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![Pebble shale oils can be distinguished from Hue-GRZ oils by high bicadi...]()
![Representative mass chromatograms (mass-to-charge ratio [m/z] = 191, 217, a...]()
![—Mass fragmentograms m/z 191 and 217 from gas chromatography–mass spectrome...]()
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![Typical mass chromatograms of mass-to-charge ratio ( m / z ) 191 (terpanes)...]()
![Crossplot of trans-trans-trans- <span class="search-highlight">bicadinane</span> (T)/C 30 hopane versus pristan...]()
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![Mass chromatograms of mass-to-charge ratio ( m / z ) 191 (terpanes), m / z...]()
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![Mass selective detector (MSD) GC-MS m / z 191 mass chromatogram of a deep...]()
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![The m / z 217.20 mass chromatograms of the liquid hydrocarbon samples fro...]()
![The mass-to-charge ratio (M/Z) 191 mass chromatogram of saturated hydrocarb...]()
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![Representative m / z 191 and 217 mass fragmentograms showing the correlat...]()
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bicadinanes
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Pebble shale oils can be distinguished from Hue-GRZ oils by high bicadi...
Published: 01 June 2014
Figure 9 Pebble shale oils can be distinguished from Hue-GRZ oils by high bicadinane - T / ( bicadinane- T + hopane ) and C 24 tetracyclic / C 26 tricyclic ratios. The Hue-GRZ-designated oil sample Seismic Line B19 has an elevated bicadinane ratio
Image
![Representative mass chromatograms (mass-to-charge ratio [m/z] = 191, 217, a...](https://gsw.silverchair-cdn.com/gsw/Content_public/Journal/aapgbull/101/9/10.1306_11071614117/1/s_bltn14117f5.png?Expires=2147483647&Signature=c7SKo2qMQE95~UMTMmzU8Hw-jzvN3AUSrFdE-dXXp4CbtR3OVlHl5reWf4tvP-OgxL0sGCd3NNeo8V9iANXtwsQpf33PACbjShEMkGN5v7aw6ISB2UTa8-3K-srinCGO1jti4X3YQVM3uctK0GN53BOuQjOIkVU7He1ziCp~l0Tou2lYCSYfFOzLJw7W0Cwb9mlV~MRAaHaArUM4oiGvG4kMiFyh6QgR5keEAsEcCZwczfMksVOjAFZPj827EyGuvACfSRg55b6uzwy9tbLCddVxqbglXvBDh8AtCgwcUS8PFfFxdF6pya91HAPX7TgbEFtxSkciM~Xtn6MsIPZb2w__&Key-Pair-Id=APKAIE5G5CRDK6RD3PGA)
Representative mass chromatograms (mass-to-charge ratio [m/z] = 191, 217, a...
in Geochemical characteristics, origins, and model of lacustrine source rocks in the Zhu 1 depression, eastern Pearl River Mouth Basin, South China Sea
> AAPG Bulletin
Published: 01 September 2017
Figure 5. Representative mass chromatograms (mass-to-charge ratio [m/z] = 191, 217, and 412) of saturate fractions for different stratigraphic intervals in the Zhu 1 depression. Note various assemblages of 4-methylsteranes and bicadinanes for samples taken from the Wenchang and Enping Formations
Image
—Mass fragmentograms m/z 191 and 217 from gas chromatography–mass spectrome...
in Geology, Compositional Heterogeneities, and Geochemical Origin of the Yacheng Gas Field, Qiongdongnan Basin, South China Sea
> AAPG Bulletin
Published: 01 July 1998
Figure 9 —Mass fragmentograms m/z 191 and 217 from gas chromatography–mass spectrometry analysis of condensate from well Y1 (3573–3586 m depth). T = trans-trans-trans-bicadinane, W = cis-cis-trans-bicadinane, OLE = oleanane. Peaks labeled by dots are unrecognized triterpanes.
Journal Article
Origin of Beach-Stranded Tars from Source Rocks Indigenous to Seychelles
Journal: AAPG Bulletin
Publisher: American Association of Petroleum Geologists
Published: 01 March 1996
AAPG Bulletin (1996) 80 (3): 323–339.
... in paralic to open-marine environments. The presence of minor oleanane and bicadinane, and a general preponderance of diasteranes and tricyclic terpanes in the hard tar suggest derivation from a Late Cretaceous clastic source rock with possible carbonate interbeds. By contrast, no samples of the malleable...
FIGURES
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Journal Article
Geochemistry, origin, and deep-water exploration potential of natural gases in the Pearl River Mouth and Qiongdongnan basins, South China Sea
Journal: AAPG Bulletin
Publisher: American Association of Petroleum Geologists
Published: 01 June 2009
AAPG Bulletin (2009) 93 (6): 741–761.
... basin are characterized by high contents of benzene and toluene and relatively heavy δ 13 C 2 values (−25 to −27‰). The associated condensates have a high abundance of bicadinanes and oleanane, providing a good correlation with the coal-bearing sequence of the Oligocene Yacheng Formation in the basin...
