Chemically cleaning drilling/completion/packer brines

Details Chemically cleaning drilling/completion/packer brines Chemically cleaning drilling/completion/packer brines

1981-10-13

1984-06-26

Guynn, Herbert B.

Compositions

Leather or fur treating

210727, 210728, 252 85B, E21B 4300, C09K 702

Patent

active

044565372

ABSTRACT:
A process for removing contaminating solids from high density, salt type aqueous drilling/completion/packer fluid prior to its introduction into a well bore. A small effective amount (e.g., 0.5% volume) of an aliphatic alcohol (e.g., n-hexanol) and a surface active chemical aid (e.g., bis hydroxy ethyl cetyl amine) are thoroughly intermixed into the fluid. After the solids agglomerate, the solids are separated from the fluid before introduction in a solids-free condition into the well bore. The fluid may have a density as high as 17 pounds per gallon and be a brine formed of the sodium, calcium or zinc salts with chloride or bromide anions.

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