@article{eage:/content/journals/10.1144/petgeo.5.1.37, author = "Al-Siyabi, Z. and Danesh, A. and Tohidi, B. and Todd, A. C.", title = "Variation of gas-oil-solid contact angle with interfacial tension", journal= "Petroleum Geoscience", year = "1999", volume = "5", number = "1", pages = "37-40", doi = "https://doi.org/10.1144/petgeo.5.1.37", url = "https://www.earthdoc.org/content/journals/10.1144/petgeo.5.1.37", publisher = "European Association of Geoscientists & Engineers", issn = "1354-0793", type = "Journal Article", abstract = "Contact angle has a major influence on the distribution of multi-phase fluids within petroleum reservoir rocks. However, there is little information on the variation of gas-oil-rock contact angle with pertinent parameters in the literature. In this study, it has been observed that the contact angle is almost constant at high gas-oil interfacial tension (IFT) above a threshold value and declines at a variable rate, depending on the volatility of the mixture, approaching zero at the critical point. The generated data were used to develop a generalized correlation between the contact angle and IFT and other measurable parameters of the system.", }