MULTI-ZONE INTELLIGENT AND INTERVENTIONLESS SINGLE TRIP COMPLETION

摘要

A one trip interventionless method for fracking multiple intervals incorporates a remotely operated passage isolation valve for each interval. A screen backed by a base pipe is provided to route screened production through a shutoff valve before the production reaches the passage in the completion assembly. The shutoff valve is remotely operated as well. The fracking port is associated with a pressure responsive operator such as a j-slot mechanism with a spring return. The j-slot mechanism is behind a rupture disc so that it remains unaffected while other operations are going on in the wellbore. The rupture discs are set at different pressures for the intervals involved. Sequentially, each fracked zone is isolated and the zone above is opened with breaking the rupture disc and applying predetermined number of pressure cycles. The screen valves are remotely operated as needed after the fracking to initiate production from one or more intervals.