C - Chemistry – Metallurgy – 09 – K
Patent
C - Chemistry, Metallurgy
09
K
C09K 8/514 (2006.01) C09K 8/035 (2006.01) C09K 8/575 (2006.01) C09K 8/68 (2006.01) C09K 8/80 (2006.01) E21B 43/04 (2006.01) E21B 43/25 (2006.01) E21B 43/26 (2006.01)
Patent
CA 2439364
Herein is disclosed a well completion or stimulation fluid, comprising (i) a carrier fluid; (ii) a viscoelastic surfactant; and (iii) a fluid loss control additive (FLA) comprising at least one polymer and at least one crosslinker. The fluid may further comprise proppant or gravel, if it is intended for use as a fracturing fluid or a gravel packing fluid, although such uses do not require that the fluid comprise proppant or gravel. Also disclosed herein are methods of fracturing a subterranean formation, comprising (i) providing a fracturing fluid discussed above and (ii) injecting the fracturing fluid into the formation at a pressure sufficiently high to fracture the formation. In addition, disclosed herein are methods of gravel packing a wellbore, comprising (i) providing a gravel packing fluid discussed above and (ii) injecting the gravel packing fluid into the wellbore.
L'invention porte sur un fluide de colmatage ou de stimulation de puits de pétrole comportant: (i) un support fluide; (ii) un tensio-actif viscoélastique; et (iii) un additif limitant les pertes de fluide (FLA) comprenant au moins un polymère et un agent réticulant. Le fluide peut en outre, et non obligatoirement, comporter un agent de soutènement ou du gravier s'il doit servir de fluide de fractionnement ou de fluide de colmatage au gravier. L'invention porte également sur des procédés de fractionnement de formations souterraines consistant à: (i) se procurer le fluide de fractionnement décrit ci-dessus; et (ii) à l'injecter dans la formation à une pression suffisante pour produire le fractionnement. L'invention porte en outre sur un procédé de colmatage au gravier d'un puits consistant à: (i) se procurer le fluide de colmatage au gravier décrit ci-dessus; et (ii) à l'injecter dans le puits.
Miller Matthew
Olsen Thomas
Samuel Mathew
Vinod Palathinkara
Schlumberger Canada Limited
Smart & Biggar
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