Salt water well drilling fluid is a drilling fluid used when drilling operations in salt water environments. In order to improve the performance and stability of drilling fluids, it is often necessary to add some special chemicals.

Polyanionic cellulose (PAC) is a commonly used additive. PAC has good thickening properties and salt resistance, which can effectively increase the viscosity and suspension of drilling fluids and prevent well wall collapse and wellbore filling.

Adding polyanionic cellulose PAC to drilling fluid can effectively improve the stability of drilling fluid and reduce mud stratification and sedimentation. Therefore, the use of PAC in saltwater well drilling is a common practice and can improve the efficiency and safety of drilling operations.