scholarly journals Reconstructing large‐scale karst paleogeomorphology at the top of the Ordovician in the Ordos Basin, China: Control on natural gas accumulation and paleogeographic implications

2019 ◽  
Vol 7 (6) ◽  
pp. 3234-3254 ◽  
Author(s):  
Di Xiao ◽  
Xiucheng Tan ◽  
Liyong Fan ◽  
Daofeng Zhang ◽  
Wancai Nie ◽  
...  
Keyword(s):  
Natural Gas ◽  
Large Scale ◽  
Ordos Basin ◽  
Gas Accumulation ◽  
The Ordos Basin

scholarly journals Natural gas accumulation and models in Ordovician carbonates, Ordos Basin, NW China

2014 ◽  
Vol 41 (4) ◽  
pp. 437-448 ◽  
Author(s):  
Yanru GUO ◽  
Jinhua FU ◽  
Xinshan WEI ◽  
Wanglin XU ◽  
Liuyi SUN ◽  
...  
Keyword(s):  
Natural Gas ◽  
Ordos Basin ◽  
Nw China ◽  
Gas Accumulation

The influence of large-scale climate phenomena on precipitation in the Ordos Basin, China

2016 ◽  
Vol 130 (3-4) ◽  
pp. 791-805 ◽  
Author(s):  
Yu Zhong ◽  
Liyuan Lei ◽  
Youcun Liu ◽  
Yonghong Hao ◽  
Chris Zou ◽  
...  
Keyword(s):  
Large Scale ◽  
Ordos Basin ◽  
The Ordos Basin

scholarly journals Upper Paleozoic coal measures and unconventional natural gas systems of the Ordos Basin, China

2012 ◽  
Vol 3 (6) ◽  
pp. 863-873 ◽  
Author(s):  
Xuan Tang ◽  
Jinchuan Zhang ◽  
Yansheng Shan ◽  
Jinyu Xiong
Keyword(s):  
Natural Gas ◽  
Ordos Basin ◽  
Upper Paleozoic ◽  
Unconventional Natural Gas ◽  
The Ordos Basin ◽  
Coal Measures

scholarly journals The Shale Gas Accumulation of the Triassic Yanchang Formation in the Ordos Basin, China

2015 ◽  
Vol 89 (s1) ◽  
pp. 281-281 ◽  
Author(s):  
Fengqin WANG ◽  
Zhili DU ◽  
Hongjun LIU ◽  
Linpei FAN ◽  
Shenbao BAI ◽  
...  
Keyword(s):  
Shale Gas ◽  
Ordos Basin ◽  
Yanchang Formation ◽  
Gas Accumulation ◽  
The Ordos Basin

scholarly journals Genetic types and sources of Lower Paleozoic natural gas in the Daniudi gas field, Ordos Basin, China

2017 ◽  
Vol 35 (2) ◽  
pp. 218-236 ◽  
Author(s):  
Xiaoqi Wu ◽  
Jianhui Zhu ◽  
Chunhua Ni ◽  
Kuang Li ◽  
Yanqing Wang ◽  
...  
Keyword(s):  
Natural Gas ◽  
Ordos Basin ◽  
Source Rocks ◽  
Light Hydrocarbons ◽  
Upper Ordovician ◽  
Gas Field ◽  
Lower Paleozoic ◽  
Upper Carboniferous ◽  
Associated Gas ◽  
The Ordos Basin

The molecular composition, stable carbon and hydrogen isotopes, and light hydrocarbons of the Lower Paleozoic natural gas in the Daniudi gas field in the Ordos Basin were investigated to study the geochemical characteristics. The Lower Paleozoic gas in the Daniudi gas field displays methane contents of 87.41–93.34%, dryness coefficients (C1/C1–5) ranging from 0.886 to 0.978, δ13C1 and δ13C2 values ranging from −40.3 to −36.4‰, with an average of −38.3‰, and from −33.6 to −24.2‰, with an average of −28.4‰, respectively, and δD1 values ranging from −197 to −160‰. The alkane gas generally displays positive carbon and hydrogen isotopic series, and the C7 and C5–7 light hydrocarbons of the Lower Paleozoic gas are dominated by methylcyclohexane and iso-alkanes, respectively. The Lower Paleozoic gas in the Daniudi gas field is mixed from coal-derived and oil-associated gases, similar to that observed in the Jingbian gas field. The oil-associated gas in the Lower Paleozoic gas is secondary oil cracking gas and displays a lower cracking extent than that in the Jingbian gas field. The coal-derived gas in the Lower Paleozoic gas in the Daniudi gas field migrated from the Upper Paleozoic gas through the window area where the iron–aluminum mudstone caprocks in the Upper Carboniferous Benxi Formation were missing. The oil-associated gas in the Lower Paleozoic gas in the Daniudi gas field was probably derived from presalt source rocks in the Lower Ordovician Majiagou Formation rather than the limestone in the Upper Carboniferous Taiyuan Formation. It seems unlikely that the marlstone in the Upper Ordovician Beiguoshan Formation and shale in the Middle Ordovician Pingliang Formation on the western and southwestern margins of the Ordos Basin contributed to the oil-associated gas in the Lower Paleozoic gas in the Daniudi gas field.

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