roller cone bit


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roller cone bit

[′rōl·ər ¦kōn ‚bit]
(engineering)
A drilling bit containing two to four cutters (cones) mounted on very rugged bearings. Also known as bit cone; rock bit.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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The following information was obtained to select an appropriate roller cone bit according to the IADC Table:
Mills Machine makes two types of HRR bits a Free Bore and designs feature steel tooth or tungsten carbide, button roller cone bit segments with sealed bearings.
The 1,100-foot pilot bore was jetted with an 8 5/8-inch diameter roller cone bit and back-reamed with a 30-inch cutter to enlarge the hole.
New downhole tool products include the unique patented single roller cone bit, modular backreamers, a quick-connection system, and beacon housing device (patent pending) which protects downhole beacons from overheating.
Roller cone bits are used for drilling of conventional wells and therefore accounts for maximum share of the global drill bits market.
Ditch Witch roller cone bits were used to drill pilot holes.