23 WELL-DRILLING, SERVICING AND PRODUCTION EQUIPMENT AND PARTS THEREOF, COMPRISING DERRICK RIGS, CROWN BLOCKS, TRAVELING AND SPEED BLOCKS, CORING REELS, DRAW WORKS, [ DRILL COLLARS,] KELLY DRIVES, POWER RIGS, ROTARY TABLES, TOOL SWIVELS, DRILLING MACHINES, [ SPUDDERS,] HOISTS, WINCHES, AND PULLEYS