Case Study Redrill Avoided with ESealTM Liner and Patches Challenge The vertical section of a 9,433 MD gas well was damaged prior to the initiation of the completion program. The vertical section needed to be repaired in order to perform the fracturing treatment. However, the repair process would reduce the wellbore ID and impact the plan to differentially fracture five zones in the horizontal section. Added Value The operator saved their initial investment, saving costs associated with re-drilling the well. The well was completed on plan producing 1.2 million cubic feet of natural gas per day. ? Completion Date: December 2007 ? Location: Johnson Co., TX, USA ? Basin: Barnett ? Well Type: Horizontal ? B

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