Potassium Polyacrylamide KPAM is an anionic polymer. Due to it’s long enough molecular chain, the molecule contains amide group and potassium carboxylate group, more adsorption groups and potassium ions, so it can prevent the hydration expansion and dispersion of strong water-sensitive shale and clay, and at the same time, it can adsorb the loose components with weak bonding force such as illite, so as to strengthen the effect of shaft lining stability and make the caliper regular.
KPAM has a strong ability to inhibit formation slurry and easy to control drilling fluid density to ensure the good performance of drilling fluid and safety. It is beneficial to improve the penetration rate, log smoothly and shorten the well construction period, thus greatly reduce the cost of drilling fluid treatment and drilling cost. Favorable Protects oil and gas reservoirs.
The KPAM has high cost-effectiveness and extensive applications, which can be applied in fresh water drilling fluid and saltwater drilling fluid. It can play a role in low density drilling fluid and high density drilling fluid, and has good compatibility with various drilling additives.
| Molecular weight, millions | Charge density | Potassium content | Chloride |
| 4-6 | ±30 | ≥11% | ≤5% |