Multi-zone Intelligent and Interventionless Single Trip Completion

Abstract

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.

We claim: 
     
         1 . An interventionless completion method for one trip fracking and production from at least one interval, comprising:
 running in a bottom hole assembly that comprises at least one set of the following components:   an annular seal;   an isolation valve for selectively closing an internal passage through the assembly;   at least one frack port and associated closure for selective communication with said passage;   a screen with an associated screen valve to selectively allow communication with said passage;   performing, at least one time, the following completion steps without passage intervention with tools and in a single trip:   closing off an annular space with said annular seal;   closing off said passage with said isolation valve;   opening said frack port;   fracking through said now open frack port;   closing said frack port;   opening said screen valve; and   producing through said screen.   
     
     
         2 . The method of  claim 1 , comprising:
 running in multiple sets of said components;   locating said sets adjacent a plurality of intervals;   performing said completion steps at each said interval.   
     
     
         3 . The method of  claim 2 , comprising:
 performing said completion steps in a sequence that begins furthest from a surface location and moves toward said surface location.   
     
     
         4 . The method of  claim 1 , comprising:
 isolating said closure from passage pressures to a predetermined level.   
     
     
         5 . The method of  claim 4 , comprising:
 using a breakable member for said isolating.   
     
     
         6 . The method of  claim 5 , comprising:
 operating said closure with pressure after breaking said breakable member.   
     
     
         7 . The method of  claim 6 , comprising:
 using pressure cycles with a j-slot mechanism for opening and closing said closure.   
     
     
         8 . The method of  claim 6 , comprising:
 opening and closing said closure with pressure cycles applied to a spring loaded j-slot mechanism;   disabling said j-slot mechanism from reopening said closure after closing said closure.   
     
     
         9 . The method of  claim 8 , comprising:
 opening said screen valve after closing said closure.   
     
     
         10 . The method of  claim 3 , comprising:
 isolating said closures from passage pressures to different predetermined levels.   
     
     
         11 . The method of  claim 10 , comprising:
 using breakable members for said isolating.   
     
     
         12 . The method of  claim 11 , comprising:
 operating said closures with pressure after breaking a respective said breakable member.   
     
     
         13 . The method of  claim 12 , comprising:
 using pressure cycles with a j-slot mechanism for opening and closing each said closure.   
     
     
         14 . The method of  claim 12 , comprising:
 opening and closing said closures with pressure cycles applied to a spring loaded j-slot mechanism;   disabling said j-slot mechanism from reopening each said closure after closing said closure.   
     
     
         15 . The method of  claim 14 , comprising:
 opening at least one said screen valve after closing said closure associated with said screen.   
     
     
         16 . The method of  claim 10 , comprising:
 using breakable members set to break at different pressures for said isolating.   
     
     
         17 . The method of  claim 16 , comprising:
 using breakable members with progressively higher pressure settings in a direction toward a surface location.