CCUS (carbon capture utilization and storage) system for exploiting thickened oil reservoirs based on optimal flue gas CO2 enrichment ratio and working method thereof

US11208872B2 · kind B2 · utility

Assignee

• China University of Petroleum · CN

Inventors

• Chao Zhang · Qingdao, CN
• Zhaomin Li · Shandong, CN
• Jianlin Liu · Los Angeles, US
• Dongya Zhao · Qingdao, CN
• Teng Lu · Qingdao, CN
• Shouya WU · Qingdao, CN
• Longjiang Guo · Qingdao, CN

Key dates

• Filing date: Aug 3, 2018
• Grant date: Dec 28, 2021
• Expiry date: Dec 4, 2039

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P90/70
• WIPO field: Civil engineering
• WIPO sector: Other fields

Abstract

A CCUS system for exploiting a thickened oil reservoir based on an optimal flue gas CO2 enrichment ratio. The CCUS system comprises a flue gas CO2 enrichment unit, a flue gas injection unit, a thickened oil thermal production well group unit and a produced gas recovery unit; the fuel gas CO2 enrichment unit comprises an air separating enrichment unit and a boiler injection gas premixed tank; the air separating enrichment unit comprises an air separating primary device used for separating air into oxygen and nitrogen preliminarily, and an air separating secondary device used for further enriching a part of the oxygen which is subjected to the preliminary separation; and the boiler injection gas premixed tank is used for mixing the preliminarily separated nitrogen, the preliminarily separated part of the oxygen and/or the further enriched oxygen.