C - Chemistry – Metallurgy – 09 – K
Patent
C - Chemistry, Metallurgy
09
K
C09K 8/38 (2006.01)
Patent
CA 2257345
The invention concerns a method for underground mining comprising the following steps: circulating in a well a foaming composition containing surfactants with cloud point higher than the temperature of the foam formation underground, heating the composition returning from the bottom to a temperature higher than the cloud point. The invention also concerns a system and a foaming composition based on water for implementing the method. The invention is useful for drilling and oil well completion operations requiring the use of a fluid with low density.
La présente invention concerne un procédé d'exploitation du sous-sol comportant les étapes de: circulation dans un puits d'une composition moussante comportant des tensioactifs à température de point de trouble supérieure à la température de la formation souterraine, de chauffage de la composition de retour du fond à une température supérieure à la température de point de trouble. L'invention concerne également un système et une composition moussante à base d'eau pour la mise en oeuvre du procédé. Application aux opérations de forage et aux opérations de complétion des puits pétroliers nécessitant l'usage d'un fluide de puits de faible masse volumique.
Argillier Jean-Francois
Audibert-Hayet Annie
Zeilinger Sabine
Institut Francais Du Petrole
Robic
LandOfFree
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