cationic polyacrylamide anti-clay swelling agent in belgium

cationic polyacrylamide anti-clay swelling agent in belgium
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  • Does cationic polyacrylamide chloride inhibit clay swelling?
  • The best results were obtained for cationic polyacrylamide chloride with quaternary ammonium group at 7 lb/bbl (pounds per barrel) in KCl brine at 18.74 lb/bbl with contact time of brine and clay of 7.6 h. Solutions containing these combinations presented greater inhibition of clay swelling.
  • What is cationic polyacrylamide (CPAM) adsorption behavior?
  • Cationic polyacrylamide (CPAM), a typical drilling fluid shale inhibitor can prevent the clay swelling and maintain the wellbore stable. Understanding the adsorption behavior of CPAM on montmorillonite (MMT) surfaces is of great significance in explaining the excellent performance of cationic inhibitors.
  • Which organic additives are used as clay swelling inhibitors?
  • The main organic additives used as clay swelling inhibitors are cationic molecules containing quaternary ammonium groups in their structures ( Qu et al., 2009, Anderson et al., 2010, Peng et al., 2013, Zhong et al., 2013, Pham and Nguyen, 2014 ).
  • Which cationic polyacrylamide chloride inhibitor has the best cation exchange?
  • The best result was expected for INIB 2, because inhibitors which contain cationic polyacrylamide chloride with quaternary ammonium group have a very high charge density ( Smith et al., 2010 ), leading to a profitable cation exchange in the clay. Fig. 3.