Organic petrography and thermal maturity of the Permian Roseneath and Murteree shales in the Cooper Basin, Australia

Jadoon, Quaid Khan; Roberts, Eric M.; Blenkinsop, Thomas G.; Wüst, Raphael A.J.

doi:10.1016/j.coal.2016.01.005

Cited by 14 publications

(1 citation statement)

References 20 publications

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“…They of ten form source rocks for hy dro car bons and are ex ploited world wide (Dyni, 2006;Karnkowski et., 2010;Lin et al, 2013;Sliaupa et al, 2016;Kosakowski et al, 2016;Panja and Velasco, 2018;Mecellari and Whaley, 2019;Mengying and Xinkai, 2021), con trib ut ing to eco nomic growth. Wide spread geo log i cal in ter est in shale petro leum sys tems is fo cused on such rocks as lac us trine shales from var i ous parts of the world (Jadoon et al, 2016;Hackley et al, 2016;Liu et al, 2017;Ghazwani et al, 2019;Goodarzi et al, 2019). In China, it is es ti mated that more than 85% of hy drocar bon re serves orig i nated in lac us trine set tings (Gra ham et al, 1990;Demaison and Huizinga, 1991;Carrol et al, 1992;Lin et al, 2013;Hackley et al, 2017;Huijuane al., 2018).…”

Section: Introductionmentioning

confidence: 99%

Petrographic, palynological and geochemical recognition of dispersed organic matter in the black Anthracosia Shales (Sudetes, south-west Poland)

NOWAK¹,

GÓRECKA-NOWAK²,

Karcz

2022

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As so ci ate Ed i tor: Dariusz Wiêc³aw We de scribe the or ganic pe trog ra phy, palynology and Rock-Eval py rol y sis val ues of lac us trine black shales termed the Anthracosia Shales (Up per Car bon if er ous/Lower Perm ian) in the Intrasudetic Ba sin (Sudetes, SW Po land). Sam ples were taken from cores of two bore holes: Rybnica Leoena PIG 1 and OEcinawka OErednia PIG 1. Maceral com po si tion, miospore assem blage com po si tion, palynofacies and geo chem i cal char ac ter is tics of dis persed or ganic mat ter in the Anthracosia Shales were used to de ter mine con di tions of the en vi ron ment and to eval u ate their pe tro leum po ten tial. Data from both or ganic petrog ra phy and palynology anal y ses en abled rec og ni tion of three broadly dis tinct or ganic as so ci a tions in these shales: bi tu minous, humic, and in ter me di ate, while Rock-Eval py rol y sis re vealed the pres ence of bi tu mi nous and humic kerogen types I and III. Type I cor re sponds to the bi tu mi nous as so ci a tion, with amor phous or ganic mat ter (AOM) dom i nant in the palynofacies, and type III cor re sponds to the humic as so ci a tion with phytoclasts pre vail ing in the palynofacies. The ther mal ma tu rity of the or ganic mat ter is de ter mined by the val ues of: (1) vitrinite reflectance V Ro = 0.53-0.73%, (2) palynomorph 3-4 col our in dex, and (3) T max = 443-447°C, which in di cate oil win dow ma tu rity. Some of the TOC re sults (1.6-2.9 wt.%) in di cate that the Anthracosia Shales are good and very good pe tro leum source rocks, though the thick ness of this in ter val is low (4-5 m). Shales with TOC val ues <0.5 wt.% pre vail, and may be classifed as poor source rocks.

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Section: Introductionmentioning

confidence: 99%

Petrographic, palynological and geochemical recognition of dispersed organic matter in the black Anthracosia Shales (Sudetes, south-west Poland)

NOWAK¹,

GÓRECKA-NOWAK²,

Karcz

2022

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The Birkhead and Murta formations—organic geochemistry and organic petrography of Mesozoic fluvio-lacustrine source rocks in the Eromanga Basin, central Australia

Röth

Baniasad

Froidl

et al. 2022

Int J Earth Sci (Geol Rundsch)

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Due to a historic focus on the underlying Cooper Basin and a growing demand for energy in Australia, a reassessment of the Eromanga Basin in central and eastern Australia is necessary, including a more detailed characterization of its Jurassic-Cretaceous petroleum system elements. The Jurassic Birkhead Formation and the Cretaceous Murta Formation are considered the most important source rocks of the Eromanga Basin. To study the petroleum generation potential of these two formations, a set of 55 rock cores from eight petroleum exploration wells was analysed. The sample set was subject to multiple-organic geochemical and petrographical analyses to evaluate organic richness, hydrocarbon potential (Rock–Eval S1 and S2), maceral composition, thermal maturity (e.g. vitrinite reflectance), and saturated and aromatic biomarker composition. The investigated fluvio-lacustrine siltstones and carbonaceous shales exhibit low to excellent total organic carbon (TOC) content, very low sulphur and low inorganic carbon content. Thermal maturity of both formations is at the onset of the oil window (immature to early mature). The Cretaceous Murta Formation shows good hydrocarbon generation potential and, in part, high production indices, while the Jurassic Birkhead Formation generally shows low kerogen to bitumen conversion and a good to very good hydrocarbon generation potential. Dispersed, rather coarse organic matter of terrigenous origin in fine-grained siliciclastic matrix with well-preserved plant remnants including “cutinite flames” is typical. Liptinite (mainly lamalginite) content is generally higher in the Murta Formation (including the occurrence of Botryococcus green algae), while vitrinite is clearly dominant in the Birkhead Formation. The Birkhead solvent extracts exhibit a more heterogeneous distribution of n-alkanes with distinct maxima in the long-chain range, whereas shorter-chain n-alkanes dominate the Murta extracts. Based on their quality and quantity of incorporated organic matter as well as thermal maturity, the petroleum generation potential of the Murta and Birkhead formations is discussed in detail.

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Black shale deposition during the Paleocene–Eocene thermal maximum: shale-gas potential of the Patala Formation, Himalayan fold-and-thrust belt, Pakistan (eastern Tethys)

Khan,

Littke,

Weltje

et al. 2024

Int J Earth Sci (Geol Rundsch)

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Organic petrography and thermal maturity of the Permian Roseneath and Murteree shales in the Cooper Basin, Australia

Cited by 14 publications

References 20 publications

Petrographic, palynological and geochemical recognition of dispersed organic matter in the black Anthracosia Shales (Sudetes, south-west Poland)

Petrographic, palynological and geochemical recognition of dispersed organic matter in the black Anthracosia Shales (Sudetes, south-west Poland)

The Birkhead and Murta formations—organic geochemistry and organic petrography of Mesozoic fluvio-lacustrine source rocks in the Eromanga Basin, central Australia

Black shale deposition during the Paleocene–Eocene thermal maximum: shale-gas potential of the Patala Formation, Himalayan fold-and-thrust belt, Pakistan (eastern Tethys)

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