Blended drilling fluid thinner

Details Blended drilling fluid thinner Blended drilling fluid thinner

C - Chemistry, Metallurgy

09

K

C09K 8/24 (2006.01) C09K 8/12 (2006.01) C09K 7/02 (1990.01)

Patent

CA 2104559

A blended additive composition, which is useful for thinning aqueous drilling fluids, is disclosed. The composition includes a first component selected from the group including: a modified tannin, a modified lignite and sodium lignosulfonate; a second component being a polymer prepared from acrylic acid; and a third component being a metal compound selected from the group of metals including iron, tin, chromium, manganese, titanium, aluminum and zinc.

Composition d'addition mixte, utile pour diluer des fluides de forage aqueux. La composition renferme un premier constituant choisi parmi un tanin modifié, une lignite modifiée et un lignosulfonate de sodium; un second constituant, à savoir un polymère préparé à partir de l'acide acrylique; un troisième enfin, soit un composé métallique choisi dans le groupe comprenant le fer, l'étain, le chrome, le manganèse, le titane, l'aluminium et le zinc.

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