Downhole tool

Details Downhole tool Downhole tool

E - Fixed Constructions

21

B

E21B 47/06 (2006.01) E21B 33/12 (2006.01) E21B 33/126 (2006.01)

Patent

CA 2484611

A pressure control device for mounting on a mandrel includes a flexible cup member, a rigid support member and an anti extrusion portion of greater hardness than the cup member located at an outer portion of the cup member. The cup member is bonded only to selected areas of the anti extrusion portion and the support member, thereby permitting relative movement between other areas of contact.

Dispositif de régulation de pression monté sur un mandrin et comportant une coupelle souple, un support rigide et une partie anti-extrusion pour une dureté plus grande que la coupelle, située à la partie extérieure de cette dernière. La coupelle est liée seulement à des endroits choisis de la partie anti-extrusion et du support, ce qui permet un mouvement relatif entre les autres surfaces de contact.

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