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DEEPTREK PHASE 1 AND 2 – IMPROVING DEEP DRILLING PERFORMANCE An Industry/DOE Program to Develop and Benchmark Advanced Diamond Product Drill Bits and HP/HT Drilling Fluids to Significantly Improve Rates of Penetration Reporting Period Start Date – September 2002 Reporting Period End Date – June 2007 Report Date – January 2008 DOE Award Number – DE-FC26-02NT41657 TerraTek, A Schlumberger company 1935 Fremont Dr. Salt Lake City, UT 84103