Composition and placement process for oil field chemicals

Details Composition and placement process for oil field chemicals Composition and placement process for oil field chemicals

1988-09-14

1991-01-22

Stoll, Robert L.

Wells

Processes

Material placed in pores of formation to treat resident...

166922, 252 8551, 252 8552, 252 8553, 252 8555, 42840221, 42840224, E21B 4316, E21B 4102, E21B 3706

Patent

active

049863541

ABSTRACT:
Oil field chemicals are incorporated in microcapsules of the condensation product of hydroxyacetic acid or the co-condensation product of hydroxyacetic acid and other compounds containing hydroxy-, carboxylic acid-, or hydroxycarboxylic acid moieties. The microcapsules are then introduced into an oil well bore and/or subterranean oil formation where the microcapsules dissolve over a period of time and release the oil field chemicals.

REFERENCES:
patent: 2676945 (1954-04-01), Higgins
patent: 3574132 (1971-04-01), Mosier et al.
patent: 3666678 (1972-05-01), Mosier et al.
patent: 4272398 (1981-06-01), Jaffe
patent: 4585482 (1986-04-01), Tice et al.
patent: 4670166 (1987-06-01), McDougall et al.
patent: 4741401 (1988-05-01), Walles et al.

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