E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 43/22 (2006.01) C09K 8/58 (2006.01) C09K 8/62 (2006.01) C09K 8/70 (2006.01) C09K 8/72 (2006.01) C09K 8/82 (2006.01) C09K 8/94 (2006.01) E21B 43/00 (2006.01) E21B 43/267 (2006.01)
Patent
CA 2094088
An additive for addition to conventional well treatment fluids to enhance the ability of the fluids to be recovered from subterranean formations, to generate a foam in association with the fluids and/or to enhance the ability of the fluids to remove water and other connate fluids interlocked with gas in the formations. The additive includes about 25% to about 50% by volume of a microemulsion generating component which forms an acid and/or water external microemulsion when added to the treatment fluid, and about 50% to about 75% by volume of a foaming agent component. The foaming agent component includes at least one nonionic surface active agent having an HLB of from 12 to 22. The additive is particularly suitable for addition to foam fracturing fluids useful for stimulating tight or otherwise unconventional gas formations. Also provided are a gas well treatment composition employing the inventive additive and a method of treating a subterranean formation in which the inventive composition is employed.
Cette invention concerne un additif pour fluides classiques de traitement de puits visant à rehausser la récupérabilité desdits fluides injectés dans des formations souterraines, à générer une mousse en association avec lesdits fluides et/ou à augmenter la capacité desdits fluides d'extraire l'eau et les autres fluides de formation prisonniers des formations gazeuses. L'additif se compose d'un élément microémulsionnant formant entre environ 25 % et environ 50 % du volume total et d'un agent de moussage formant le reste du volume total. L'agent de moussage comporte au moins un agent tensio-actif non ionique ayant un rapport hydro-lipophile compris entre 12 et 22. L'objet de l'invention convient comme additif de mousses de fracturation utiles pour la stimulation des formations gazeuses avares ou présentant d'autres particularités. L'invention concerne également une composition de fluide de traitement de puits de gaz comportant l'additif objet de l'invention et une méthode de traitement d'une formation souterraine à l'aide de la composition précitée.
Blauch Matthew E.
Gardner Tommy R.
King Karen L.
Venditto James J.
Company Halliburton
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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