What question did this study set out to answer?

The study aims to improve oil recovery in fractured reservoirs by employing a staged injection strategy with CO2-responsive materials.

March 17, 2026Energy & Fuels

Synergistic Conformance Control in Fractured Reservoirs Using CO 2 -Responsive Gel and Foam during CO 2 Flooding

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Authors

QGQi GaoUniversity of Alberta YLY. LiuHuaqiao University JTJapan Trivedi

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Implication

This work demonstrates enhanced oil recovery in fractured reservoirs using CO2-responsive gel and foam, indicating improved efficiency of CO2 flooding.

Key Points

The study aims to improve oil recovery in fractured reservoirs by employing a staged injection strategy with CO2-responsive materials.
Synthesized two types of CO2-responsive gels via free-radical polymerization.
Evaluated swelling ratios, rheological properties, and structural morphology of the gels.
Conducted core-scale enhanced oil recovery tests using artificial fractured cores.
The CR-DDN gel exhibited greater structural integrity and higher elastic modulus than CR-DAN.
Incremental recoveries of 14.5%–25.5% were achieved during gel injection, based on matrix permeability.
Using surfactant-alternating-gas cycles increased ultimate recovery to 76.91% compared to standard coinjection.

Cite This Study

Gao et al. (2026) studied this question.

synapsesocial.com/papers/69b8ef6ddeb47d591b8c5878 https://doi.org/10.1021/acs.energyfuels.6c00440

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Implication

This work demonstrates enhanced oil recovery in fractured reservoirs using CO2-responsive gel and foam, indicating improved efficiency of CO2 flooding.

Synergistic Conformance Control in Fractured Reservoirs Using CO 2 -Responsive Gel and Foam during CO 2 Flooding

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Implication

Key Points

Cite This Study

Synergistic Conformance Control in Fractured Reservoirs Using CO 2 -Responsive Gel and Foam during CO 2 Flooding

Discussion

Member takes

Implication

Key Points

Cite This Study

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