Hydrolyzed Polyacrylonitrile Ammonium Salt for Industrial Applications

Hydrolyzed Polyacrylonitrile Ammonium Salt (NH4-HPAN) is a high-efficiency water-soluble anionic polymer drilling fluid additive, produced by high-temperature and high-pressure hydrolysis of polyacrylonitrile fiber. Containing multiple active functional groups such as ammonium carboxylate, amide and cyano groups, it features outstanding filtration reduction, high temperature resistance, salt contamination resistance and shale inhibition. It is a classic multi-functional treatment agent for water-based drilling mud, widely used in conventional wells, medium-deep wells and salt-bearing formation drilling operations, effectively controlling mud fluid loss, optimizing rheological performance and stabilizing wellbore walls.