The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 07, 2026
Filed:
Sep. 26, 2024
China University of Petroleum-beijing, Beijing, CN;
Kaoping Song, Beijing, CN;
Bingyu Ji, Beijing, CN;
Hongtao Fu, Beijing, CN;
Zhaojie Song, Beijing, CN;
CHINA UNIVERSITY OF PETROLEUM-BEIJING, Beijing, CN;
Abstract
An oil displacement method for an ultra-high water-cut reservoir, including the following steps: injecting water into the reservoir to carry out a water flooding until water cut of the reservoir is greater than 90%; injecting a polymer solution and a supercritical carbon dioxide oil displacement agent, respectively; injecting water to carry out water flooding after injection of the polymer solution or the supercritical carbon dioxide oil displacement agent is completed; where injection amounts of both the polymer solution and the supercritical carbon dioxide oil displacement agent are not less than 0.1 PV, and a total injection amount of the polymer solution and the supercritical carbon dioxide oil displacement agent is 0.3-1.2 PV; and a viscosity ratio of the polymer solution to a crude oil in the reservoir is 1:(0.8-10), and a viscosity ratio of the supercritical carbon dioxide oil displacement agent to the crude oil in the reservoir is 1:(10-800).
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile