An integral part of the UltraDril Plus™ premium-performance aqueous drilling fluid system (AFS), UltraSorb Plus™ premium-performance shale encapsulator is a low molecular weight, dry acrylic acid copolymer that provides excellent cuttings encapsulation and clay dispersion inhibition. This versatile system is effective across a range of base brines, including seawater, saturated NaCl, and KCl. The encapsulation capabilities of UltraSorb Plus shale encapsulator achieve optimum performance in highly inhibitive water-based drilling fluids, such as the UltraDril™ high-performance water-based drilling fluid system and HydraGlyde™ high-performance water-based drilling fluid system.

In both onshore and offshore environments, UltraSorb Plus shale encapsulator provides excellent cuttings encapsulation by adsorbing onto the clay surfaces and forming a protective film that prevents cuttings from sticking to each other or to the shaker screens. It limits dilution rates and low-gravity solids loading by preventing clay solids from dispersing into the mud system.

• Provides excellent cuttings encapsulation and limits cuttings dispersion
• Improves removal of drill solids by reducing dispersion tendencies
• Boosts shale stabilization
• Contributes only minimal viscosity to the system
• Adds easily to the active system through a premix
• Enhances control of highly dispersive shales (kaolinite and illite) in high-pH fluids

• Limits dilution rates and low-gravity solids loading by preventing clay solids from dispersing into the mud system
• Delivers high performance in a wide range of base brines including seawater and saturated NaCl
• Provides lower screen blinding potential compared with higher molecular weight encapsulators
• Requires less shear in the mixing process than polymers with higher molecular weights