Apparatus and method for providing wellbore isolation

摘要

An actuatable wellbore isolation assembly comprising a housing generally defining an axial flowbore and comprising a mandrel portion, a first end portion, and a second end portion, a radially expandable isolating member positioned circumferentially about a portion of the housing, a sliding sleeve circumferentially positioned about a portion of the mandrel of the cylindrical housing, the sliding sleeve being movable from, a first position in which the sliding sleeve retains the expandable isolating member in a narrower non-expanded conformation to a second position in which the sliding sleeve does not retain the expandable isolating member in the narrower non-expanded conformation, and an actuator assemblage configured to selectively allow movement of the sliding sleeve from the first position to the second position.

主权项

1. An actuatable wellbore isolation assembly comprising:
a housing generally defining an axial flowbore and comprising a mandrel portion, a first end portion, and a second end portion; a radially expandable isolating member positioned circumferentially about a portion of the housing and having an outward chamfer; a sliding sleeve circumferentially positioned about a portion of the mandrel of the cylindrical housing and having an inward chamfer, the sliding sleeve being movable from;
a first position in which the inward chamfer engages the outward chamfer such that the sliding sleeve retains the expandable isolating member in a narrower non-expanded conformation toa second position in which the inward chamfer does not engage the outward chamfer such that the sliding sleeve does not retain the expandable isolating member in the narrower non-expanded conformation; and an actuator assemblage configured to selectively allow movement of the sliding sleeve from the first position to the second position wherein the actuator assemblage comprises a fluid chamber and a fluid aperture, wherein the fluid aperture provides a route of fluid communication between the axial flowbore and the fluid chamber.