HYBRID ROLLER-MILL BIT AND HYBRID ROLLER-DRAG BIT

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...

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Bibliographic Details
Main Authors MAURSTAD, Cary Andrew, NEAL, Patricia Ann, GALLIFET, Thomas, HOWARD, Johnathan Walter, STROEVER, Matthew Charles
Format Patent
LanguageEnglish
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
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Summary: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 roller disk; and a fixed mill mounted to the bearing shafts and comprising a pad for each roller disk. Each pad is dressed with a cermet material.
Bibliography:Application Number: SE20190030396