Treatment fluids comprising diutan and associated methods

C - Chemistry – Metallurgy – 09 – K

Patent

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Details

C09K 8/68 (2006.01) C09K 8/72 (2006.01) E21B 43/04 (2006.01) F17D 1/17 (2006.01)

Patent

CA 2677462

Treatment fluids are provided that include a treatment fluid comprising a base fluid and a gelling agent that comprises clarified diutan. In some embodiments, the treatment fluid is a subterranean treatment fluid. In some embodiments, the treatment fluid is a subterranean treatment fluid comprising a base fluid, a gelling agent that comprises clarified diutan, and at least a plurality of particulates. Methods are provided that include a method comprising providing a acidic treatment fluid that comprises a base fluid, an acid composition, and a gelling agent that comprises clarified diutan; and introducing the acidic treatment fluid into at least a portion of a subterranean formation. In some embodiments, the acidic treatment fluid may be allowed to interact with a component of the subterranean formation so that the component is at least partially dissolved. In some embodiments, the acidic treatment fluid may be introduced into a pipeline.

La présente invention concerne des fluides de traitement et notamment un fluide de traitement comprenant un fluide de base et un gélifiant qui comprend du diutane clarifié. Dans certains modes de réalisation, le fluide de traitement est un fluide de traitement souterrain. Dans certains modes de réalisation, le fluide de traitement est un fluide de traitement souterrain comprenant un fluide de base et un gélifiant qui comprend du diutane clarifié, et au moins une pluralité de corps particulaires. L'invention concerne également des procédés dont l'un consiste à prendre un fluide de traitement acide comprenant un fluide de base, une composition acide, et un gélifiant comprenant du diutane clarifié, puis à introduire ce fluide de traitement acide dans au moins une partie d'une formation souterraine. Dans certains modes de traitement, le fluide de traitement acide peut être mis en réaction avec un composant de la formation souterraine, de façon que ce composant soit au moins en partie dissout. Dans certains modes de réalisation, le fluide de traitement peut être introduit dans un pipeline.

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