Surfactant additive for oilfield acidizing

Earth boring – well treating – and oil field chemistry – Earth boring – Contains organic component

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562 74, 507200, 507255, 507923, 507933, 1662523, E21B 4322, C07C14930, C07C14346

Patent

active

055433871

ABSTRACT:
Subterranean oil-bearing formations are treated with aqueous acid solutions which include an effective amount of an alkoxylated alkyl substituted phenol sulfonate which exhibits both antisludge and demulsification properties.

REFERENCES:
patent: 2828334 (1958-03-01), Groote
patent: 4018278 (1977-04-01), Shupe
patent: 4073344 (1978-02-01), Hall
patent: 4574050 (1986-03-01), Crowe et al.
patent: 4823874 (1989-04-01), Ford
patent: 4959490 (1990-09-01), Livermore et al.
SPE Paper No. 25185; Ashpaltene Stabilization in Alkyl Solvents Using Oil Soluble Amphiphiles; Chang et al, 1993.
Acidizing Fundamentals, Williams et al, pp. 95 and 96 (1979).

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