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Enping Formation

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Journal Article
Journal: AAPG Bulletin
Published: 01 July 2018
AAPG Bulletin (2018) 102 (7): 1323–1342.
...Junwen Peng; Xiongqi Pang; Hesheng Shi; Huijie Peng; Shuang Xiao ABSTRACT Upper Eocene Enping Formation mudstones in the Pearl River Mouth Basin, South China Sea, which formed during a lake-flooding event, are one of the most important sets of cap rocks in the basin. However, the generation...
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Schematic and conceptual <span class="search-highlight">formation</span> model of <span class="search-highlight">Enping</span> <span class="search-highlight">Formation</span> source rocks i...
Published: 01 July 2018
Figure 16. Schematic and conceptual formation model of Enping Formation source rocks in the Huilu area, Pearl River Mouth Basin.
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Crossplot of  T max   versus hydrogen index of <span class="search-highlight">Enping</span> <span class="search-highlight">Formation</span> mudstone in...
Published: 01 July 2018
Figure 8. Crossplot of T max versus hydrogen index of Enping Formation mudstone in Huilu area, northern Pearl River Mouth Basin. Template modified from Espitalié (1985). HC = hydrocarbon; HZ = Huizhou; I = type I kerogen; II = type II kerogen; III = type III kerogen; LF = Lufeng; R o
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Organic maceral characteristics of <span class="search-highlight">Enping</span> <span class="search-highlight">Formation</span> mudstones in the northe...
Published: 01 July 2018
Figure 9. Organic maceral characteristics of Enping Formation mudstones in the northern Pearl River Mouth Basin (data from Zhu et al., 2007 ). Note that wells Huizhou (HZ) 8, HZ 23, and Xijiang (XJ) 24 are located in Huilu area ( Figure 1 ), whereas wells XJ 33 and Panyu (PY) 33 are located
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Gas and mass chromatograms of <span class="search-highlight">Enping</span> <span class="search-highlight">Formation</span> (E 2 e) mudstones from the H...
Published: 01 July 2018
Figure 11. Gas and mass chromatograms of Enping Formation (E 2 e) mudstones from the Huilu area: (A), (D), (G), and (J) show distribution characteristics of tricyclic terpanes (mass-to-charge ratio [ m/z ] 191); (B), (E), (H), and (K) show distribution characteristics of steranes ( m/z 217); (C
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Thickness distribution of <span class="search-highlight">Enping</span> <span class="search-highlight">Formation</span> source rocks in the Huilu area, ...
Published: 01 July 2018
Figure 15. Thickness distribution of Enping Formation source rocks in the Huilu area, Pearl River Mouth Basin (contour values in meters; modified from Peng et al., 2016 ). HZ = Huizhou; LF = Lufeng; XJ = Xijiang.
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—Isopach map of the <span class="search-highlight">Enping</span> <span class="search-highlight">Formation</span> in the Zhu III subbasin.
Published: 01 June 1999
Figure 13 —Isopach map of the Enping Formation in the Zhu III subbasin.
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—Organic matter maturity of the <span class="search-highlight">Enping</span> <span class="search-highlight">Formation</span> in the Wenchang A sag, Zhu...
Published: 01 June 1999
Figure 16 —Organic matter maturity of the Enping Formation in the Wenchang A sag, Zhu III subbasin.
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—Elemental composition of kerogens of the <span class="search-highlight">Enping</span> <span class="search-highlight">Formation</span> in the Wenchang ...
Published: 01 June 1999
Figure 14 —Elemental composition of kerogens of the Enping Formation in the Wenchang A sag, Zhu III subbasin.
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—The dicardarane of oil and source rock of the <span class="search-highlight">Enping</span> <span class="search-highlight">Formation</span> in the Wenc...
Published: 01 June 1999
Figure 15 —The dicardarane of oil and source rock of the Enping Formation in the Wenchang A sag (from Gong et al., 1997 ).
