cationic polyacrylamide anti-clay swelling agent – industry

cationic polyacrylamide anti-clay swelling agent – industry
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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.
  • Can cationic Gemini Surfactants reduce clay swelling?
  • Water-based drilling fluids are extensively used for drilling oil and gas wells. However, water-based muds cause clay swelling, which severely affects the stability of wellbore. Due to two adsorption positions, it is expected that cationic gemini surfactants can reduce the clay swelling.
  • 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 ).
  • 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.