Circulation valve and method for operating the same

Details Circulation valve and method for operating the same Circulation valve and method for operating the same

1985-11-12

1987-04-14

Novosad, Stephen J.

Wells

Submerged well

Testing

166386, 166321, 166331, 166374, E21B 3410

Patent

active

046570829

ABSTRACT:
Pressure operated circulation valve and method for using the same. A cylindrical housing has an open longitudinal passageway therethrough and a circulation port disposed through a wall thereof. A valve mandrel is slidably received in the housing and is moveable between a position in which fluid may be circulated only between the passageway and the exterior of the housing, a position in which fluid may be circulated only between the exterior of the housing and the passageway, and a position in which fluid may not be circulated in either direction. An annular piston is operatively connected to the valve mandrel and has a first side exposed to pressure exterior of the housing and a second side expose to pressure interior of the housing to permit movement of the valve mandrel to its various positions by application of pressure to the interior and exterior of the housing.

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Halliburton Services Drawing 615.4121.

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