EARTH-BORING TOOLS HAVING CUTTING ELEMENTS WITH CUTTING FACES EXHIBITING MULTIPLE COEFFICIENTS OF FRICTION, AND RELATED METHODS
摘要
An earth-boring tool having at least one cutting element with a multi-friction cutting face provides for the steering of formation cuttings as the cuttings slide across the cutting face. The multi-friction cutting element includes a diamond table bonded to a substrate of superabrasive material. The diamond table has a cutting face formed thereon with a cutting edge extending along a periphery of the cutting face. The cutting face has a first area having an average surface finish roughness less than an average surface finish roughness of a second area of the cutting face, the two areas separated by a boundary having a proximal end proximate a tool crown and a distal end remote from the tool crown.
申请公布号
EP2844819(A4)
申请公布日期
2016.03.30
申请号
EP20130785153
申请日期
2013.05.01
申请人
BAKER HUGHES INCORPORATED
发明人
BILEN, JUAN, MIGUEL;DIGIOVANNI, ANTHONY, A.;LIN, CHIH, C.;PATEL, SURESH, G.;PESSIER, RUDOLF, CARL;SCOTT, DANNY, E.;DOSTER, MICHAEL, L.