A method called "scoping" for installing solid expandable tubular (SET) drilling liners across pressure-depleted zones has been developed and demonstrated. High overbalance pressures associated with pressure-depleted zones are known to interfere with conventional SET expansion. Scoping is a dynamic expansion method that keeps the expandable tubing in continuous motion thus reducing risk of stuck pipe and SET failures related to differential sticking. This paper describes how scoping is performed and how it worked in a test well.

Keywords:
liner, expansion, pump pressure, pressure-depleted zone, enventure global technology, casing design, liner shoe, bp america inc, expansion cone, spe 81095
Subjects:
Drilling Operations, Casing and Cementing, Casing design, Completion Installation and Operations
Copyright 2003, Society of Petroleum Engineers
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