the aim, multiple producing zones

Information that may explain to non engineers / oilers
the outcome we are aiming for.
Good production from multiple zones at Atzam 5.
Not sure if this is the sleeve mechanism they will use.
Info from Schlumberger.

Single-zone and multizone well completions. In the single-zone completion(left), a packer, which forms a seal inside the production casing, hydraulically
isolates the tubing string from the region above the packer, called the“backside.” The backside contains completion fluid with corrosion inhibitors
to prevent casing corrosion. The multizone completion (
right) employs at least two packers that separate the producing zones. Fluids from all zones may be
allowed to commingle during production, or production from the upper zone may be shut off by closing a sliding sleeve until operators have determined the fluids may be commingled. Alternatively, operators may choose to allow the
lower zone to become depleted, then set a plug (not shown) above the lower zone and open the sliding sleeve to produce only from the upper zone.