Polycrystalline diamond cutter with improved geometry for cooling and cutting evacuation and efficiency and durability

US10907416B2 · kind B2 · utility

Assignees

• CNPC USA Corporation · US
• China National Petroleum Corporation · CN
• Beijing Huamei, Inc. · CN

Inventors

• Chris Cheng · Houston, US
• Hongtao Liu · San Diego, US
• Javier Davila · Houston, US
• Xu Wang · Beijing, CN
• Yuxin Wang · Tangxia, CN
• Zhenzhou Yang · Beijing, CN
• Xiongwen Yang · Beijing, CN

Key dates

• Filing date: Jul 13, 2020
• Grant date: Feb 2, 2021
• Expiry date: Jul 13, 2040

Classification

• Technology area (CPC E): Fixed Constructions
• CPC primary: E21B10/42
• WIPO field: Civil engineering
• WIPO sector: Other fields

Abstract

The present disclosure provides non-planar cutting tooth and a diamond drill bit. The non-planar cutting tooth comprises a base, a table connected to a top of the base. a concave shaped surface on the center portion of a top surface of the table; three cutting ridges with each extending from a vertex of the concave shaped surface to an outer edge of the top surface; three cutting bevels with each locating between two cutting ridges of the three cutting ridges; each of the three cutting ridges has a fillet.