CaCO₃
Calcium Carbonate — CaCO₃ Weighting & Bridging
Acid-soluble weighting and bridging material used in drill-in fluids, LCM pills and selected cementing / completion applications.
Application
Reservoir drill-in fluids, lost-circulation bridging, and density control where acid solubility is required. Particle size distribution (e.g. fine, medium, coarse) must be specified.
Technical characteristics (quality certificate)
Typical values as stated on a mill quality certificate (passport) for a standard commercial grade. Actual lot values are confirmed in the COA / TDS for the selected manufacturer.
CaCO₃ content
≥ 95%
Industrial / bridging grade
Specific gravity
2.6–2.8
Manufacturer TDS
Particle size distribution
Per LCM grade (fine / medium / coarse)
API RP 13I / field SOP
Reference profile for orientation. For each supply we confirm grade, origin and certificate data against your specification, well conditions and delivery requirements.
Typical functions
- Acid-soluble weighting
- Bridging / LCM
- Filter cake that can be removed by acid
- Selected spacer and cement applications
Product information
- Chemical name
- Calcium Carbonate (ground / sized)
- Formula / class
- CaCO₃
- Appearance
- White to off-white powder or granules. Size distribution is the primary technical parameter.
- Packaging
- Bags or jumbo bags according to fraction and volume.
CaCO3 for oilfield use is defined by PSD, acid solubility and impurities, not by a generic “chalk” description. Different fractions are not interchangeable.
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