FIGURES
| View All (15)
Journal Article
Umir Formation: Organic Geochemical and Stratigraphic Assessment as Cosource for Middle Magdalena Basin Oil, Colombia
Journal: AAPG Bulletin
Publisher: American Association of Petroleum Geologists
Published: 01 December 2002
AAPG Bulletin (2002) 86 (12): 2069–2087.
...); diasteranes/steranes ratios greater than 1; 22,29,30-(trisnor-18α-neohopane/trisnor-17α-hopane) (T s /T m ) ratios less than 0.46; and relatively low C 35 /C 34 hopane values (<0.94). Values of the bicadinane index of 0.15-0.25 in Umir samples sharply contrast with those of La Luna samples, which...
FIGURES
| View All (13)
Journal Article
Geology, Compositional Heterogeneities, and Geochemical Origin of the Yacheng Gas Field, Qiongdongnan Basin, South China Sea
Journal: AAPG Bulletin
Publisher: American Association of Petroleum Geologists
Published: 01 July 1998
AAPG Bulletin (1998) 82 (7): 1372–1384.
...Figure 9 —Mass fragmentograms m/z 191 and 217 from gas chromatography–mass spectrometry analysis of condensate from well Y1 (3573–3586 m depth). T = trans-trans-trans-bicadinane, W = cis-cis-trans-bicadinane, OLE = oleanane. Peaks labeled by dots are unrecognized triterpanes. ...
FIGURES
| View All (14)
Image
Typical mass chromatograms of mass-to-charge ratio ( m / z ) 191 (terpanes)...
in Petroleum charge history in the Baiyun depression and Panyu lower uplift in the Pearl River Mouth Basin, northern South China Sea: Constraints from integration of organic geochemical and fluid inclusion data
> AAPG Bulletin
Published: 15 June 2019
Figure 5. Typical mass chromatograms of mass-to-charge ratio ( m / z ) 191 (terpanes), m / z 217 (steranes), and m / z 412 (bicadinanes) for the gas condensates and oil in the Baiyun depression and the Panyu lower uplift. C 27 ααα 20R = 5α(H),14α(H),17α(H)(20R)-cholestane; C 28 ααα 20R = 24
Image
Crossplot of trans-trans-trans- bicadinane (T)/C 30 hopane versus pristan...
in Hydrocarbon-generation potential of upper Eocene Enping Formation mudstones in the Huilu area, northern Pearl River Mouth Basin, South China Sea
> AAPG Bulletin
Published: 01 July 2018
Figure 12. Crossplot of trans-trans-trans- bicadinane (T)/C 30 hopane versus pristane/phytane (Pr/Ph) of Enping Formation mudstone in Huilu area, northern Pearl River Mouth Basin. HZ = Huizhou; LF = Lufeng.
Journal Article
Oil-source correlation in the Yangjiang Uplift, South China Sea: A comparative analysis of mathematical and fingerprint methods
Journal: Interpretation
Publisher: Society of Exploration Geophysicists
Published: 24 June 2024
Interpretation (2024) 12 (3): T273–T288.
... of bicadinane-T (T)/C 30 hopane and ΣC 30 -4 methyl sterane/ΣC 29 regular sterane and another with a low ratio of (C 19 TT + C 20 TT)/C 23 TT according to the charting method. The investigated crude oil is mixed with the source rocks of the Wenchang A Sag and the Yangjiang Uplift. Furthermore, owing...
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Journal Article
Geochemical characteristics, origins, and model of lacustrine source rocks in the Zhu 1 depression, eastern Pearl River Mouth Basin, South China Sea
Journal: AAPG Bulletin
Publisher: American Association of Petroleum Geologists
Published: 01 September 2017
AAPG Bulletin (2017) 101 (9): 1543–1564.
...Figure 5. Representative mass chromatograms (mass-to-charge ratio [m/z] = 191, 217, and 412) of saturate fractions for different stratigraphic intervals in the Zhu 1 depression. Note various assemblages of 4-methylsteranes and bicadinanes for samples taken from the Wenchang and Enping Formations...
FIGURES
| View All (10)
Journal Article
Geochemical characteristics and analysis of crude-oil source in the deep-water area of the Baiyun Sag, South China Sea
Journal: Russian Geology and Geophysics
Publisher: Novosibirsk State University
Published: 01 May 2018
Russ. Geol. Geophys. (2018) 59 (5): 499–511.
... and bicadinanes were detected in the oil samples, indicating that organic matter in the Baiyun Sag originated from terrigenous higher plants ( Alberdi and López, 2000 ; Zhu et al., 2008 ). A low content of tricyclic terpanes, dominated by C 19 tricyclic terpane, is observed in oil samples, while a high content...
