Barite Weighting Agent for Drilling Fluids
CAS Number: 13462-86-7
API-grade barite (barium sulfate) is the industry-standard weighting agent for increasing the density of water-based and oil-based drilling fluids to control formation pressure and prevent wellbore kicks. With a specific gravity of 4.2 g/cm³, it allows mud density to be raised up to 2.65 g/cm³ (22.0 ppg) without excessive solids loading. API-grade barite meets the stringent specifications of API 13A for soluble Ba, Cd, Hg, and Pb content.
Technical Specifications
| appearance | White to off-white fine powder |
| specific gravity | ≥4.20 |
| BaSO₄ content (%) | ≥95.0 |
| soluble barium (mg/kg) | ≤250 |
| screen residue on 75 μm (%) | ≤3.0 |
Applications
- Water-based drilling fluid density increase
- Oil-based and synthetic-based mud weighting
- Pressure control in high-pressure well sections
- Kill fluid preparation
- Offshore and deepwater high-pressure drilling
Key Features
- API 13A compliant — meets global drilling contractor specifications
- High specific gravity (4.2) enables high mud weight with low volume addition
- Chemically inert — compatible with all mud types
- Low heavy metal content meets environmental discharge requirements
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