Reverse circulating control valve

Details Reverse circulating control valve Reverse circulating control valve

E - Fixed Constructions

21

B

E21B 34/08 (2006.01) E21B 34/14 (2006.01)

Patent

CA 2266809

A circulation control valve includes a top sub having a bore, a body connected to the top sub and having a first fluid passageway and a second fluid passageway parallel to the first fluid passageway, the bore communicating with both the first fluid passageway and second fluid passageway, a one-way valve in the second fluid passageway, and a first activatable block for the first fluid passageway. Upon upon activation of the block, fluid in the first fluid passageway is blocked and only flows through the second fluid passageway.

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