Method and plant or increasing oil recovery by gas injection

US7168488B2 · kind B2 · utility

Assignee

• STATOIL ASA · NO

Inventors

• Ola Olsvik · Trondheim, NO
• Erling Rytter · Trondheim, NO
• Jostein Sogge · Sogndal, NO
• Rune Kvale · Stavanger, NO
• Sjur Haugen · Sandvika, NO
• Jan Grøntvedt · Stavanger, NO

Key dates

• Filing date: Aug 30, 2002
• Grant date: Jan 30, 2007
• Expiry date: Feb 17, 2023

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C01B2203/0283
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A method and a plant for simultaneous production of a gas for injection into an oil field and production of methanol, dimethyl ether and/or other oxygenated hydrocarbons or production of higher hydrocarbons from natural gas is disclosed. An air separation unit (ATR) for production of pure nitrogen for injection and pure oxygen for production of synthesis gas (“syngas”) by authermal reformation of a natural gas is an essential part of the method and plant.