Rotary drill bit including polycrystalline diamond cutting elements

US7866418B2 · kind B2 · utility

Assignee

• US Synthetic Corporation · US

Inventors

• Kenneth E. Bertagnolli · Riverton, US
• Jiang Qian · Shanghai, CN
• Jason K. Wiggins · Draper, US
• Michael A. Vail · Salt Lake City, US
• Debkumar Mukhopadhyay · Sandy, US

Key dates

• Filing date: Oct 3, 2008
• Grant date: Jan 11, 2011
• Expiry date: Feb 25, 2029

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/30
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

Embodiments of the invention relate to polycrystalline diamond (“PCD”) exhibiting enhanced diamond-to-diamond bonding. In an embodiment, PCD includes a plurality of diamond grains defining a plurality of interstitial regions. A metal-solvent catalyst occupies at least a portion of the plurality of interstitial regions. The plurality of diamond grains and the metal-solvent catalyst collectively exhibit a coercivity of about 115 Oersteads (“Oe”) or more and a specific magnetic saturation of about 15 Gauss·cm3/grams (“G·cm3/g”) or less. Other embodiments are directed to polycrystalline diamond compacts (“PDCs”) employing such PCD, methods of forming PCD and PDCs, and various applications for such PCD and PDCs in rotary drill bits, bearing apparatuses, and wire-drawing dies.