Oil recovery method using overbased waterflood additive containi

Details Oil recovery method using overbased waterflood additive containi Oil recovery method using overbased waterflood additive containi

1975-01-08

1976-04-27

Novosad, Stephen J.

Wells

Processes

Distinct, separate injection and producing wells

166274, 166273, 252 855D, E21B 4322

Patent

active

039528030

ABSTRACT:
An improved anionic overbased waterflood additive comprises a base component, a first sulfonate component derived from an alkylation reaction product employing a branched-chain alkene as the alkylating agent, and a second sulfonate component derived from an alkylation reaction product employing a partially chlorinated normal alkane as the alkylating agent, wherein the base component is present in the weight ratio range of 3/100 to 300/100, base component to total sulfonate, and wherein the weight ratio of the first sulfonate component to the second sulfonate component is in the range of 1/9 to 9/1. The overbased waterflood additive may be formed prior to injection into a petroliferous formation or may be formed in situ by first injecting the total sulfonate followed by the base component.

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patent: 3591498 (1971-07-01), Benbury et al.
patent: 3799263 (1974-03-01), Prillieux et al.
patent: 3804171 (1974-04-01), Krehbiel et al.

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