Liquid condensation in the reservoir near a wellbore may kill gas production in gas-condensate reservoirs when pressure drops lower than the dew point. It is clear from investigations reported in the literature that gas production could be improved by altering the rock wettability from liquid-wetness to gas-wetness. In this paper, three different fluorosurfactants FG1105, FC911, and FG40 were evaluated for altering the wettability of sandstone rocks from liquid-wetting to gas-wetting using contact angle measurement. The results showed that FG40 provided the best wettability alteration effect with a concentration of 0.3% and FC911 at the concentration of 0.3%.
Y. Wang et al., "Wettability Alteration of Sandstone by Chemical Treatments," Journal of Chemistry, Hindawi Publishing Corporation, Aug 2013.
The definitive version is available at http://dx.doi.org/10.1155/2013/845031
Geosciences and Geological and Petroleum Engineering
International Standard Serial Number (ISSN)
Article - Journal
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