Recovery system

E - Fixed Constructions – 21 – B

Patent

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E21B 21/06 (2006.01)

Patent

CA 2646998

A process for the recovery of drilling fluid additives, including industrial carbon, calcium carbonate, natural and synthetic fibers, and other materials from a mixture. The mixture may include drilling fluids, drilled solids, and drilling fluid additives from a mud system. The process may include: separating at least a portion of the drilled solids from the mixture to form a first effluent and a drilled solids fraction; separating at least a portion of the drilling fluid additives from the first effluent to form a second effluent and a recovered additives fraction; and recycling at least a portion of the recovered additives fraction to the mud system. The drilling fluid additives may have a specific gravity greater than 1.4, and may include particles having an average size greater than 2 microns.

L'invention concerne un procédé destiné à récupérer des additifs de fluide de forage, notamment du carbone industriel, du carbonate de calcium, des fibres naturelles et synthétiques, et d'autres matériaux d'un mélange. Le mélange peut contenir des fluides de forage, des solides forés, et des additifs de fluide de forage d'un système de boue. Le procédé consiste: à séparer au moins une partie des solides forés du mélange afin de former un premier effluent et une fraction de solides forés; à séparer au moins une partie des additifs de fluide de forage du premier effluent afin de former un second effluent et une fraction d'additifs récupérés; et à recycler au moins une partie de la fraction d'additifs récupérés dans le système de boue. Les additifs de fluide de forage peuvent avoir une gravité spécifique supérieure à 1,4, et contenir des particules dont la taille moyenne est supérieure à 2 microns.

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