Shaanxi Shangnan County Dongzheng Chemical Co., Ltd. 
Molecular Formula: CaCO₃
Molecular Weight: 100.09
Appearance: Free-flowing fine white powder
Physicochemical Properties:
Ultrafine calcium carbonate is a high-purity product obtained by finely grinding natural calcium carbonate ore. It appears as a white powder, non-toxic and odorless, with micron-sized particle distribution. It offers high fineness, purity, and thickening performance.
Technical Specifications of Ultrafine Calcium Carbonate
| Item | Specification | ||
| Type I | Type II | ||
| Density, g/cm³ | 2.70 ± 0.10 | 2.50 ± 0.10 | |
| Calcium Carbonate Content, % ≥ | 97.0 | ||
| Particle Size Distribution | > 20 μm, % ≤ | 20.0 | 5.0 |
| < 2 μm, % ≤ | 30.0 | 40.0 | |
| X50 (Median Particle Diameter), μm | 4.0-10.0 | 2.0-4.0 | |
Applications:
Widely used in oilfield drilling materials, coatings, plastics, rubber, papermaking, and other industries. In drilling fluids, it can improve drilling fluid properties, reduce formation damage, purify mud, and minimize contamination, which contributes to enhanced drilling efficiency, reduced costs, and better environmental protection.
Specific Functions:
1. Reduce Formation Damage
During drilling, mud properties may affect formations and even cause damage. Ultrafine calcium carbonate helps purify drilling mud and mitigate acid-based corrosion, thereby reducing formation damage.
2. Improve Drilling Fluid Stability
Drilling fluid stability is critical during operations. Ultrafine calcium carbonate enhances the stability of drilling fluids, preventing stratification and sedimentation.
3. Reduce Mud Contamination
Mud contamination can negatively impact the environment. With its strong adsorption capacity, ultrafine calcium carbonate can adsorb contaminants, purify mud, and reduce pollution.
Product Advantages:
1. Non-toxic and environmentally friendly, meeting ecological standards.
2. High efficiency and safety, effective for controlling downhole formations.
3. Improves drilling rate and depth, significantly enhancing drilling efficiency.
4. High density, good stability, free of contaminants.
Usage and Dosage:
Exact dosage should be determined based on geological conditions and well depth. Recommended dosage: 1%–5%.
Packaging:
25 kg/bag, packed in three-in-one composite kraft paper bags (customized packaging available upon request).
Storage Conditions:
Store in a dry, cool, and ventilated warehouse. Keep protected from moisture during storage and transport.
