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Cristin-resultat-ID:
1877703
Sist endret:
14. september 2021, 12:58
NVI-rapporteringsår:
2021
Resultat
Vitenskapelig artikkel
2021
Pore-scale modelling of three-phase capillary pressure curves directly in uniformly wet rock images
Yingfang Zhou
Dimitrios Georgios Hatzignatiou
Johan Olav Helland
Zhao Yulong
og
Jianchao Cai
Tidsskrift
Tidsskrift
Geofluids
ISSN 1468-8115
e-ISSN 1468-8123
NVI-nivå 1
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Om resultatet
Om resultatet
Vitenskapelig artikkel
Publiseringsår: 2021
Publisert online: 2021
Trykket: 2021
Volum: 2021
Artikkelnummer: 6622079
Open Access
Lenker
Lenker
original online (doi)
https://doi.org/10.1155/2021/6622079
Importkilder
Importkilder
Scopus-ID: 2-s2.0-85099617025
Beskrivelse
Beskrivelse
Engelsk
Tittel
Pore-scale modelling of three-phase capillary pressure curves directly in uniformly wet rock images
Sammendrag
In this work, we developed a semianalytical model to compute three-phase capillary pressure curves and associated fluid configurations for gas invasion in uniformly wet rock images. The fluid configurations and favorable capillary entry pressures are determined based on free energy minimization by combining all physically allowed three-phase arc menisci. The model was first validated against analytical solutions developed in a star-shaped pore space and subsequently employed on an SEM image of Bentheim sandstone. The simulated fluid configurations show similar oil-layer behavior as previously imaged three-phase fluid configurations. The simulated saturation path indicates that the oil-water capillary pressure can be described as a function of the water saturation only. The gas-oil capillary pressure can be represented as a function of gas saturation in the majority part of the three-phase region, while the three-phase displacements slightly reduce the accuracy of such representation. At small oil saturations, the gas-oil capillary pressure depends strongly on two-phase saturations.
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Bidragsytere
Bidragsytere
Yingfang Zhou
Forfatter
ved Southwest University
Forfatter
ved University of Aberdeen
Dimitrios Georgios Hatzignatiou
Forfatter
ved University of Houston
Johan Olav Helland
Forfatter
ved NORCE Energi og teknologi ved NORCE Norwegian Research Centre AS
Zhao Yulong
Forfatter
ved Southwest University
Jianchao Cai
Forfatter
ved China University of Petroleum, Bejing
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