1. drilling mud additive 2. polymer viscosifier 3. fluid loss reducer 4. easily soluble in water 5. hydrolyzed degree 20-30

Partial Hydrolyzed Polyacrylamide PHPA for Drilling

1. Property

PHPA is short for Partial Hydrolyzed Polyacrylamide, also known as the 3rd cohesion agent. It is a linear water soluble polymer, molecular formula being CONH2 [CH2ch] n, and molecular weight between 5 to 22 million. PHPA appears as white or colorless granule, viscous gellike, odorless, neutral, and is soluble in water.

2. Quality Indexes

Items	Indexes
Appearance	White granule
Molecular weight	16-20 million (for drilling)
Hydrolyzed degree,%	20-30
PH	7-14

phpa poly acrylamide