Treatment of steam feedwater with CO.sub.2 to reduce oil well re

Details Treatment of steam feedwater with CO.sub.2 to reduce oil well re Treatment of steam feedwater with CO.sub.2 to reduce oil well re

1985-04-29

1988-01-19

Suchfield, George A.

Wells

Processes

With indicating, testing, measuring or locating

166272, 166303, E21B 4324, E21B 4700

Patent

active

047199725

ABSTRACT:
A method of inhibiting the dissolution of the gravel pack and/or the erosion of silicate-containing formations subjected to steam-enhanced oil recovery processes. The method includes the addition of CO.sub.2 into the residual liquid phase of the steam, prior to injection down the well bore, to reduce the pH to form about pH 5 to about pH 9.

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patent: 4475595 (1984-10-01), Watkins et al.
patent: 4516636 (1985-05-01), Doscher

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