Burial and Thermal History Modelling of the Murzuq and Ghadames Basins (Libya) Using the Galo Computer Programme

Galushkin, Yu. I.; Eloghbi, S.; Sak, M.

doi:10.1111/jpg.12570

Cited by 12 publications

(2 citation statements)

References 29 publications

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“…This indicates a systematic change in the type of organic matter input, notably the dilution of marine Type II by terrigenous Type III kerogen. Galushkin et al (2014) proposed that the Tanezzuft Formation in the Ghadames Basin is within the oil window with R o >0.8%, and that generation of liquid hydrocarbons may occur. They concluded that the organic matter in the formation consists of a mixture of 80% Type II and 20% Type III kerogen, with the total initial hydrocarbon generation potential of 534 mg HC/g TOC.…”

Section: Thermal Maturity Of Organic Mattermentioning

confidence: 99%

Organic Geochemistry of the Lower Silurian Tanezzuft Formation and Biomarker Characteristics of Crude Oils From the Ghadames Basin, Libya

Diasty

Beialy

Fadeel

et al. 2017

Journal of Petroleum Geology

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The Ghadames Basin of NW Libya contains more than 10 B brls oil‐equivalent in Palaeozoic siliciclastic reservoirs which are charged by organic‐rich “hot shales” in the Lower Silurian (Rhuddanian) Tanezzuft Formation. Geochemical analysis of 85 shale samples and ten oils from three fields (NC2, NC4 and NC7) in the central and northern part of the basin provides a robust description of the Tanezzuft – Mamuniyat/Acacus petroleum system in this region, and of the associated source facies and oil families. The shale samples underwent total organic carbon (TOC) analysis and Rock‐Eval pyrolysis, and the ten crude oil samples were analysed by gas chromatography – flame ionization detection (GC‐FID) and GC‐mass spectrometry (GC‐MS) of the saturated and aromatic hydrocarbon fractions, accompanied by stable carbon isotopic analysis. Organic matter ranges from Type II to mixed Type II/III kerogen with varying oil and gas generation potential in the early to main stages of the oil generation window. The analysed oils are characterised by low sulphur, nickel and vanadium contents, and relatively high API gravity (34.9–46.8oAPI). Biomarkers suggest that they were generated from marine shales containing abundant Type II to mixed Type II/III kerogen deposited in mildly anoxic – suboxic conditions with a dominance of C29 over C27 or C28 steranes, indicative of a source rich in brown algae and cyanobacteria. Their close stratigraphic association and biomarker characteristics support a Tanezzuft “hot shales” source for the Mamuniyat and Acacus oils in the three fields. Maturity‐related parameters based on terpanes, steranes, aromatic hydrocarbons and low molecular‐weight hydrocarbons, suggest generation from marine shales in the early to peak oil‐generation window. The ZE3‐NC7, A19‐NC7 and A20 NC7 oils from the NC7 oil field are significantly more mature than those from the NC2 and NC4 fields. This indicates a difference in expulsion timing and may be related to the presence of two “hot shales” or to fault‐triggered vertical migration preceding and during the Neogene.

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Section: Thermal Maturity Of Organic Mattermentioning

confidence: 99%

Organic Geochemistry of the Lower Silurian Tanezzuft Formation and Biomarker Characteristics of Crude Oils From the Ghadames Basin, Libya

Diasty

Beialy

Fadeel

et al. 2017

Journal of Petroleum Geology

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“…[16,17]. A 1D model is based on the single well [18][19][20][21][22][23] and a 2D model is based on the section line [24][25][26]. 1D and 2D basin modelling are convenient and rapid approaches to study the petroleum generation processes.…”

Section: Introductionmentioning

confidence: 99%

3D-Basin Modeling of the Changling Depression, NE China: Exploring Petroleum Evolution in Deep Tight Sandstone Reservoirs

Zhang

Guo

et al. 2019

Energies

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The Changling Depression is the largest and most resource-abundant reservoir in the South Songliao Basin, NE China. The petroleum evolution rules in the Lower Cretaceous deep tight sandstone reservoir are unclear. In this study, 3D basin modeling is performed to analyze the large-scale petroleum stereoscopic migration and accumulation history. The Changling Depression has a complex fault system and multiple tectonic movements. The model is calibrated by the present formation temperatures and observed maturity (vitrinite reflectance). We consider (1) three main erosion episodes during the burial history, one during the Early Cretaceous and two during the Late Cretaceous; (2) the regional heat flow distribution throughout geological history, which was calibrated by abundant measurement data; and (3) a tight sandstone porosity model, which is calibrated by experimental petrophysical parameters. The maturity levels of the Lower Cretaceous source rocks are reconstructed and showed good gas-generation potential. The highest maturity regions are in the southwestern sag and northern sag. The peak hydrocarbon generation period contributed little to the reservoir because of a lack of seal rocks. Homogenization temperature analysis of inclusions indicated two sets of critical moments of gas accumulation. The hydrocarbon filling in the Haerjin and Shuangtuozi structures occurred between 80 Ma and 66 Ma, while the Dalaoyefu and Fulongquan structures experienced long-term hydrocarbon accumulation from 100 Ma to 67 Ma. The homogenization temperatures of the fluid inclusions may indicate a certain stage of reservoir formation and, in combination with the hydrocarbon-accumulation simulation, can distinguish leakage and recharging events.

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The Lithosphere Extension and Hydrocarbon Generation in the Eastern Continental Passive Margin of India

Galushkin

2016

Non-Standard Problems in Basin Modelling

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Burial and Thermal History Modelling of the Murzuq and Ghadames Basins (Libya) Using the Galo Computer Programme

Abstract: The GALO computer programme was used to model the thermal and burial histories of the

Cited by 12 publications

References 29 publications

Organic Geochemistry of the Lower Silurian Tanezzuft Formation and Biomarker Characteristics of Crude Oils From the Ghadames Basin, Libya

Organic Geochemistry of the Lower Silurian Tanezzuft Formation and Biomarker Characteristics of Crude Oils From the Ghadames Basin, Libya

3D-Basin Modeling of the Changling Depression, NE China: Exploring Petroleum Evolution in Deep Tight Sandstone Reservoirs

The Lithosphere Extension and Hydrocarbon Generation in the Eastern Continental Passive Margin of India

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