Cutting element assemblies comprising rotatable cutting elements, earth-boring tools including such cutting element assemblies, and related methods

US10458188B2 · kind B2 · utility

Assignee

• Baker Hughes, a GE company, LLC · US

Inventors

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

Key dates

• Filing date: Oct 26, 2017
• Grant date: Oct 29, 2019
• Expiry date: Mar 30, 2038

Classification

• Technology area (CPC E): Fixed Constructions
• CPC primary: E21B10/55
• WIPO field: Civil engineering
• WIPO sector: Other fields

Abstract

A cutting element assembly may include a support structure and a pin having a cylindrical exterior bearing surface. Retention elements may couple opposing ends of the pin to the support structure. The cutting element assembly also includes a rotatable cutting element including a table of polycrystalline hard material having an end cutting surface and a supporting substrate. The rotatable cutting element may have an interior sidewall defining a longitudinally extending through hole. The pin may be positioned within the through hole of the rotatable cutting element and may be supported on the opposing ends thereof by the support structure. Methods include drilling a subterranean formation including engaging a formation with one or more of the rotatable cutting elements.