公开(公告)号：US11208872B2

公开(公告)日：2021-12-28

申请号：US16331929

申请日：2018-08-03

Applicant: CHINA UNIVERSITY OF PETROLEUM

Inventor： Chao Zhang ,  Zhaomin Li ,  Jianlin Liu ,  Dongya Zhao ,  Teng Lu ,  Shouya Wu ,  Longjiang Guo

IPC: E21B43/16 ,  E21B43/40 ,  E21B41/00

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.