High-performance water-based drilling fluid system
Inhibit reactive clays, encapsulate cuttings, and prevent accretion and bit balling.
ULTRACAP encapsulating shale inhibitor provides minimal viscosity contribution and can enhance filtration properties. Due to the low molecular weight of this polymer, the mixing process requires less shear than polymers with higher molecular weights. The resulting fluid passes through fine shaker screens without blinding.
ULTRACAP inhibitor 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. This inhibitor limits dilution rates and low-gravity solids loading by preventing clay solids from dispersing into the mud system.
It is used in ULTRADRIL high-performance water-based drilling fluid system based on fresh- and saline-water environments but should not be used in calcium brines.
|Typical Physical Properties
||ULTRACAP Inhibitor||ULTRACAP PLUS Inhibitor
||Solid white flakes
||2.5 to 6.0 (0.05% solution)
||~6.0 (0.1% solution)
||1.5 to 3.0 lb/bbl [4.28 to 8.56 kg/m3]
||0.5 to 4 lb/bbl [1.43 to 11.41 kg/m3]|
||<4 to 5 lb/bbl [11.4 to 14.3 kg/m3]
||<4 to 5 lb/bbl [11.4 to 14.3 kg/m3]|
Low-molecular-weight, dry acrylamide copolymer that provides cuttings encapsulation and clay dispersion inhibition.
Effectively inhibits shale or gumbo clays from hydrating and minimizes the potential for bit balling.
Limits dilution rates and low-gravity solids loading by preventing clay solids from dispersing into the mud system.