Downhole valve assembly

Details Downhole valve assembly Downhole valve assembly

E - Fixed Constructions

21

B

E21B 33/12 (2006.01) E21B 33/124 (2006.01)

Patent

CA 2613775

Downhole tools and methods for isolating a wellbore. A downhole tool can include a body having a bore or flowpath formed therethrough, and one or more sealing members disposed therein. The one or more sealing members can include an annular base and a curved surface having an upper face and a lower face, wherein one or more first radii define the upper face, and one or more second radii define the lower face, and wherein, at any point on the curved surface, the first radius is greater than the second radius. The sealing members can be disposed within the bore of the tool using one or more annular sealing devices disposed about the one or more sealing members.

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