Determination of paleo-pressure for a natural gas pool formation based on PVT characteristics of fluid inclusions in reservoir rocks ?? A case study of Upper-Paleozoic deep basin gas trap of the Ordos Basin

2004 ◽  
Vol 47 (6) ◽  
pp. 507 ◽  
Author(s):  
Jingkui MI
Keyword(s):  
Natural Gas ◽  
Fluid Inclusions ◽  
Ordos Basin ◽  
Deep Basin ◽  
Reservoir Rocks ◽  
Upper Paleozoic ◽  
The Ordos Basin ◽  
Pool Formation

A case study: evaluating low-porosity and ultra-low-permeability Triassic reservoir rocks in the Ordos Basin by the integration of logs and core

2017 ◽  
Vol 23 (4) ◽  
pp. 454-465 ◽  
Author(s):  
Fengqi Tan ◽  
Rui Zhao ◽  
Yangyang Zhao ◽  
Zhejun Pan ◽  
Hongqi Li
Keyword(s):  
Ordos Basin ◽  
Low Permeability ◽  
Reservoir Rocks ◽  
The Ordos Basin ◽  
Low Porosity

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 Natural Gas Accumulation Characteristics in the Linxing Area, Ordos Basin, NW China: Revealed from the Integrated Study of Fluid Inclusions and Basin Modeling

Geofluids ◽  
2020 ◽  
Vol 2020 ◽  
pp. 1-28
Author(s):  
Yong Shu ◽  
Shuxun Sang ◽  
Yuxiang Lin ◽  
Huiming Zheng
Keyword(s):  
Natural Gas ◽  
Fluid Inclusions ◽  
Thermal Evolution ◽  
Ordos Basin ◽  
Petrographic Analysis ◽  
Basin Modeling ◽  
Gas Accumulation ◽  
Upper Paleozoic ◽  
Gradual Process ◽  
Accumulation Characteristics

The Linxing area is located in the north of the eastern margin of the Ordos Basin, which has great resource potential for tight gas. In this paper, fluid inclusion analysis and basin modeling are the main means to clarify the gas accumulation mechanism of the Upper Paleozoic in the Linxing area. Petrographic analysis shows that fluid inclusions can be classified into 5 types: aqueous inclusions, hydrocarbon-bearing aqueous inclusions, hydrocarbon inclusions, crystal-bearing aqueous inclusions, and aqueous-carbonic inclusions. According to the statistical analysis of homogenization temperature and salinity of fluid inclusions, combined with the burial-thermal evolution, the study area was divided into 3 areas: the inner-magma baking area, the middle-anomal thermal area, and the outer-normal thermal area. The gas accumulation characteristics are differences among the 3 areas, the closer to Zijinshan magmatic pluton, the earlier gas accumulation period; and the vertical gas accumulation in the inner-magma baking area and the middle-anomal thermal area was not a slow and gradual process from bottom to top. The period from the Middle Jurassic to the Early Cretaceous is the key period for rapid pressure accumulation in the Upper Paleozoic reservoirs, which is consistent with the period of natural gas accumulation. The area near the Zijinshan magmatic pluton was the high fluid potential area during the gas accumulation period, which indicates that natural gas and other fluids migrated from Zijinshan magmatic pluton to the surrounding area. It is concluded that in the Linxing area, the Zijinshan magmatic pluton had a significant impact on natural gas accumulation, and the natural gas accumulation model under the control of magmatic thermal-tectonic effect was proposed.

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