High-performance water-based drilling fluid system

It includes the main agent CSSA, which is an amine-based polymer inhibitor, the cross-linked polysaccharide polymer CS-TROL, and the high-molecular-weight amine-based polymer CS-102. The high-performance water-based drilling fluid system has excellent rheological properties and a wide temperature range. It can be used for drilling in complex formations such as shale-rich areas and formations containing high levels of acidic gases (CO2, H2S, etc.) and meets the environmental requirements of harsh regions. Adding treatment agents for waterproofing compounds to the high-performance water-based drilling fluid system results in a high-performance water-based drilling fluid system suitable for deepwater and ultra-deepwater operations.