Method for stimulation of oil and gas wells

Details Method for stimulation of oil and gas wells Method for stimulation of oil and gas wells

1987-10-09

1989-12-12

Terapane, John F.

Compositions

Leather or fur treating

252 8553, E21B 3706, E21B 4327

Patent

active

048866091

ABSTRACT:
A method for the removal of scale from the interior of producing oil and gas wells is disclosed. The method comprises introducing a mixture of an aqueous mineral acid, a mutual solvent, and an alkyl or aralkyl polyoxyalkylene phosphate ester to the interior of the well. The phosphate ester maintains the acid and mutual solvent in a micellar emulsion state. The mixture is retained in the well to allow the acid to solubilize the mineral deposits and then the mixture and solubilized mineral deposits are removed from the well interior.

REFERENCES:
patent: 2356254 (1944-08-01), Lehmann et al.
patent: 2674619 (1954-04-01), Lundsted
patent: 3004056 (1961-10-01), Nunn et al.
patent: 3402770 (1968-09-01), Messenger
patent: 3794523 (1974-02-01), Thompson
patent: 4393935 (1983-07-01), Walton
patent: 4601836 (1986-07-01), Jones
patent: 4676916 (1987-06-01), Crema
Morrison, R. T. and Boyd, R. N. Organic Chemistry 3rd Ed. Boston, Allyn & Bacon Inc., 1973, p. 495.

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