Straight through cement mixer

B - Operations – Transporting – 28 – C

Patent

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Details

B28C 5/06 (2006.01)

Patent

CA 2651525

A cement mixing method for mixing cement used in cementing oil wells casing and the mixer used in that method. The mixer employs a straight bulk cement inlet, five annular recirculation jets and five annular water jet orifices located downstream of the recirculation jets so that all of the jets discharge at an angle towards the mixing chamber and the discharge from the water jet orifices intersects with the flow from the recirculation jets. This five jet, intersecting flow design allows for more thorough wetting of the cement powder with a smaller, lighter, less expensive and more durable mixer that is less inclined to foul and easier to clean.

Méthode de mélange du béton utilisé dans la cimentation des tubages de puits de pétrole et mélangeur utilisé avec ladite méthode. Le mélangeur fait appel à un orifice rectiligne d'entrée de ciment en vrac, à cinq diffuseurs de recirculation annulaires et cinq buses de jet d'eau annulaires placé après les diffuseurs de recirculation, de telle sorte que tous les diffuseurs déversent à un angle vers la chambre de mélange et le liquide déversé des buses d'eau s'entrecroise avec le débit des diffuseurs de recirculation. Cette forme de débit entrecroisé à cinq buses permet un mouillage plus complet de la poudre de ciment au moyen d'un mélangeur plus petit, plus léger, moins coûteux et plus durable qui est moins sujet à l'encrassement et dont le nettoyage est facilité.

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