C - Chemistry – Metallurgy – 09 – K
Patent
C - Chemistry, Metallurgy
09
K
C09K 8/74 (2006.01)
Patent
CA 2518016
The present invention relates to viscoelastic fluids that contain nanotube structures that may be used advantageously as oilfield stimulation fluids in many different applications, most particularly as a fracturing fluid. Viscoelastic fluid compositions of the present invention include an aqueous medium, a viscoelastic surfactant, an organic or inorganic acids, or salt thereof, organic acid salts, inorganic salts, and a nanotube component. The invention is also called to a methods of treating a subterranean well bores in which the viscoelastic fluid is injected into the wellbore to perform operations such as fracturing, drilling, acid fracturing, gravel placement, removing scale, matrix acidizing, and removing mud cake. Further, a method of preparing a nanotube viscoelastic fluid comprising the steps of effectively mixing a carbon nanotube component into a viscoelastic fluid, and sonicating the mixture in order to incorporate the carbon nanotube component is claimed.
La présente invention concerne des fluides viscoélastiques contenant des structures nanotubes qui peuvent être utilisés avantageusement comme fluides de stimulation dans de nombreuses applications différentes dans le domaine des champs de pétrole, plus particulièrement comme fluide de fracturation. Les compositions de fluides viscoélastiques de la présente invention comprennent un milieu aqueux, un surfactant viscoélastique, un acide organique ou inorganique, ou un sel de celui-ci, des sels d'acides organiques, des sels inorganiques, et un composant de nanotubes. L'invention concerne également des procédés de traitement de puits souterrains dans lesquels le fluide viscoélastique est injecté afin d'effectuer des opérations telles que la fracturation, le forage, la fracturation à l'acide, la mise en place du gravier, l'élimination du tartre, l'acidification matricielle et l'élimination de gâteau de boue. En outre, on fait état d'un procédé de préparation d'un fluide viscoélastique de nanotubes qui consiste à mélanger efficacement un composant de nanotubes de carbone dans un fluide viscoélastique et à soumettre le mélange à une sonication pour incorporer le composant de nanotubes de carbone.
Davies Stephen
Dismuke Keith
Fu Diankui
Wattana Piyarat Ann
Schlumberger Canada Limited
Smart & Biggar
LandOfFree
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