Defoamer formulation and methods for making and using same
AssigneeClearwater International, LLC
InventorsOlusegun Matthew Falana, Marshall C. Edward, Frank Zamora
Life of this patent
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Abstract
Defoamer compositions are disclosed and methods for making and using same, where the defoamer has universal applicability at low concentrations. The defoamer compositions include between 40 vol. % and about 80 vol. % distilled water (other waters may be used instead), 10 vol. % and about 30 vol. % of silicon anti-foam agent and between about 10 vol. % and about 30 vol. % of active silicon anti-foam agent. The defoamer compositions are used in amount of less than or equal to 200 ppm in all foamed downhole fluid systems.
Claims20
A defoamer composition comprising, on a volume basis:
- between about 40 vol. % and about 80 vol. % distilled water and/or other waters,
- between about 10 vol. % and about 30 vol. % of silicon anti-foam agent and
- between about 10 vol. % and about 30 vol. % of active silicon anti-foam agent,
- where the composition is stable at temperatures up to about 450° F. and is effective at concentration of less than or equal to 500 ppm in all foamed fluids used in downhole applications.
A method comprising:
- adding an effective amount of a defoamer composition to a foamed fluid, where the amount is sufficient to result in a clean break of the foamed fluid, where the defoamer composition includes on a volume basis between about 40 vol. % and about 80 vol. % distilled water (other waters may be used instead), between about 10 vol. % and about 30 vol. % of silicon anti-foam agent and between about 10 vol. % and about 30 vol. % of active silicon anti-foam agent, where the defoaming composition is stable at temperatures up to about 450° F. and where the defoamer composition permits repeated foam-defoam recycles.
Dependencies are inferred from the claim text.