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Standards: ISO 13500:1998,GB/T5005-2001
Drilling bentonite with sodium, calcium bentonite strict implementation of the Chinese National Standards: GB/T5005-2001 (eqv ISO 13500:1998), has a good suspension, thixotropy and filtration a small amount of mud performance is good, the preparation of convenient, easy to adjust the drilling fluid weight and other characteristics, is essential for deep and ocean drilling an ideal base material. |
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Drilling bentonite
| Requirement |
Standard |
API bentonite |
| Suspension properties |
|
|
| Viscometer dial reading at 600r/min |
Min.30
|
35
|
| Yield point/plastic viscosity Ratio |
Max.3
|
2.4
|
| Filtrate volume |
Max.15.0 cm3
|
12.0cm3
|
| Residue of diameter greater than 75um |
Max.mass fraction 4.0%
|
3.0%
|
|
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OCMA bentonite
| Requirement |
Standard |
OCMA bentonite |
| Suspension properties |
|
|
| Viscometer dial reading at 600r/min |
Min.30 |
35
|
| Yield point/plastic viscosity Ratio |
Max.6 |
4.0
|
| Filtrate volume |
Max.16.0 cm3 |
12.0cm3
|
| Residue of diameter greater than 75um |
Max.mass fraction 2.5% |
2.0%
|
| moisture |
Max.mass fraction 13.0% |
11.0%
|
|
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Technical specification for Drilling Extended Bentonite
| Requirement |
Standard |
| Suspension properties |
|
| Viscometer dial reading at 600r/min |
Min.35.0 |
| Yield point/plastic viscosity Ratio |
Max.4.0 |
| Filtrate volume |
Max.15.0 cm3 |
| Residue of diameter greater than 75um |
Max.mass fraction 4% |
| moisture |
Max.mass fraction 10.0% |
| Dosage |
50%API Bentonite |
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