Patent ID: 8127847
Filing Date: 2012-03-06
Classification: E21B

Abstract:
1. A completion assembly for a zone in a subterranean location accessible from a surface, comprising: a tubular housing defining a wall and a passage therein; at least one first valved port in said wall selectively movable between a closed and a open position wherein said port is substantially unobstructed, said first valved port providing selective access to the zone; at least one second valved port located further from the surface along said passage than said first valved port and providing selective access to said same zone selectively operable between a fully closed and a second condition where flow through said second valved port is screened, said second valved port comprising a second valved port sliding sleeve with the screen disposed in said sliding sleeve or mounted to said wall so that the completion assembly has no more than two coaxial layers comprising said housing and said sliding sleeve; said location of second valved port on said housing relative to said first valved port places said second valved port at a location along said passage out of the path of flow in said passage through said first valved port when said first valved port is in said open position.