What question did this study set out to answer?

To investigate the spatiotemporal evolution of pressure and permeability and clarify the microscopic mechanisms of fine-particle migration and blockage in the near-well zone during gas hydrate exploitation.

August 16, 2026Journal of Marine Science and EngineeringOpen Access

Pressure and Permeability Evolution near Hydrate Exploitation Well During Constant-Rate Water Flooding: An Experimental Study

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Authors

YLYuning Liu YJYunkai JiMinistry of Natural Resources QFQiang FuTongji University

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Implication

Experimental study demonstrates localized permeability damage at reservoir-pack boundaries during constant-rate water flooding, indicating critical mechanisms for optimizing gas hydrate well design.

Key Points

To investigate the spatiotemporal evolution of pressure and permeability and clarify the microscopic mechanisms of fine-particle migration and blockage in the near-well zone during gas hydrate exploitation.
Segmentally packed a long column with South China Sea clayey-silt sediments (reservoir simulation) and quartz sand (packed layer simulation).
Conducted long-term constant-velocity water displacement experiments coupled with continuous pressure distribution monitoring and post-test particle-size analysis.
Performed radial flow inversion modeling to evaluate the impacts of wellbore radius reduction and packed-layer permeability decline.
Reservoir permeability near the injection end increased from 0.0149 mD to 0.0159 mD, whereas permeability near the packed layer fell from 0.0089 mD to 0.0065 mD.
Identified the boundary between the reservoir and the packed layer as the critical site for severe fine-particle accumulation and permeability damage.
Radial flow inversion showed that reducing wellbore radius increased reservoir pressure disproportionately farther from the wellbore, while packed layer permeability decline caused uniform pressure increases across all locations.

Cite This Study

Liu et al. (2026) studied this question.

synapsesocial.com/papers/6a817a11f2fb91fc834ada76 https://doi.org/10.3390/jmse14161505

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Implication

Experimental study demonstrates localized permeability damage at reservoir-pack boundaries during constant-rate water flooding, indicating critical mechanisms for optimizing gas hydrate well design.

Pressure and Permeability Evolution near Hydrate Exploitation Well During Constant-Rate Water Flooding: An Experimental Study

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Implication

Key Points

Cite This Study

Pressure and Permeability Evolution near Hydrate Exploitation Well During Constant-Rate Water Flooding: An Experimental Study

Discussion

Member takes

Implication

Key Points

Cite This Study

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