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SPE.org 

Pictures shot in fractured wells show how a high-pressure slurry of water and sand carves up the perforations. This paper presents the evolution of a Bakken advanced completion design with the added enhancement of extreme limited entry (XLE) perforating. With this strategy, an operator has consistently stimulated more than 11 perforation clusters per stage. Good reservoir detective work costs money, but two studies show how it can help identify even more expensive problems.