Two stage downhole drilling fluid filter

Details Two stage downhole drilling fluid filter Two stage downhole drilling fluid filter

E - Fixed Constructions

21

B

E21B 7/04 (2006.01) E21B 21/00 (2006.01)

Patent

CA 2438826

A two stage filter for drilling fluid using downhole tools filters solid materials from the drilling fluid and has a first, outer filter section and a second, inner filter section. A portion of the drilling fluid flowing through the first section is received by the second section, and passed on to the fluid using device of the tool. A flow area of the first filter section is greater than a flow area of the second filter section.

Un filtre à deux étages pour fluide de forage utilisant des matériaux solides de filtres pour outils de fond de fluide de forage et comprend une première section filtrante extérieure et une deuxième section filtrante intérieure. Une partie du fluide de forage s'écoulant dans la première section est reçue par la deuxième section et passe sur le fluide au moyen du dispositif sur l'outil. Une aire de débit de la première section filtrante est plus large que l'aire de débit de la deuxième section filtrante.

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