Journal Article
Journal: AAPG Bulletin
Published: 01 September 2017
AAPG Bulletin (2017) 101 (9): 1543–1564.
..., is characterized by two thick, Paleogene, organic-rich synrift units, the Wenchang and Enping Formations. The integration of bulk geochemical and biomarker data with tectonic and sedimentary information provides the basis for a comprehensive assessment of the environmental and ecological changes through geologic...
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Journal Article
Journal: AAPG Bulletin
Published: 15 April 2021
AAPG Bulletin (2021) 105 (4): 749–783.
... of Wenchang Formation–sourced gas of high thermal maturity with Enping Formation–sourced oil-associated gas of relatively low thermal maturity resulted in relatively lighter carbon isotopes of the reservoired gases compared to the fluid inclusion gases. Gas mixing could have occurred during the main Enping...
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(A) Variation of methane δ 13 C versus ethane δ 13 C for fluid inclusion ga...
Published: 15 April 2021
, Qiongdongnan Basin (QDN), are from Hao et al. (1998 , 2000) . Coal-type gases from the Middle–Lower Jurassic coal measures in the Tarim, Junggar, and Turpan–Hami Basins and from the Upper Triassic Xujiahe Formation coal measure in the Sichuan Basin are from Dai et al. (2014) . (B) The mixing of the Enping
Journal Article
Published: 01 May 2018
Russ. Geol. Geophys. (2018) 59 (5): 499–511.
.... Crude oil in the northern area of the Baiyun Sag is more mature than samples in the eastern part of the sag. Despite limited source rock data, we were able to conclude that the crude oil samples were derived mainly from the Enping Formation; other potential source rocks of the Wenchang and Zhuhai...
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Journal Article
Journal: AAPG Bulletin
Published: 01 June 2009
AAPG Bulletin (2009) 93 (6): 741–761.
.... In contrast, the gases from the PRM basin contain lower amounts of benzene and toluene and lighter δ 13 C 2 values (−24 to −34‰). Widely variable concentrations of bicadinane and oleanane were identified from the associated condensates, which can be mostly correlated with the lower Oligocene Enping Formation...
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Activation energy distributions for four source rock types determined by an...
Published: 15 April 2021
source rock from well PY5-8-1 (oil-prone type II kerogen), which was used to model the hydrocarbon generation history of the semideep-water and deep-water lacustrine facies source rocks in the Wenchang Formation in the Baiyun depression. (B) Enping Formation source rock from well HZ8-1-1 (gas-prone type
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Surface distribution of oil sources in the Baiyun Sag. I, organic matter (O...
Published: 01 May 2018
Fig. 13. Surface distribution of oil sources in the Baiyun Sag. I, organic matter (OM) derived from the Enping Formation, primarily; II, OM derived from the Enping and Wenchang Formations; III, OM derived from the Wenchang Formation, primarily; IV, OM derived from the Enping and Zhuhai Formations
Journal Article
Journal: AAPG Bulletin
Published: 01 June 1999
AAPG Bulletin (1999) 83 (6): 990–1003.
...Figure 13 —Isopach map of the Enping Formation in the Zhu III subbasin. ...
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Journal Article
Journal: AAPG Bulletin
Published: 01 November 2018
AAPG Bulletin (2018) 102 (11): 2171–2200.
... the heavy hydrocarbon gases (propane, butanes, and pentanes) are derived from both the Wenchang and Enping (type III kerogen) Formations, based on an integrated comparison of carbon isotopic compositions of the natural gases, typical type I/II and type III kerogen-derived gases, and the Enping and Wenchang...
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GC-MS TIC,  m / z  191 and  m / z  217 traces of five oil samples represent...
Published: 01 May 2018
Fig. 12. GC-MS TIC, m / z 191 and m / z 217 traces of five oil samples representing different sources. S1-EP, single source from the Enping Formation; S1-WC, single source from the Wenchang Formation; M1, mixed sources from the Enping and Wenchang Formation; M2, mixed sources from the Enping