Polyacrylamide (PAM) is a linear polymer with the chemical formula of (c3h5no) n. It is a hard glassy solid at room temperature. The products include glue, latex, white powder, translucent bead and sheet. Good thermal stability. It can be dissolved in water in any proportion, and the water solution is uniform and transparent. After long-term storage, the solution viscosity will decrease due to the slow degradation of polymer, especially when the storage and transportation conditions are poor. [1] as a lubricant, suspending agent, clay stabilizer, oil displacement agent, fluid loss reducer and thickener, polyacrylamide has been widely used in drilling, acidizing, fracturing, water plugging, cementing, secondary and tertiary oil recovery, and is a very important oilfield chemical

Polyacrylamide (PAM), one of the most widely used water-soluble polymers, is a general term for the copolymerization of acrylamide homopolymer or other monomers. Due to the amido group in the structural unit of polyacrylamide, easy to form hydrogen bond, good water solubility and high chemical activity, it is easy to graft or cross-linking to obtain a variety of branched chain or network structure modifiers. It has a wide range of applications in oil exploitation, water treatment, textile, paper making, mineral processing, medicine, agriculture and other industries. The main application fields abroad are water treatment, papermaking, mining, metallurgy, etc.