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一种部分水解聚丙烯酰胺-聚丙烯酸钠钾盐的共聚物，它有很强的页岩抑制作用，故除用增稠剂、包被剂外，还用做抑制剂。常以0.5%～1%的水溶液形式使用，其抗温性能可达160～180℃。在钻井液中的加量为0.1%～0.3%.
KPAM is a copolymer of partially hydrolyzed polyacrylamide/polyacrylate potassium. It is a white to yellowish polymer powder. KPAM has a powerful shale inhibition capacity besides its viscosifying/encapsulating effect. It is soluble in fresh, brackish or salt water. Recommended dosage is in the range of 0.1~0.3% in water base drilling fluid.
Recommended dosage is in the range of 0.1~0.3% in water base drilling fluid.
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