Blends of esters with isomerized olefins and other...

Details Blends of esters with isomerized olefins and other... Blends of esters with isomerized olefins and other...

C - Chemistry, Metallurgy

09

K

C09K 8/36 (2006.01) C09K 8/34 (2006.01)

Patent

CA 2456208

Environmentally acceptable or regulatory compliant oil-based drilling fluids and methods of using same in drilling a wellbore in a subterranean formation are disclosed. The fluids are able to meet environmental regulations while maintaining acceptable oil mud rheology and overall oil mud performance. The fluids are comprised of an invert emulsion. The base or continuous phase of the emulsion is comprised of esters blended with isomerized olefins, and/or other hydrocarbons, such as paraffins, mineral oils or glyceride triesters or combinations thereof. Alternatively, the emulsion has a base comprising isomerized olefins blended with other hydrocarbons such as linear alpha olefins, paraffins or naphthenes.

L'invention concerne des boues de forage huileuses réglementaires ou acceptables sur le plan environnemental ainsi que leurs procédés d'utilisation dans le forage de puits dans une formation souterraine. Ces boues peuvent satisfaire les exigences environnementales tout en maintenant des propriétés rhéologiques et un rendement global de boues à l'huile acceptables. Ces boues contiennent une émulsion inverse. La base ou la phase continue de l'émulsion contient des esters mélangés à des oléfines isomérisées, et/ou à d'autres hydrocarbures tels que : paraffines, huiles minérales ou triesters de glycéride, ou des combinaisons de ceux-ci. Dans une variante, l'émulsion contient une base renfermant des oléfines isomérisées mélangées à d'autres hydrocarbures tels que : alpha-oléfines linéaires, paraffines ou naphtènes.

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