
Ali El-Said Abbas
Mostafa A. Teama
Musa A. S. Khalifa
author_sort Mohamed A. Kassab
title Prospect evaluation and hydrocarbon potential assessment: the Lower Eocene Facha non-clastic reservoirs, Hakim Oil Field (NC74A), Sirte basin, Libya—a case study
title_short Prospect evaluation and hydrocarbon potential assessment: the Lower Eocene Facha non-clastic reservoirs, Hakim Oil Field (NC74A), Sirte basin, Libya—a case study
title_full Prospect evaluation and hydrocarbon potential assessment: the Lower Eocene Facha non-clastic reservoirs, Hakim Oil Field (NC74A), Sirte basin, Libya—a case study
title_fullStr Prospect evaluation and hydrocarbon potential assessment: the Lower Eocene Facha non-clastic reservoirs, Hakim Oil Field (NC74A), Sirte basin, Libya—a case study
title_full_unstemmed Prospect evaluation and hydrocarbon potential assessment: the Lower Eocene Facha non-clastic reservoirs, Hakim Oil Field (NC74A), Sirte basin, Libya—a case study
title_sort prospect evaluation and hydrocarbon potential assessment: the lower eocene facha non-clastic reservoirs, hakim oil field (nc74a), sirte basin, libya—a case study
publisher SpringerOpen
series Journal of Petroleum Exploration and Production Technology
issn 2190-0558
2190-0566
publishDate 2019-09-01
description Abstract Petrophysical assessment of Facha Formation based on log data of six wells A1, A3, A4, A5, A8 and A13 recorded over the entire reservoir interval was established. Hakim Oil Field produces from the Lower Eocene Facha reservoir, which is located at the western side of Sirte basin. Limestone, dolostone and dolomitic limestone are the main lithologies of the Facha reservoir. This lithology is defined by neutron porosity—density cross-plot. Noteworthily, limestone increases in the lowermost intervals of the reservoir. Structurally, the field is traversed by three northwest–southeast faults. The shale of the Upper Cretaceous Sirte Formation is thought to be the source rock of the Facha Formation, whereas the seals are the limestone and anhydrite of the Lower Eocene Gir Formation. In this study, the Facha reservoir’s cutoff values were obtained from the cross-plots of the calculated shale volume, porosity and water saturation values accompanied with gamma ray log data and were set as 20%, 10% and 70%, respectively. Isoparametric maps for the thickness variation of net pay, average porosity, shale volume and water saturation were prepared, and the authors found out that the Facha Formation has promising reservoir characteristics in the area of study; a prospective region for oil accumulation trends is in the north and south of the study area.
topic Well log
Petrophysical parameter
Lower Eocene
Hakim Oil Field
Sirte basin
Libya
url http://link.springer.com/article/10.1007/s13202-019-00773-8
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