Cutting element assemblies comprising rotatable cutting elements

US10450806B2 · kind B2 · utility

Assignee

• Baker Hughes, a GE company, LLC · US

Inventors

• John Abhishek Raj Bomidi · Spring, US
• Alexander Boehm · Dresden, DE
• Kegan L. Lovelace · Houston, US
• William A. Moss, Jr. · Conroe, US
• Jon David Schroder · Diemelstraße, US

Key dates

• Filing date: Jul 28, 2017
• Grant date: Oct 22, 2019
• Expiry date: Dec 21, 2037

Classification

• Technology area (CPC E): Fixed Constructions
• CPC primary: E21B10/633
• WIPO field: Civil engineering
• WIPO sector: Other fields

Abstract

A cutting element assembly includes a sleeve, a rotatable cutting element disposed within the sleeve, and a retention element. The sleeve and rotatable cutting element each have frustoconical surfaces. In some embodiments, a rotatable cutting element defines a first generally cylindrical surface, a second generally cylindrical surface, and an axial bearing surface opposite the end cutting surface and intersecting each of the first generally cylindrical surface and the second generally cylindrical surface. A bearing element may be disposed between an upper surface of a sleeve and a bearing surface of the rotatable cutting element. Earth-boring tools having rotating cutting elements are also disclosed.