01626nab a2200193 4500 20260520000927.0 260224s2011 xxu Effects of firing and chemical treatments on berea permeability and wettability ene./feb. 2011 01/04/2011 ; 01/04/2011 11 p. ; 197-207 Transcripción del resumen del autor. The alteration of the wettability from liquid-wetting to intermediate gas-wetting has great potential in improving gas well productivity, from mitigating water blocking to condensate banking in gas reservoirs. Even a small quantity of salt ions (such as Na+) in the initial saturation in rock has a detrimental effect on the alteration of the wettability by chemical treatments. The initial salt ions may cause clay release and permeability reduction. Berea cores are usually used in laboratory flow studies, including wettability alterations. In this work, we present a comprehensive study on the use of Berea, both unfired and fired, in single- and two-phase flows, with a focus on the salt and firing effect on the chemical treatment. Three fluoropolymeric surfactants are used. We find that one of the three, a nonionic surfactant, is effective in the alteration of wettability in the fired Berea (with and without salt in the initial saturation). The treatment efficiency of ionic surfactants is reduced in the presence of the initial salt. 1 Energy & fuels 25 ARTICULO Wu, Stanley 45027 Firoozabadi, Abbas 20045 174393 174393 0 0 0 0 242212 BAAB BAAB 2026-03-05 200052409 0 200052409 2026-03-05 16:11:49 2026-03-05 ARTICULO