2026/06/12
Differences and Principles of PAC (Polyanionic Cellulose) and CMC (Sodium Carbox
Nearshore, overseas projects, brine wells, deep wells, directional wells → PAC is necessary
Shallow onshore freshwater wells, limited budget → CMC can be used to reduce costs
For low mud viscosity and water loss control → PAC-LV
For increasing viscosity, including sand, while controlling water loss → PAC-HV