Michael Jellison

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Light Weight – Ultra-High Strength Drill Pipe for Extended Reach and Critical Deep Drilling <strong>Jellison</strong>, Foster, Elliott, Sanclemente, Muradov, Hehn S-N plot for fatigue testing program comparing UD-165 with V-150. 6
Light Weight – Ultra-High Strength Drill Pipe for Extended Reach and Critical Deep Drilling <strong>Jellison</strong>, Foster, Elliott, Sanclemente, Muradov, Hehn Field History • 30 joints of 5” 0.500” wall thickness UD-165 drill pipe deployed to Patterson UTI Rig #30 in South Texas and successfully run in two wells in combination with 5” 19.50# S-135 NC50 drill pipe. Wells in this area typically range in depth from 16,000 to 17,000 ft. • First use was not planned. Rig did not have sufficient pipe to reach TD and topped out the string with 12 joints of UD-165 pipe. (Additional 5” S-135 drill pipe readily available; decision made to run UD-165 early.) Drill pipe performed as expected with no unusual running or handling issues experienced. • Second case history was a re-entry well in same South Texas area. Well kicked off at 3,450 ft and a total of 13,274 ft was drilled to an MD of 16,724 ft with max inclination angle of 23 deg. Average RPM’s were 65 running with a mud motor and 12,000 to 15,000 lb WOB. Penetration rates averaged 30 – 35 ft/hr with rotary table and 15 – 20 ft/hr in sliding mode with mud motor drilling. Visual inspection revealed no unusual or unexpected conditions and pipe showed typical signs of normal use. • Since then 5-7/8” 0.500” wall thickness UD-165 pipe manufactured and awaiting field trials. • First lot of light weight 5-7/8” 0.300” wall thickness UD-165 drill pipe currently being processed for evaluation and field trials. In addition, there are plans to build two ultra-high capacity 6-5/8” UD-165 landing strings this year. 7
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Michael Jellison

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