Nanoparticles having magnetic core encapsulated by carbon shell and composites of the same

US10413966B2 · kind B2 · utility

Assignee

• Baker Hughes, a GE company, LLC · US

Inventors

• Sankaran Murugesan · Austin, US
• Oleksandr V. Kuznetsov · Manvel, US
• Valery N. Khabashesku · Houston, US

Key dates

• Filing date: Jun 20, 2016
• Grant date: Sep 17, 2019
• Expiry date: Jun 20, 2036

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B22F2999/00
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Nanoparticles for use in the treatment of a well have a magnetic core of iron, nickel or cobalt or an alloy thereof; a carbon shell encapsulating the magnetic core; at least one organic functional group on the surface of the carbon shell through covalent bonding; and a coating of amorphous carbon nitride encapsulating the functionalized carbon shell. The nanoparticles may be used to identify fluids produced from the reservoir, identify the zone within the reservoir from which recovered fluid is produced, in water flooding to determine water breakthrough in the production well and to identify those injection wells from which breakthrough water originates.