IWS solves complex problems: The ability to manage each producing zone in a multizone completion pays big dividends. Intelligent well systems (IWS) are needed to thoroughly analyze production dynamics, then act to optimize them

摘要

Not too many years ago, operators with multiple producing horizons had about three completion choices, none of them good. They could complete each zone in sequence, starting from the bottom and working toward the surface in a series of plug-back workovers. They could complete two or more zones below the packer and commingle the production through a single tubing string. Or, they could attempt multiple completions, each produced through its own tubing string, and isolated by increasingly elaborate packers. One such well actually had a quintuple-string completion. Getting all that hardware into the well without incident required a PhD. in plumbing and an unusual amount of luck Each option had several disadvantages.