Deflocculation and thermal stability evaluation in KCl-polymer water-based drilling fluid
BioDrill TM100 deflocculation laboratory data
A KCl drilling fluid was prepared using pre-hydrated bentonite treated with KCl to produce a drilling fluid with the following characteristics: 9.3 ppg; 14 ppb KCl; 27 ppb API bentonite. The pH was adjusted to 10.5 and hot-rolled for 24 hours at 160°C.
Key takeaways:
- BioDrill® TM100 reduces apparent viscosity and yield point even after ageing at 160°C.
- Gelling is significantly reduced
BioDrill TM100 in KCl drilling fluid
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KCl Base Fluid |
KCl Base Fluid w/ |
KCl Base Fluid w/ |
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3.5 ppb BioDrill TM100 |
3.5 ppb BioDrill TM100 |
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Hot-rolled 160°C for 24h |
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Apparent viscosity, cP |
28 |
13 |
9 |
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Plastic viscosity, cP |
5 |
5 |
6 |
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Yield Point, lbs/100ft2 |
45 |
15 |
5 |
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10” gel, lbs/100ft2 |
17 |
12 |
6 |
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10’ gel, lbs/100ft2 |
10 |
10 |
20 |
