AF
Defoamer — Antifoam for Drilling Fluids
Additive used to control foam and entrained air in water-based and selected oil-based drilling fluids.
Application
Surface and downhole foam control where aeration affects pump efficiency or mud properties. Product must be compatible with mud chemistry.
Technical characteristics (quality certificate)
Typical values as stated on a mill quality certificate (passport) for a standard commercial grade. Actual lot values are confirmed in the COA / TDS for the selected manufacturer.
Active ingredient
Silicone / ester / polyol per grade
Manufacturer TDS
Foam suppression
Effective at mud surface / low dosage
Field qualification
Dosage
0.1–0.5 lb/bbl (typical range)
Manufacturer TDS
Compatibility
WBM / OBM / SBM per grade
Manufacturer TDS
Reference profile for orientation. For each supply we confirm grade, origin and certificate data against your specification, well conditions and delivery requirements.
Typical functions
- Foam collapse
- Air entrainment control
- Surface handling improvement
Product information
- Chemical name
- Antifoam / defoamer for drilling fluids
- Formula / class
- AF
- Appearance
- Liquid concentrate or emulsion.
- Packaging
- Drums or IBCs.
Silicone and non-silicone defoamers differ in compatibility with polymers and solids. Do not assume interchangeability.
In this category
PAC-LV
PAC LV
Low-viscosity polyanionic cellulose used to control fluid loss in water-based drilling fluids with limited impact on rheology.
Open product →PAC-HV
PAC HV
High-viscosity PAC providing both fluid-loss control and additional viscosity in water-based drilling muds.
Open product →CMC
CMC
Cellulose ether used as a fluid-loss additive and viscosifier in water-based drilling fluids, available in LV and HV grades.
Open product →