In drilling fluid configuration, polyacrylamide PAM and polyanionic cellulose PAC are common thickeners and colloidal stabilizers. The choice of which one to use depends on the specific drilling fluid system and needs.

Polyacrylamide (PAM) has high thickening ability and water solubility, and is often used to increase the viscosity and suspension of drilling fluids and improve the lubricity and cooling effect of drilling fluids. It can also prevent well wall collapse and control bottom hole pressure by forming a uniformly dispersed particle structure. Polyacrylamide also maintains stability under high temperature conditions.

Polyanionic cellulose (PAC) has good colloidal stability and thickening ability, which can increase the viscosity and cohesion of drilling fluid. It has a certain improvement effect on the suspended solid phase and lubrication properties of drilling fluid. Polyanionic cellulose has poor stability under high temperature conditions and is not suitable for high temperature drilling conditions.

Therefore, when choosing between pam or pac, you need to consider the following factors:

- Characteristics and target performance requirements of drilling fluid systems

- Temperature and other environmental conditions of the formation being drilled

- Quality, price and availability of thickeners

The best choice should be based on the specific drilling project and engineering requirements to obtain the most suitable option. 😊