Sperry Drilling

Downhole Tools Case Studies

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	Title	Date
	Halliburton Increases Hole Quality and Saves Time in North Sea The operator wanted to avoid poor hole quality because of the problems with installing liners and the increased likelihood of casing failures.	Jan 2010
	PEMEX Uses Geo-Pilot® XL System and XR Reamer Tool to Drill in Challenging Plastic Shale Formation PEMEX needed to drill and enlarge a hole section from the vertical kickoff, building from zero to 35 degrees in a 12 ¼ x 17 ½ inch hole section, in a plastic shale formation.	Jan 2010
	Optimized Hole Enlargement while Drilling with the Geo-Pilot® System and XR™ Reamer Tool Saves Time for PEMEX PEMEX needed to drill and enlarge a hole section while performing sidetrack operations.	Jan 2010
	Sperry Drilling Delivers Record Horizontal Well in China Sperry Drilling services introduced modified drilling procedures (drilling of coal layers in the 12-1/4” section instead of the 8-1/2” horizontal section) using SperryDrill® mud motor assemblies with the AGS™ Adjustable Gauge Stabilizer tool for effective	Feb 2009