Use of HD-1 high density weighting agent
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.
high density weighting agent
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Technical indicators:
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physical condition
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Black-gray powder
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density
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6.8~7.0g/cm³
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7.0~7.1g/cm³
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7.1~7.2g/cm³
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fineness
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120~140 mesh
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140~180 mesh
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200~350 mesh
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Chemical composition(%)
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Fe
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≥96.52%
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>95.80%
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≥95.50%
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Sio2
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≤0.65%
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≤0.78%
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≤0.81%
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C
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≤0.14%
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≤0.17%
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≤0.18%
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S
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≤0.05%
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≤0.04%
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≤0.03%
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P
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≤0.06%
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≤0.06%
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≤0.02%
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particle size distribution
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140 mesh sieve residue ≤ 15% and 180 mesh sieve residue ≤10%
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PH
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7
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Suggested dosage
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Cement content is 30-95%
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Introduction of high density weighting agent
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Item
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Traditional weighting agent
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HD-1 high density weighting agent
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Compatibility of cement slurry
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Generally
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excellent
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Fineness, mesh
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80~120
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200~300
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Fineness,g/cm³
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4.60~5.05
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6.8~7.2
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Density of cement slurry that can be prepared,g/cm³
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≤2.4
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<2.8
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Prepare cement slurry 2.4g/cm³,with the dosage of BW0C%
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108~110
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88~92
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Cement slurry 2.4g/cm³，compressive strength MPa(24h,68°C)
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13.8
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18.2
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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.
