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:
Jul. 18, 2023
Filed:
Aug. 31, 2022
Southwest Petroleum University, Chengdu, CN;
Daijun Du, Chengdu, CN;
Huancai Fan, Chengdu, CN;
Wanfen Pu, Chengdu, CN;
Rui Liu, Chengdu, CN;
Fayang Jin, Chengdu, CN;
Lin Sun, Chengdu, CN;
Binyang Zou, Chengdu, CN;
Bowen Chen, Chengdu, CN;
Southwest Petroleum University, Chengdu, CN;
Abstract
A tight oil reservoir COflooding multi-scale channeling control system and a preparation method, including nanoscale COresponsive worm-like micellar systems and micron-scale COresponsive dispersion gel, are provided. The nanoscale COresponsive worm-like micelle system is prepared by COreactive monomers and organic anti-ion monomers stirred in water. The micron-scale COresponsive dispersion gel is made of acrylamide, a responsive monomer, a silane coupling agent modified hydroxylated multi-walled carbon nanotubes as raw materials, cross-linked in water. The tight oil reservoir COmulti-scale channel control system, has strong flow control ability during COdisplacement, and high-strength carbon nanotubes are introduced into the micro-scale COresponsive dispersion gel, which effectively improves the strength and long-term stability of the dispersion gel, significantly enhances the sealing effect on cracks, and after displacement of the COof the system, the worm-like micelles revert to spherical micelles with good responsive reversibility.