Zone isolation assembly for isolating a fluid zone in a subsurface well

Abstract

A zone isolation assembly ( 22 ) for a subsurface well ( 12 ) that includes a riser pipe ( 30 ) having a fluid zone includes a movable docking receiver ( 48 ), a fluid inlet structure ( 31 ) and a sealer ( 56 ). The docking receiver ( 48 ) is adapted to be positioned within the riser pipe ( 30 ). The fluid inlet structure ( 31 ) is coupled to the docking receiver ( 48 ). The fluid inlet structure ( 31 ) allows a first fluid from the fluid zone into the fluid inlet structure ( 31 ). The sealer ( 56 ) is coupled to the docking receiver ( 48 ). The sealer ( 56 ) selectively forms a seal with the riser pipe ( 30 ) to divide the fluid zone into a first zone ( 26 ) and a second zone ( 28 ) when the sealer ( 56 ) is in a first position. In the first position, the first zone ( 26 ) is not in fluid communication with the second zone ( 28 ).

1 . A zone isolation assembly for a subsurface well including a riser pipe having a fluid zone, the zone isolation assembly comprising: 
 a movable docking receiver adapted to be positioned within the riser pipe;    a fluid inlet structure that is coupled to the docking receiver, the fluid inlet structure allowing a fluid from the fluid zone into the fluid inlet structure; and    a sealer that is coupled to the docking receiver, the sealer selectively moving to a first position wherein the sealer forms a seal with the riser pipe to divide the fluid zone into a first zone and a second zone that is not in fluid communication with the first zone.