Using Biodegradation to Date Hydrocarbon Entry Into Reservoirs: Examples From the Cooper/Eromanga Basin, Australia

Elliott, Lindsay

doi:10.1190/ice2015-2210537

Cited by 2 publications

(3 citation statements)

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“…The oils are characterized by API gravities between 34°and 53°and low sulfur contents (<0.1 wt. % S), with the most biodegraded oils typically having the lowest API values (Elliott, 2015a).…”

Section: Petroleum Systemsmentioning

confidence: 99%

“…Gas is predominantly reservoired in the Cooper Basin, whereas the overlying Eromanga Basin hosts mainly undersaturated light oil. Although gas rich, the Cooper Basin also contains liquid hydrocarbons with a wide range of compositions from gas condensates to waxy oils, where the majority of the latter have depleted light hydrocarbon content (Boreham and Summons, 1999;Summons et al, 2002;Elliott, 2015a). The oils are characterized by API gravities between 34°and 53°and low sulfur contents (<0.1 wt.…”

Section: Petroleum Systemsmentioning

confidence: 99%

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Hydrocarbon prospectivity of the Cooper Basin, Australia

Hall

Palu

Murray³

et al. 2019

Bulletin

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The Pennsylvanian-Middle Triassic Cooper Basin is Australia's premier conventional onshore hydrocarbon-producing province. The basin also hosts a range of unconventional gas play types, including basin-centered gas and tight gas accumulations, deep dry coal gas associated with the Patchawarra and Toolachee Formations, and the Murteree and Roseneath shale gas plays.This study used petroleum systems analysis to investigate the maturity and generation potential of 10 Permian source rocks in the Cooper Basin. A deterministic petroleum systems model was used to quantify the volume of expelled and retained hydrocarbons, estimated at 1272 billion BOE (512 billion bbl and 760 billion BOE) and 977 billion BOE (362 billion bbl and 615 billion BOE), respectively. Monte Carlo simulations were used to quantify the uncertainty in volumes generated and to demonstrate the sensitivity of these results to variations in source-rock characteristics.The large total generation potential of the Cooper Basin and the broad distribution of the Permian source kitchen highlight the basin's significance as a world-class hydrocarbon province. The large disparity between the calculated volume of hydrocarbons generated and the volume so far found in reservoirs indicates the potential for large volumes to remain within the basin, despite significant losses from leakage and water washing. The hydrocarbons expelled have provided abundant charge to both conventional accumulations and to the tight and basin-centered gas plays, and the broad spatial distribution of hydrocarbons remaining within the source rocks, especially those within the Toolachee and Patchawarra Formations, suggests the potential for widespread shale and deep dry coal plays.

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Section: Petroleum Systemsmentioning

confidence: 99%

Section: Petroleum Systemsmentioning

confidence: 99%

Hydrocarbon prospectivity of the Cooper Basin, Australia

Hall

Palu

Murray³

et al. 2019

Bulletin

View full text Add to dashboard Cite

show abstract

“…The Cooper Basin predominantly comprises of gas reservoirs, whereas Eromanga Basin hosts undersaturated light oils. Although gas rich, the Cooper Basin also contains liquid hydrocarbons with a wide range of compositions from gas condensates to waxy oils, where most of the latter have depleted light hydrocarbon content (Boreham & Summons, 1999; Elliott, 2015). The Patchawarra Formation coals and carbonaceous shales inter‐bedded with fluvial sands are the major source of hydrocarbons into carrier beds, allowing effective primary migration (Kramer, McKirdy, Arouri, Schwark, & Leythaeuser, 2004).…”

Section: Basin Settingsmentioning

confidence: 99%

An integrated evaluation approach on dry hole analysis: A case study of Ballat anticline, Naccowlah Block, Eromanga Basin, Queensland, Australia

et al. 2022

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This study is based on an integrated investigation of seismic, well log, geological and geochemical data, the detailed analysis of source, reservoir, and structures were conducted in the Naccowlah Block, Eromanga Basin, Queensland, Australia. The Naccowlah Block is one of the most important hydrocarbons producing areas centered in Eromanga Basin, with several producing wells, except Ballat-01 and Chilla-01. This study pertains specifically to the Ballat structure, which was declared dry.The purpose of this research is to evaluate and identify specific 'Dry Hole' failure, based on analysis of several factors: reservoir deliverability, source maturity, migration, and structural presence. 3D seismic data revealed NE-SW trending series of reverse faulting mainly conquered by four-way dip closure due to compressional tectonics in the study area. The burial history and event chart depict the preservation and maturation of potential source rock, which is furthermore affirmed by the vitrinite reflectance curve. Interpreted regional migration model and structural analysis of Naccowlah Block stated the presence of a suitable structure for hydrocarbon generation and migration pathways. Despite all favourable aspects for the accumulation of hydrocarbon in Hutton sandstone, the structural restoration analysis proves the absence of trap at the time of migration and accumulation. However, geophysical, geological, and geochemical shreds of evidence suggest that the spatial distribution of the events provides valuable guidance for the development of the area.

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Using Biodegradation to Date Hydrocarbon Entry Into Reservoirs: Examples From the Cooper/Eromanga Basin, Australia

Cited by 2 publications

References 0 publications

Hydrocarbon prospectivity of the Cooper Basin, Australia

Hydrocarbon prospectivity of the Cooper Basin, Australia

An integrated evaluation approach on dry hole analysis: A case study of Ballat anticline, Naccowlah Block, Eromanga Basin, Queensland, Australia

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