Canbensan produces drilling bentonite named as Canson both OCMA grade and API-13A grade.
Canson is naturally ocurring sodium bentonite, mined from specially selected ores which shows high swelling capacity. When added to rotary drilling fluid Canson improves performance in drilling, hole cleaning and hole stability. Canson is also used to seal and plug the holes.
Canson is naturally ocurring sodium bentonite, mined from specially selected ores which shows high swelling capacity. When added to rotary drilling fluid Canson improves performance in drilling, hole cleaning and hole stability. Canson is also used to seal and plug the holes.
Main Advantages;
- Canson will fill through standing a column of water and reach the bottom of the hole before swelling begins. Prevents bridging of the material to the wall of boreholes.
- Prevents the entry of surface water into boreholes.
- Aids in holding the explosive gas bumble downhole.
- Simple to apply and easier to apply than pellets.
Technical Specifications:
OCMA Grade| Moisture | 8-12% weight |
| Residue (Wet) |
2% max. |
| Viscometer Reading (at 600 rpm) |
30-40 cP |
| Filtrate Volume | 11-16 cm3 |
| Yield Point |
18-25 cP |
API-13A Grade
| Moisture | 9,5% weight |
| Residue (Greater than 75 mic) |
2,5% weight |
| Viscometer Reading (at 600 rpm) | 35 cP |
| Filtrate Volume | 14 cm3 |
| Yield Point |
21 cP |