©2009 Enventure Global Technology • Enventure and SET are trademarks of Enventure Global Technology • All Rights Reserved • 9/07 Mitigating Depleted Zones Deepwater, Gulf of Mexico Operator Nexen Petroleum USA, Inc. Challenge Prevent extreme fluid losses without sacrificing hole size while drilling through a high-pressure zone in a deepwater re-entry well. The operator had set 9-5/8 in. casing at ~15,0000 ft and needed to drill below ~23,000 ft. Objective Install a Solid Expandable Tubular (SET®) system to isolate the trouble zones. Retain hole size across all the depleted sands in a narrow pore pressure/fracture gradient environment. Results The operator installed a 7-5/8 x 9-5/8 in. openhole SET system over 6,865 ft in length—the longest SET system exp

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