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Hydrocarbon charge assessment of frontier basins; a case study of the oceanic crust of the Moroccan Atlantic margin

Martin Neumaier, Ralf Littke, Stefan Back, Peter Kukla, Michael Schnabel and Christian Reichert
Hydrocarbon charge assessment of frontier basins; a case study of the oceanic crust of the Moroccan Atlantic margin
Petroleum Geoscience (November 2018) 25 (2): 151-168

Abstract

A string of prominent structural anticlines is located in the deep offshore Atlantic Ocean c. 150 km west of Essaouira (Morocco), possibly forming large traps. However, the basement is inferred to comprise oceanic crust, which raises concerns for source-rock presence and sufficient subsurface temperatures for oil generation. The presented work showcases a hydrocarbon charge assessment approach adapted to the very sparse data context and the specific geodynamic settings of the Moroccan Atlantic margin. Regional 2D basin and petroleum systems modelling was performed to assess possible scenarios of hydrocarbon charge of the deep-water folds, its migration style and timing. Several possible oil and gas generation drivers have been identified for postulated Toarcian marine shale source rocks. These range from simple burial-driven heating to more unique scenarios involving early stage oceanic ridge heating and the effect of the Canary Island hotspot. In particular, the latter might have had a major impact on the oil and gas generation, the migration style and overall accumulated amounts. Supplementary material: A table with lithology parameters used for modelling, an overview table of modelling cases and annex figures with additional results from modelling cases are available at https://doi.org/10.6084/m9.figshare.c.4183106


ISSN: 1354-0793
Serial Title: Petroleum Geoscience
Serial Volume: 25
Serial Issue: 2
Title: Hydrocarbon charge assessment of frontier basins; a case study of the oceanic crust of the Moroccan Atlantic margin
Affiliation: Rheinisch-Westfaelische Technische Hochschule Aachen, Institute of Geology and Geochemistry of Petroleum and Coal, Energy and Mineral Resources, Aachen, Germany
Pages: 151-168
Published: 20181109
Text Language: English
Publisher: Geological Society Publishing House for EAGE (European Association of Geoscientists & Engineers), London, United Kingdom
References: 62
Accession Number: 2019-002313
Categories: Economic geology, geology of energy sources
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. sects., strat. col., geol. sketch map
N30°00'00" - N33°00'00", W13°00'00" - W08°00'00"
Secondary Affiliation: Federal Institute for Geosciences and Natural Resources, DEU, Germany
Country of Publication: United Kingdom
Secondary Affiliation: GeoRef, Copyright 2019, American Geosciences Institute. Reference includes data from GeoScienceWorld, Alexandria, VA, United States. Reference includes data from The Geological Society, London, London, United Kingdom
Update Code: 201903
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