Smith International, Inc.

Allen D White

Scott D McDonough

Amardeep Singh

Mohammed Boudrare

Joshua Gatell

Parveen K Chandila

Brandon M Moss

Bryce A Baker

Luca Tedeschi

Gary Portwood

Giampaolo Ferrari

John Clunan

Josh Gatell

Scott D Mcdonough

A rolling cone drill bit for drilling in earthen formations having a plurality of rolling cone cutters. Each cone cutter includes a plurality of gage cutting elements, a first plurality of bottomhole cutting elements, and a second plurality of bottomhole cutter elements. Each of the first plurality of bottomhole cutting elements is staggered relative to the gage cutting elements on each cone cutter. Each of the second plurality of bottomhole cutting elements is staggered relative to the first plurality of bottomhole cutting elements on at least one cone cutter.

Rolling cone drill bit having high density cutting elements

A roller cone drill bit for drilling earth formation includes rows arranged on each of the cones such that, when viewed in routed profile, cutting element profiles partially overlap other cutting element profiles. The roller cone drill bit having at least a first three interior rows adjacent a gage row, each have a cutting element count selected from the group of 16, 18, 21 and 26 cutting elements.

Drill bits having optimized cutting element counts for reduced tracking and/or increased drilling performance

A drill bit for drilling through earthen formations and forming a borehole. In an embodiment, the bit comprises a bit body having a bit axis. In addition, the bit comprises a plurality of cone cutters, each of the cone cutters being mounted on the bit body and adapted for rotation about a different cone axis. Further, at least one cone cutter on the bit comprises an array of cutter elements mounted in a band. Still further, the cutter elements in the array are mounted in a plurality of differing radial positions relative to the bit axis.

Rolling cone drill bit having cutter elements positioned in a plurality of differing radial positions

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Houston, TX, United States of America

Allen D White