Patent ID: 8453734

Claim:
A wellbore completion apparatus, comprising; a conduit configured to extend between first and second wellbore intervals and through an isolation valve assembly separating the first and second intervals; a sliding sleeve configured to slide between an open position and a closed position wherein the sliding sleeve in the open position is configured to allow a flow of gravel slurry through the conduit between the first and second intervals, and the sliding sleeve in the closed position is configured to block the flow of gravel slurry through the conduit to isolate the first and second intervals from each other; an interval sleeve shiftably disposed in an inner bore of the isolation valve assembly and coupled to the sliding sleeve such that movement of the internal sleeve moves the sliding sleeve, offset first and second notches defined in the inner bore, wherein the internal sleeve further comprises: a latch profile; a collet region biased toward the inner bore and configured to resiliently deform; and a detent disposed on the collet region, the collet region configured to bias the detent into the first notch when the sliding sleeve is in the open position and to bias the detent into the second notch when the sliding sleeve is in the closed position; and a production tubing that is substantially parallel too the sliding sleeve, the production tubing configured to receive and to channel a wellbore production fluid from a subterranean formation and out of the wellbore; and a valve shifting tool disposed in the production tubing and configured to slide therein such that the valve shifting tool engages the internal sleeve and moves the sliding sleeve between the open and closed positions, wherein a tool comprises an engagement profile configured to releasably engage the latch profile such that the internal sleeve moves with the valve shifting tool.