Baker Hughes Corporation

US Synthetic Corporation

Terry J Kolterman

Chih C Lin

Danny Eugene Scott

Craig Hodges Cooley

Eric Charles Sullivan

Timothy Nathan Sexton

Gordon A Tibbitts

Steven R Radford

James Leslie Overstreet

Anton F Zahradnik

Don Quy Nguyen

James Andy Oxford

Aaron J Dick

Dan E Scott

Scott Shiqiang Shu

A rock drilling bit having PDC radial bearings has journal and cone bearing surfaces with increased contact area to increase load support. The radius of curvature of the bearing pin journal and cone bearing surfaces are matched or conformed on the bearing pressure side. The conformal journal surfaces may be formed on the main journal bearing, the pilot pin radial bearing, or both surfaces. In addition, diamond inlays may be located on the bearing surfaces of the cone, the bearing pin, or both components.

Conformal bearing for rock drill bit

A rotary-type drill bit for drilling subterranean formations having areas or components having surfaces exhibiting a relatively low adhesion, preferably nonwater-wettable, surface over at least a portion thereof.

Surface modifications for rotary drill bits

Growing community of inventors

The Woodlands, TX, United States of America

Terry J Kolterman