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BDC-101 is a non-toxic, high-molecular-weight cationic polymer solution. It is used as a cementing additive preventing the formation of gas channels and gas migration in the annular space during cementing operations or when setting cement plugs. The agent should only be used with anionic cement additives such as lignosulfonate retarders or slurry friction reducers. Laboratory testing is recommended to determine the type of friction reducer, so as to prevent synergy effects or polymer precipitation from the solution. BDC-101 freezes at -10°C, which can be lowered by adding methanol. The maximum temperature at which BDC-101 can be used is 90°C.
The recommended dosage of BDC-101 is 5–20 litres per 100 kg of dry cement, depending on its type and quality.
Generally 10 litres is sufficient, but the optimal dose should be determined by laboratory testing
before the job. If necessary, add a retarder to obtain adequate pumping time. If
needed, microsilica can also be added to improve slurry rheology.
1. Conduct laboratory tests under simulated field conditions in an HTHP consistometer and
an HTHP filter press.
2. Setting retarders can be added to obtain sufficient pumping time.
3. Finally, check whether the HTHP cement is settling.
Suggestion: test the slurry in the HTHP consistometer for some time, shorter than the final thickening time, and
then transfer the slurry both to the filter press and to the cement settling cylinder. If necessary,
microsilica can be added to improve rheology and/or settling. BDC-101 requires no
anticoagulant additives. The product can be used with Portland, slag and pozzolan cement, with bentonite
or attapulgite or without them, in fresh and salt water up to full saturation. Adding 2% calcium chloride to BDC-
101 improves its effectiveness.
1050 kg IBC containers or 120 kg drums – 5 drums per pallet.
Storage in closed containers at above-zero temperatures not exceeding 30°C.
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