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Temperature
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BEARINGS
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DRILL BITS
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DRILLING
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DRILLING EQUIPMENT
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EQUIPMENT
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GEOTHERMAL ENERGY
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WELLS
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1. [Image] Annual Report on the Project to Design and Experimentally Test an Improved Geothermal Drill Bit
Progress is reported in a research and development program to design, build, and test an improved geothermal drill bit. The major tasks of the Phase I effort are entitled: failure mechanisms of existing ...Citation -
The development and field testing of a 222 mm (8-3/4 inch) unsealed, insert type, medium hard formation, high-temperature bit are described. Increased performance was gained by substituting improved materials ...
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