REAMER ROLLER CONE BIT WITH STEPPED REAMER CUTTER PROFILE

• Main Author: BUSKE ROBERT J
• Format: Patent
• Language: English
• Published: 22.04.2010
• Subjects: EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS

A bottom hole assembly including a pilot bit for initially forming an unconfined inner sidewall of a wellbore and a reamer tool above the pilot bit and comprising a first cutter ring to expand the unconfined inner sidewall, and a second cutter ring located above and outwardly of the first cutter rin...