Hot detergent process

Details Hot detergent process Hot detergent process

1976-12-23

1978-05-16

Fisher, Richard V.

Cleaning and liquid contact with solids

Processes

Hollow work, internal surface treatment

134 28, 134 29, 134 40, 166304, 166311, 252 855B, B08B 308, B08B 902

Patent

active

040897036

ABSTRACT:
Solid paraffin-containing material deposited on oil well surfaces are removed by contacting the deposited paraffin with an aqueous solution A composed of alkali metal metasilicate, tri(alkali metal) phosphate, tetrapotassium pyrophosphate, alkali metal hexametaphosphate, alkylphenol/ethylene oxide adduct, ethylene glycol monobutylether and methyl cellulose ether stabilizer and then adding to solution A, a solution B comprising concentrated sulfuric acid and a foam stabilizer.

REFERENCES:
patent: 139010 (1873-05-01), Looney
patent: 3076757 (1963-02-01), Knox et al.
patent: 3279541 (1966-10-01), Knox et al.
patent: 3342264 (1967-09-01), Willard
patent: 3395757 (1968-08-01), Crossland
patent: 4005020 (1977-01-01), McCormick

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