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Related Experiment Video

Updated: Jun 20, 2026

Interlinked Macroporous 3D Scaffolds from Microgel Rods
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Interlinked Macroporous 3D Scaffolds from Microgel Rods

Published on: June 16, 2022

Development and performance evaluation of macropore intelligent plugging hydrogels.

Fang Shi1,2, Weibin Jin3,4, Jingchun Wu3

  • 1Key Laboratory for EOR Technology (Ministry of Education), Northeast Petroleum University, Daqing, 163318, China. sfang0307@163.com.

Scientific Reports
|June 18, 2026
PubMed
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This summary is machine-generated.

A novel dual-network hydrogel (DN-Gel) effectively plugs water channels in deep reservoirs. This advanced material demonstrates excellent stability and significantly improves plugging efficiency compared to traditional agents.

Area of Science:

  • Materials Science
  • Chemical Engineering
  • Petroleum Engineering

Background:

  • Polymer hydrogels are crucial for controlling water channeling in reservoirs.
  • Water-dominant channels in deep reservoirs are often blocked by conventional hydrogels.

Purpose of the Study:

  • To develop an innovative dual-network hydrogel system (DN-Gel) for efficient reservoir plugging.
  • To enhance the stability and performance of hydrogels under harsh reservoir conditions.

Main Methods:

  • Synthesized a dual-network hydrogel combining a chemical network (ACL-HG) and a physical network (GQDs-Gel).
  • Utilized glycidyl methacrylate (GMA), PEGMA, DMA, graphene quantum dots (GQDs-GX), and ascorbic acid.
  • Characterized the hydrogel structure using FTIR and SEM; evaluated performance via viscosity tests, stability tests, and core simulations.
Keywords:
Dual-network structureHigh-permeability reservoirWater-swelling adhesive hydrogel

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Main Results:

  • The DN-Gel exhibited a dense dual-network structure with synergistic crosslinking via Michael addition and hydrogen bonding.
  • Demonstrated excellent stability with viscosity reduction below 20% over 56 days and over 80.6% mass retention under high temperature and salinity.
  • Achieved a high breakthrough pressure gradient (129.21 MPa/m) and permeability change rate (99.21%), outperforming traditional plugging agents.

Conclusions:

  • The developed DN-Gel offers a superior solution for green and efficient plugging in sandstone reservoirs.
  • This study provides a new material design strategy for advanced reservoir plugging applications.