| abstract |
Viscosified phosphate brine base fluids are disclosed, where the fluids include a hydratable polymer, have a density at or above about 10 lb/gal and a viscosity of at least 5 cP. Method for making and using the viscosified phosphate brine base fluids are also disclosed, including using the fluid in drilling, completing, and/or fracturing of oil and/or gas wells. |