HD-1 is a high-density weighting agent synthesized from various metals, and processed by ultra-linear processing and ultra-fine spheroidization technology.
The particle size is 200~250 meshes, and the density is greater than 7.4, and its specific gravity is much higher than that of the traditional barite weighting agent 4.6~5.05. It has a good spherical particle shape and appearance, and the drilling fluid weighting agent can be recycled and completely acidified, and the acidification rate can reach 94.5%. After being used in cementing cement slurry, it has good dispersion and suspension, and the density of cement slurry can reach 2.4~2.8g/cm3.
In drilling and production operations, not only water-based mud but also oil-based mud can be prepared, and its performance is superior to that of a traditional weighting agent.
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Technical indicators: |
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physical condition |
Black-gray powder |
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density |
6.8~7.0g/cm³ |
7.0~7.1g/cm³ |
7.1~7.2g/cm³ |
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fineness |
120~140 mesh |
140~180 mesh |
200~350 mesh |
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Chemical composition(%) |
Fe |
≥96.52% |
>95.80% |
≥95.50% |
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Sio2 |
≤0.65% |
≤0.78% |
≤0.81% |
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C |
≤0.14% |
≤0.17% |
≤0.18% |
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S |
≤0.05% |
≤0.04% |
≤0.03% |
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P |
≤0.06% |
≤0.06% |
≤0.02% |
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particle size distribution |
140 mesh sieve residue ≤ 15% and 180 mesh sieve residue ≤10% |
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PH |
7 |
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Suggested dosage |
Cement content is 30-95% |
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Item |
Traditional weighting agent |
HD-1 high density weighting agent |
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Compatibility of cement slurry |
Generally |
excellent |
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Fineness, mesh |
80~120 |
200~300 |
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Fineness,g/cm³ |
4.60~5.05 |
6.8~7.2 |
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Density of cement slurry that can be prepared,g/cm³ |
≤2.4 |
<2.8 |
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Prepare cement slurry 2.4g/cm³,with the dosage of BW0C% |
108~110 |
88~92 |
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Cement slurry 2.4g/cm³，compressive strength MPa(24h,68°C) |
13.8 |
18.2 |
Performance characteristics
1.The density is higher than that of the existing weighting agent, and the density of the prepared cement slurry reaches 2.4~2.8g/cm3.
2.Prepare cement slurry with the same density, and the dosage is less than the existing traditional weighting agent, thus saving the cost. Suitable for national standard G-grade and A-grade oil well cement.
3.The weighting agent of the prepared high-density oil-based drilling fluid can be recycled and completely acidified.
4.The prepared cementing fluid has good dispersibility and suspension, and its fluidity and stability have good coordination.
5. API24-hour cement paste strength is higher than that of traditional weighting agent.
Product packaging
1. 25kg/ bag, outer woven bag lined with plastic film.
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