Abstract
The Abadan Plain Basin is located in the Middle East region which is host to some of the world’s largest oil and gas fields around the Persian Gulf. This basin is a foredeep basin to the southwest of the Zagros Fold-Thrust-Belt, bounded along its northern and eastern margins by the Dezful Embayment. Most of the rocks in this basin have been deposited in a carbonate environment, and existing fractures have made the formations a favourable place for hydrocarbon accumulations. The basin is enriched by oil and, therefore, gas reservoirs are few, and some of the explored reservoirs exhibit significant degrees of overpressure. This paper has compiled several aspects of the Abadan Plain Basin tectonics, structural geology and petroleum systems to provide a better understanding of the opportunities and risks of development activities in this region. In addition to the existing knowledge, this paper provides a basin-wide examination of pore pressure, vertical stress, temperature gradient, and wellbore stability issues.
Highlights
Zagros foreland sediments and surrounding basins in the Middle East are host to some of the world’s greatest oil and gas accumulations [1,2,3]
This study aims to provide a detailed summary of the geology of the Abadan Plain Basin, with particular focus on the region’s stratigraphic and tectonic framework, and to explain how these components have resulted in the formation of a petroleum province of global importance
The tectonic system of the Abadan Plain Basin has not been well studied and, despite the significant differences discussed previously, is often considered as a non-folded zone bounded by the Zagros deformation front to the north and east and Arabian Plat to south; it was mostly studied in conjunction with structures in the Zagros and the Arabian Plate
Summary
Zagros foreland sediments and surrounding basins in the Middle East are host to some of the world’s greatest oil and gas accumulations [1,2,3]. Zagros Orogeny, and its associated folding as a result of Arabia-Eurasia plate collision, comprise a large proportion of the hydrocarbon accumulations of the Middle East region, the world’s richest hydrocarbon habitat [10]. In this region, gas plays are mainly formed in some of the Permian–Triassic platform successions’ mega-sequences [11], while the main petroleum sources and reservoir rocks have been formed in those of the Jurassic to the present [12,13,14].
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