Fluid comprising cellulose nanofibrils and its use for oil...

Details Fluid comprising cellulose nanofibrils and its use for oil... Fluid comprising cellulose nanofibrils and its use for oil...

C - Chemistry, Metallurgy

09

K

C09K 8/10 (2006.01) A23L 1/0534 (2006.01) A23L 1/054 (2006.01) C04B 18/24 (2006.01) C04B 40/00 (2006.01) C08L 1/00 (2006.01) C09K 8/20 (2006.01) C11D 3/22 (2006.01)

Patent

CA 2261089

The invention concerns a drilling fluid comprising cellulose nanofibrils containing at least 80 % cells with primary walls loaded with carboxylic acids, acid polysaccharides, separately or mixed. This additive, by itself, gives fluid rheological properties to the drilling fluid and is stable at temperatures up to 180 ·C.

La présente invention a pour objet un fluide de forage comprenant des nanofibrilles de cellulose comprenant au moins 80 % de cellules à parois primaires et chargées en acides carboxyliques, polysaccharides acides, seuls ou en mélange. Cet additif confère, seul, des propriétés rhéofluidifiantes au fluide de forage et est stable jusqu'à des températures de l'ordre de 180 ~C.

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