Estimation of aquifer parameters from available log data and well reports in the Northeast fields of the Great Man-Made River Project (GMRP), East Fezzan (Libya)

Johannes Amtmann

Estimation of aquifer parameters from available log data and well reports in the Northeast fields of the Great Man-Made River Project (GMRP), East Fezzan (Libya)

Titel in Übersetzung: Abschätzung von Aquifer Parametern aus verfügbaren Bohrlochmessungen und Bohrlochberichten in den Nordost Hassouna Bohrungsfeldern des Great Man-Made River Project(GMRP), East Fezzan(Libya)

Johannes Amtmann

Lehrstuhl für Angewandte Geophysik (260)

Publikation: Thesis / Studienabschlussarbeiten und Habilitationsschriften › Masterarbeit

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Abstract

Es wurde eine geophysikalische Voruntersuchung auf der Basis von 12 Bohrungen in einem Gebiet im Nordost- Bohrungsfeld von Jabal al Hassouna(Fezzan, Libya) des Great Man Made River Projekts Phase 2 durchgeführt. Das Ziel der Untersuchung war es Porosität und Permeabilität aus den vorhandenen Bohrlochmessungen und Reports für den gesamten Aquiferbereich abzuschätzen. Aufgebaut auf einen algorithmus nach Archie konnte die Porosität abgeschätzt werden und in weiterer Folge konnte die Permeabilität mithilfe der Poro-Perm Korrelation und den Ergebnissen der Pumptests abgeschätzt werden. Darauffolgend wurde eine Korrelation und eine Interpretation zwischen den einzelnen logplots anhand von 2 Profilen durchgeführt. Die Interpretation der Profile hat zu Diskussionen über die Art der Porosität im Aquifer geführt.

Titel in Übersetzung	Abschätzung von Aquifer Parametern aus verfügbaren Bohrlochmessungen und Bohrlochberichten in den Nordost Hassouna Bohrungsfeldern des Great Man-Made River Project(GMRP), East Fezzan(Libya)
Originalsprache	Englisch
Qualifikation	Dipl.-Ing.
Betreuer/-in / Berater/-in	Schmid, Christian, Mitbetreuer (intern) Schön, Juergen, Betreuer (intern)
Datum der Bewilligung	3 Apr. 2009
Publikationsstatus	Veröffentlicht - 2009

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Jabal al Hassouna Fezzan Libya geophysikalische Voruntersuchung Great Man Made River Project

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abstract = "On the basis of 12 wells, which are part of the Northeast Jabal al Hassouna wellfield (East Fezzan, Libya) of the Great Man Made River Project phase 2 a preliminary geophysical investigation of the aquifer in a certain area was done. The aim of the investigation was to get porosity and permeability information out of all wells from the available well log data and well reports. Well log data are very limited (resistivity, gamma, calliper). Based on a corrected Archie algorithm porosity could be estimated. Permeability was estimated by a combination of poro-perm- correlation and pumping test results. Furthermore logplots were used for correlation between the wells and for characterisation of the aquifer along 2 profiles. The result of interpretation discusses the type of porosity in the aquifer.",

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N2 - On the basis of 12 wells, which are part of the Northeast Jabal al Hassouna wellfield (East Fezzan, Libya) of the Great Man Made River Project phase 2 a preliminary geophysical investigation of the aquifer in a certain area was done. The aim of the investigation was to get porosity and permeability information out of all wells from the available well log data and well reports. Well log data are very limited (resistivity, gamma, calliper). Based on a corrected Archie algorithm porosity could be estimated. Permeability was estimated by a combination of poro-perm- correlation and pumping test results. Furthermore logplots were used for correlation between the wells and for characterisation of the aquifer along 2 profiles. The result of interpretation discusses the type of porosity in the aquifer.

AB - On the basis of 12 wells, which are part of the Northeast Jabal al Hassouna wellfield (East Fezzan, Libya) of the Great Man Made River Project phase 2 a preliminary geophysical investigation of the aquifer in a certain area was done. The aim of the investigation was to get porosity and permeability information out of all wells from the available well log data and well reports. Well log data are very limited (resistivity, gamma, calliper). Based on a corrected Archie algorithm porosity could be estimated. Permeability was estimated by a combination of poro-perm- correlation and pumping test results. Furthermore logplots were used for correlation between the wells and for characterisation of the aquifer along 2 profiles. The result of interpretation discusses the type of porosity in the aquifer.

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KW - Jabal al Hassouna Fezzan Libya geophysikalische Voruntersuchung Great Man Made River Project

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