HYBRID ROLLER-MILL BIT AND HYBRID ROLLER-DRAG BIT

• Main Authors: MAURSTAD, Cary Andrew, NEAL, Patricia Ann, GALLIFET, Thomas, HOWARD, Johnathan Walter, STROEVER, Matthew Charles
• Format: Patent
• Language: English
• Published: 11.12.2019
• 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 roller-mill bit for use in a wellbore includes: a body having a coupling formed at an upper end thereof and a plurality of lower legs; a plurality of roller disks, each roller disk secured to a bearing shaft of a respective leg for rotation relative thereto; a row of crushers mounted around each r...