C - Chemistry – Metallurgy – 09 – K
Patent
C - Chemistry, Metallurgy
09
K
C09K 3/00 (2006.01) E21B 21/00 (2006.01) E21B 33/00 (2006.01) E21B 33/02 (2006.01) E21B 33/10 (2006.01) E21B 43/00 (2006.01) E21B 43/16 (2006.01) E21B 43/22 (2006.01) E21B 43/25 (2006.01) E21B 43/27 (2006.01)
Patent
CA 2573526
The present invention is directed to an under-neutralized alkylxylene sulfonic acid composition for enhanced oil recovery processes. The present invention is also directed to a method for enhancing the recovery of oil from a subterranean reservoir which method employs the under-neutralized alkylxylene sulfonic acid compositions of the present invention. The under-neutralized alkylxylene sulfonic acid compositions are employed in an aqueous media. The method optionally employs suitable co-surfactants, such as alcohols, alcohol ethers, polyalkylene glycols, poly(oxyalkylene)glycols and/or poly(oxyalkylene)glycol ethers.
L'invention concerne une composition d'acide sulfonique alkylxylène sous-neutralisée, destinée à des processus de récupération de pétrole améliorés. L'invention concerne également un procédé permettant d'améliorer la récupération de pétrole dans un réservoir souterrain. Ce procédé met en oeuvre les compositions d'acide sulfonique alkylxylène sous-neutralisées selon l'invention. Ces compositions sont utilisées dans un milieu aqueux. Ledit procédé met facultativement en oeuvre des co-tensiactifs adaptés, tels que des alcools, des éthers d'alcool, des polyalkylène glycols, des poly(oxyalkylène)glycols et/ou des éthers de poly(oxyalkylène)glycol.
Campbell Curt B.
Sinquin Gilles P.
Chevron Oronite Company Llc
Sim & Mcburney
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