| GWA 1 | Ilmenite, inert mineral, utilized to increase slurries density from 17.0 to 20.0 lb./gal; concentration is from 5 to 50 lb./sk of cement, slurry densities; no extra water is needed for wetting; specific gravity = 4.45. |
| GWA 2 | Coarse-grind hematite, inert; increases slurry densities from 17.0 to 19.0 lb./gal; concentrations is from 5 to 35 lb./sk of cement; extra water needed for wetting; specific gravity = 4.95. |
| GWA 3 | Barite utilized to increase slurries density from 16.0 to 17.5 lb./gal; ideal concentrations is from 4 to 50 lb./sk of cement; extra water is needed for wetting; specific gravity = 4.20. |
| GWA 100 | Silica sand, 100 mesh, increases slurries density, reactive above 230°F (110°C); combats strength retrogression, optimum concentration is 35% BWOC; specific gravity = 2.65. |
| GWA 200 | Silica flour, 200 mesh, increases slurries density; reactive above 230°F (110°C); combats strength retrogression, optimum concentration 35% BWOC; extra water needed for wetting; specific gravity = 2.65. |
Specialty Oil Field Additives