FIGURES
| View All (13)
Image
Mass chromatograms of mass-to-charge ratio ( m / z ) 191 (terpanes), m / z...
in Petroleum charge history in the Baiyun depression and Panyu lower uplift in the Pearl River Mouth Basin, northern South China Sea: Constraints from integration of organic geochemical and fluid inclusion data
> AAPG Bulletin
Published: 15 June 2019
Figure 3. Mass chromatograms of mass-to-charge ratio ( m / z ) 191 (terpanes), m / z 217 (steranes), and m / z 412 (bicadinanes) for the source rocks from the (A) Wenchang (E 2 w), (B and C) Enping (E 2 e), and (D and E) Zhuhai Formations (E 2 z). C 27 ααα 20R = 5α(H),14α(H),17α(H)(20R
Journal Article
Naphthides of continental hydrotherms (Uzon, Yellowstone, New Zealand) : Geochemistry and genesis
Journal: Russian Geology and Geophysics
Publisher: Novosibirsk State University
Published: 01 May 2014
Russ. Geol. Geophys. (2014) 55 (5-6): 726–736.
... (Kamchatka). diaS 27 –diaS 29 , diasteranes (10α, 13β, 17α, 20R, and 20S); regular steranes: bioS 27 –bioS 29 , native (bio) steranes (5α, 14α, 17α, and 20R); S 27 –S 29 , geosteranes (5α, 14β, 17β, 20R, and 20S), intermediate structures (5α, 14α, 17α, and 20S). A, B, C, and D, bicadinane and its isomers...
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| View All (5)
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Mass selective detector (MSD) GC-MS m / z 191 mass chromatogram of a deep...
in Leaves in turbidite sands: The main source of oil and gas in the deep-water Kutei Basin, Indonesia
> AAPG Bulletin
Published: 01 October 2006
Figure 7 Mass selective detector (MSD) GC-MS m / z 191 mass chromatogram of a deep-water Kutei Basin oil (A) and condensate (B) illustrating an abundance of land-plant biomarkers, including oleananes (OL), bicadinanes (W and T) and lupanoids (L).
Journal Article
Origin of Petroleum in Bangladesh
Journal: AAPG Bulletin
Publisher: American Association of Petroleum Geologists
Published: 01 April 2002
AAPG Bulletin (2002) 86 (4): 625–652.
... 25+ wax range provides an initial indication of extensive terrigenous organic matter input to the source rock for these liquids. Additional indications are the relatively high pristane/phytane ratios for these samples (3.6-7.1; Table 3 ) and the occurrence of bicadinanes in most liquids...
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| View All (21)
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The m / z 217.20 mass chromatograms of the liquid hydrocarbon samples fro...
Published: 01 April 2002
Figure 20 The m / z 217.20 mass chromatograms of the liquid hydrocarbon samples from (a) the Jalalabad-1 (2503 m) and (b) the Kailas Tila-2 (3107 m) wells. Peaks for the cis-cis-trans and trans-trans-trans bicadinanes are labeled, as are the peak clusters for the methycholestanes (C 28
Image
The mass-to-charge ratio (M/Z) 191 mass chromatogram of saturated hydrocarb...
in Modeling of petroleum generation in the Vietnamese part of the Malay Basin using measured kinetics
> AAPG Bulletin
Published: 01 April 2011
Figure 3 The mass-to-charge ratio (M/Z) 191 mass chromatogram of saturated hydrocarbons in the 46-NH-1x oil showing hopanes and other triterpanes. Inset shows the distribution of C 29 hopanes (M/Z 398 → 191), C 30 hopanes and other C 30 triterpanes (M/Z 412 → 191), and bicadinanes (M/Z 412
Journal Article
Hydrocarbon-generation potential of upper Eocene Enping Formation mudstones in the Huilu area, northern Pearl River Mouth Basin, South China Sea
Journal: AAPG Bulletin
Publisher: American Association of Petroleum Geologists
Published: 01 July 2018
AAPG Bulletin (2018) 102 (7): 1323–1342.
...Figure 12. Crossplot of trans-trans-trans- bicadinane (T)/C 30 hopane versus pristane/phytane (Pr/Ph) of Enping Formation mudstone in Huilu area, northern Pearl River Mouth Basin. HZ = Huizhou; LF = Lufeng. ...
FIGURES
| View All (17)
Image
Representative m / z 191 and 217 mass fragmentograms showing the correlat...
in Geochemistry, origin, and deep-water exploration potential of natural gases in the Pearl River Mouth and Qiongdongnan basins, South China Sea
> AAPG Bulletin
Published: 01 June 2009
Figure 8 Representative m / z 191 and 217 mass fragmentograms showing the correlation of gas condensates with potential source rocks. PRM = Pearl River Mouth; QDN = Qiongdongnan; W and T = bicadinanes; ol = oleanane; Pr/Ph = pristine/phytane; Ts = 18α(H)-22,29,30-trisnorneohopane; Tm = 17α(H
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