Downhole Motor with Diamond-Like Carbon Coating on Stator and/or RotorAANM Scott; Dan E.AACI MontgomeryAAST TXAACO USAAGP Scott; Dan E. Montgomery TX USAANM Lin; ChihAACI HuntsvilleAAST TXAACO USAAGP Lin; Chih Huntsville TX US - diagram, schematic, and image 02
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