Zhang Ji-fen

Wettability Alteration of Coals with Different Coal Ranks Induced by Fluorocarbon Surfactant FS-61

Abstract Coal wettability strongly influences coalbed methane (CBM) recovery and water-block damage in coal reservoirs. Wettability reversal from hydrophilic to hydrophobic is therefore an effective approach for improving CBM production. In this study, low-rank long-flame coal, m...