APPARATUS AND METHODS FOR ACTIVATING A PLURALITY OF DOWNHOLE DEVICES

摘要

A mechanism for selectively activating a plurality of downhole pathways is disclosed. The method includes a casing segment which includes a plurality of casing ribs, a valve which includes a sleeve coupled for movement between an open and normally closed position, a rocker member mounted to the sleeve, a dart for pumping in hole including a dart profile matched to the rocker member profile such that the dart profile couples to the rocker member profile when in close proximity and, in turn, the sleeve moves from the closed position to the open position.

主权项

1. A mechanism for selectively activating a plurality of downhole pathways comprising:
a casing segment including a plurality of casing ribs; a valve including a sleeve coupled for movement between an open and normally closed position; a plurality of rocker members mounted pivotably to the sleeve, the plurality of rocker members configured to move back and forth as a dart is pumped in hole and passes by the sleeve; and wherein the dart comprises a dart profile which is matched to a rocker member profile, the dart profile coupling to the rocker member profile when in close proximity and, in turn, the sleeve moves downward by the distance between the casing ribs.