干旱区生态环境知识资源中心(Arid): Depositional dynamics of the Devonian rocks and their influence on the distribution patterns of liptinite in the Sifa-1X well, Western Desert, Egypt: Implications for hydrocarbon generation

Arid

DOI	10.1016/j.marpetgeo.2021.104935
	Depositional dynamics of the Devonian rocks and their influence on the distribution patterns of liptinite in the Sifa-1X well, Western Desert, Egypt: Implications for hydrocarbon generation
	Makled, Walid A.; Gentzis, Thomas; Hosny, Atef M.; Mousa, Doaa A.; Lotfy, Mostafa M.; Abd El Ghany, Ahmed A.; El Sawy, Marwa Z.; Orabi, Ahmed A.; Abdelrazak, Heba A.; Shahat, Wafaa, I
通讯作者	Makled, WA (corresponding author), Egyptian Petr Res Inst EPRI, Explorat Dept, 1 Ahmed Zomor St, Cairo 11727, Egypt.
来源期刊	MARINE AND PETROLEUM GEOLOGY
ISSN	0264-8172
EISSN	1873-4073
出版年	2021
卷号	126
英文摘要	Samples from the Devonian succession in the Sifa-1X well located mid-way between the Egyptian Faghur Basin and the Libyan Cyrenaica Platform were examined in this study. The distribution of liptinite group macerals was investigated under reflected and transmitted light microscopy. Diverse and abundant liptinites of terrigenous and marine origin were identified. The palynological investigations included analysis of the miospores assemblages and palynofacies categories by multiple statistical approaches in addition to calculation of the sedimentation rates. These analyses signified four miospores biotopes and three palynofacies biotopes that were used to assess the ramps of paleoclimatological and paleoenvironmental changes during sedimentation. These biotopes were used to define a model of liptinite maceral distribution throughout the Devonian in the study area. The model suggested two different phases of basinal dynamics in terms of climate, sea level, and sedimentation rates, namely an Early-Middle Devonian transgressive phase and a Late Devonian regressive phase. Conditions during the Early-Middle Devonian transgressive phase were oxic to dysoxic with low sedimentation rates and oxic during the Late Devonian regressive phase. Oxygen depletion was under the threshold required to induce significant preservation of the quantity and quality of organic matter, including liptinite macerals. The redox conditions were confirmed by trace element analysis. The high oxygen level affected both the quantity and quality of the liptinite macerals and greatly reduced the preservation of the amorphous organic matter. The quality of the organic matter varied from kerogen type I, II, mixed types II/III and type III. The mixture of these kerogen types was assessed by organic elemental and pyrolysis gas chromatography analyses. In addition, the entire Devonian succession in the Sifa-1X well is in the oil window, as also indicated by miospore coloration. This indicates that the organic matter in the Devonian strata have the potential to generate oil and gas.
英文关键词	Devonian Western Desert of Egypt Biotopes Palynofacies Liptinite macerals
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000620660300001
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/351112
作者单位	[Makled, Walid A.; Mousa, Doaa A.; Lotfy, Mostafa M.; Abd El Ghany, Ahmed A.; El Sawy, Marwa Z.] Egyptian Petr Res Inst EPRI, Explorat Dept, 1 Ahmed Zomor St, Cairo 11727, Egypt; [Gentzis, Thomas] Core Labs Inc, 6316 Windfern Rd, Houston, TX 77040 USA; [Hosny, Atef M.; Orabi, Ahmed A.; Abdelrazak, Heba A.] Al Azhar Univ, Geol Dept, Assiut Branch, Assiut, Egypt; [Shahat, Wafaa, I] Zagazig Univ, Geol Dept, Zagazig 44519, Sharkia, Egypt
推荐引用方式 GB/T 7714	Makled, Walid A.,Gentzis, Thomas,Hosny, Atef M.,et al. Depositional dynamics of the Devonian rocks and their influence on the distribution patterns of liptinite in the Sifa-1X well, Western Desert, Egypt: Implications for hydrocarbon generation[J],2021,126.
APA	Makled, Walid A..,Gentzis, Thomas.,Hosny, Atef M..,Mousa, Doaa A..,Lotfy, Mostafa M..,...&Shahat, Wafaa, I.(2021).Depositional dynamics of the Devonian rocks and their influence on the distribution patterns of liptinite in the Sifa-1X well, Western Desert, Egypt: Implications for hydrocarbon generation.MARINE AND PETROLEUM GEOLOGY,126.
MLA	Makled, Walid A.,et al."Depositional dynamics of the Devonian rocks and their influence on the distribution patterns of liptinite in the Sifa-1X well, Western Desert, Egypt: Implications for hydrocarbon generation".MARINE AND PETROLEUM GEOLOGY 126(2021).