CP-3 Economy rheological additive for Drilling
CP-3 Economy rheological additive for Drilling
An economical rheological additive designed for diesel, clean mineral oil, and synthetic olefin-based drilling fluids to enhance carrying capacity and improve hole cleaning performance.
Composition of CP-3 Economy rheological additive for Drilling
Alkyl quaternary ammonium bentonite
Typical Properties
| Sieve passing (200 mesh/74μm) | 85 % |
| Specific Gravity | 1.6 |
| Loss on ignition (1 h, 1000 ℃) | 37 % |
| Packaging | 25 kg bags |
| Supplied as | Free-flowing powder |
Applications of CP-3 Economy rheological additive for Drilling
Oil-Based Drilling Fluids
CP–3 is an economy organo-modified clay rheological additive suitable for use in a range of base oils. In addition to imparting excellent rheological properties, it increases the carrying capacity and hole cleaning capabilities of the drilling fluid. CP-3 also has the secondary benefit of providing stability to inverse emulsions and improving filtration control. CP-3 disperses easier and yields faster than alternative products, therefore, it is well suited for mud plant conditions.
Recommended Use
CP–3 is recommended for non-aqueous drilling fluids where the bottom hole temperatures do not exceed 300 °F (150 °C). CP–3 is also suitable for use in packer fluids.
Example formulation: 11.0 pounds/gallon 75/25 Diesel
| Diesel #2 | 217 ml |
| CP–3 | 6 g |
| Lime | 3 g |
| EnvaMul 1699 | 4 g |
| CaCl₂ (25% in water) | 79 ml |
| Barite | 150 g |
| OCMA (drill solids) | 20 g |
| Silverson homogenizer at 6,000 rpm | Shear 5 min. |
Results of aging test
| Property | Initial | 16 h at 150°F | 16 h at 250°F |
| 600 rpm reading | 52 | 61 | 51 |
| 300 rpm reading | 37 | 42 | 33 |
| 200 rpm reading | 31 | 35 | 32 |
| 100 rpm reading | 24 | 27 | 23 |
| 6 rpm reading | 14 | 16 | 13 |
| 3 rpm reading | 11 | 13 | 10 |
| Plastic Viscosity (cP) | 16 | 19 | 20 |
| Yield Point (lb/100 ft²) | 22 | 23 | 21 |