C - Chemistry – Metallurgy – 09 – K
Patent
C - Chemistry, Metallurgy
09
K
C09K 8/03 (2006.01) C09K 8/035 (2006.01) E21B 21/00 (2006.01)
Patent
CA 2693431
Generally, the present invention provides drilling fluid additives for reducing or controlling lost circulation in a drilling operation. The additives comprises particles. The particles comprise one or more solids in association a wax or waxy substance. A drilling fluid comprising a drilling fluid additive of the invention is also provided, as well as a method and use of the drilling fluid additive in a drilling operation to reduce or control lost circulation. Methods for manufacturing the drilling fluid additives are also described.
La présente invention concerne de manière générale des additifs de fluide de forage destinés à réduire ou à contrôler les pertes de circulation dans une opération de forage. Les additifs contiennent des particules. Les particules contiennent un ou plusieurs solide(s) associé(s) avec une cire ou une substance cireuse. L'invention concerne également un fluide de forage contenant l'additif de fluide de forage, ainsi qu'un procédé d'utilisation de l'additif de fluide de forage dans une opération de forage afin de réduire ou de contrôler les pertes de circulation. L'invention concerne également des procédés destinés à fabriquer les additifs de fluide de forage.
Borden Ladner Gervais Llp
Canadian Energy Services L.p.
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