| Customization: | Available |
|---|---|
| Appearance: | White Fine Powder |
| Specific Gravity: | 1.5 |
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SHARKSTAR® PLUS carboxymethyl starch is an anionic starch ether product. Compared with pre-gelatinized starch, SHARKSTAR® PLUS has higher water solubility and stronger chemical stability. SHARKSTAR® PLUS can maintain long-term stable fluid loss control in high-salt and high-temperature drilling conditions up to 250°F. But not resistant to high calcium and magnesium ions. SHARKSTAR® PLUS can increase viscosity, is soluble in cold water, and forms a transparent viscous solution. It can be used as a thickener and stabilizer in most water-based drilling fluid systems, especially in saturated saltwater drilling fluids and low-solid-phase drilling fluids.
| Test Items | Specification | Result | |
| Suspension properties: Apparent Viscosity tested by Fann 35. Hot rolling @ 190°F(88°C) for 16hrs | Initial: test AV @ 120°F(49°C) | 25 max | 19 |
| Test after hot rolling | 25 max | 16 | |
| Suspension properties: Filtrate Volume. Hot rolling @ 190°F(88°C) for 16hrs | Initial: test API filtrate loss @ 120°F(49°C) | 10.0 max | 8.6 |
| Test after hot rolling | 10.0 max | 8.4 | |
| Moisture content, % | 12.0 max | 8.2 | |
| pH (1% Solution) | 6.5 - 8.0 | 7.5 | |
| Residue on 40-mesh screen, % | 2.0 max | 1.6 | |
| Conclusion | Pass | ||
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