Well treatment process

US7473672B2 · kind B2 · utility

Assignee

• StatoilHydro ASA · NO

Inventors

• Hans Kristian Kotlar · Stavanger, NO
• Olav Martin Selle · Stavanger, NO
• Oddvar Arnfinn Aune · Stavanger, NO
• Lars Kilaas · Trondheim, NO
• Anne Dalager Dyrli · Stavanger, NO

Key dates

• Filing date: Nov 19, 2001
• Grant date: Jan 6, 2009
• Expiry date: Aug 22, 2023

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S507/939
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The invention provides a method for the treatment of a hydrocarbon well which method comprises administering, down said well, polymeric particles having covalently bound to a polymeric component thereof a well treatment chemical or a precursor thereof, wherein the particles contain covalent bonds scissile in an aqueous environment to release or expose said chemical or precursor.