Characterizing the Precambrian Petroleum Systems of Eastern Siberia: Evidence from Oil Geochemistry and Basin Modeling

2010 ◽  
Author(s):  
Melanie Amber Everett
Keyword(s):  
Basin Modeling ◽  
Eastern Siberia ◽  
Petroleum Systems

Preservation and Destruction of Accumulations in Petroleum Systems of Western Margin of East European Craton

2021 ◽  
Author(s):  
Ivan Karpenko ◽  
Oleksii Karpenko
Keyword(s):  
Tectonic Evolution ◽  
East European Craton ◽  
Basin Modeling ◽  
Deep Dive ◽  
Western Margin ◽  
East European ◽  
Common Features ◽  
Petroleum Systems ◽  
Single Well ◽  
Tectonic Development

Abstract The offshore segments of the Pre-Dobrogea foredeep is absolutely unexplored, there is no a single well penetrated Paleozoic units within offshore areas. This study, a deep dive into petroleum system evolution of similar foredeep basin based on a 3D basin modeling was performed in order to get understanding of petroleum systems and geology of offshore segment of Pre-Dobrogea. Western edge of East European craton is about 1450 km takes from Western Black sea shore to Southern shore of Baltic sea. This area within Ukraine includes Pre-Dobrogea foredeep basin, Pre-Carpathian foredeep basin (Bylche-Volytsa foredeep), Lviv Paleozoic basin and extensive Paleozoic margin called Volyno-Podillia area (Figure 1). All mentioned basins have similar sedimentary history, similar dynamics of tectonic evolution, proven petroleum systems of almost the same age, discovered commercial and sub-commercial accumulations and are heavily underexplored and undervalued. 3D basin modeling as a primary exploration technique was applied to mentioned basins in order to identify common features in tectonic development, in sedimentation and evolution of petroleum systems. Identified basins’ similar features now could be extrapolated to underexplored formations and areas within the study area. Figure 1 Western margin of East European Craton with marked areas of study (edited after Mikołajczak, 2016)

scholarly journals Paleozoic petroleum systems of Saudi Arabia: a basin modeling approach

GeoArabia ◽  
2005 ◽  
Vol 10 (3) ◽  
pp. 131-168 ◽  
Author(s):  
Mahdi Abu-Ali ◽  
Ralf Littke
Keyword(s):  
Saudi Arabia ◽  
Boundary Conditions ◽  
Petroleum System ◽  
Source Rocks ◽  
Sensitivity Analyses ◽  
Core Material ◽  
Temperature History ◽  
Basin Modeling ◽  
Petroleum Systems ◽  
Modeling Approach

ABSTRACT The major Paleozoic petroleum system of Saudi Arabia is qualitatively characterized by a proven Silurian (Qusaiba Member, Qalibah Formation) source rock, Devonian (Jauf Formation), Permian and Carboniferous (Khuff and Unayzah formations) reservoirs, a laterally extensive, regional Permian seal (basal Khuff clastics and Khuff evaporites), and four-way closed Hercynian structures. Hydrocarbons found in these systems include non-associated gas in Eastern Arabia and extra light oil in Central Arabia. A basin modeling approach was used to quantify important aspects of the petroleum system. Firstly, seventeen regional wells were selected to establish a reference tool for the three-dimensional (3-D) basin model using multiple one-dimensional (1-D) models. This was accomplished by studying core material from source rocks and other lithologies for thermal maturity and kerogen quality. The major emphasis was on the Silurian section, other Paleozoic intervals and to a lesser extent on the Mesozoic cover from which only few samples were studied. Although vitrinite macerals, solid bitumen, and other vitrinite-like particles were not abundant in most of the investigated samples, enough measured data established valid maturity-depth trends allowing for calibrated models of temperature history. Sensitivity analyses for maturity support the view that thermal boundary conditions and Hercynian uplift and erosion did not greatly influence the Paleozoic petroleum systems. Secondly, a 3-D basin model was constructed using major geologic horizon maps spanning the whole stratigraphic column. This model was used to gain insight into the general maturity distribution, acquire a better control of the model boundary conditions and investigate charge, drainage, migration and filling history of the main Paleozoic reservoirs. The 3-D hydrocarbon migration simulation results qualitatively account for the present gas accumulations in the Permian-Early Triassic Khuff and Carboniferous-Permian Unayzah reservoirs in the Ghawar area. This kind of study illustrates the importance of basin modeling when used with other geologic data to describe petroleum systems. It provides a predictive exploratory tool for efficiently modeling hydrocarbon distribution from known fields. Real earth models can only be described in 3-D as pressure variations and fluid movements in the subsurface are impossible to address in 1-D and 2-D domains.

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