Method for recovering oil

US9518211B2 · kind B2 · utility

Assignees

• BASF SE
• Wintershall Holding GmbH · DE

Inventors

• Riichiro Kimura · Ludwigshafen, DE
• Stefan Maurer · Shanghai, CN
• Andrei-Nicolae Parvulescu · Ludwigshafen am Rhein, DE
• Lorenz Siggel · Heidelberg, DE
• Ulrich Müller · Neustadt, DE
• Thomas Frechen · Heidelberg, DE
• Bernd Hinrichsen · Stuttgart, DE

Key dates

• Filing date: Jan 15, 2014
• Grant date: Dec 13, 2016
• Expiry date: Jan 15, 2034

Classification

• Technology area (CPC E): Fixed Constructions
• CPC primary: E21B43/16
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The present invention relates to a process for recovering oil from a subterranean formation by injecting both solid particles and water into the formation. An oil-in-water emulsion that is stabilized by solid particles is formed in the pores of the formation. This emulsion is recovered from the subterranean formation.