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Applied Sciences
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Carbon Capture, Storage, and Unconventional Gas: Geological and Environmental Perspectives
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Carbon Capture, Storage, and Unconventional Gas: Geological and Environmental Perspectives

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Energy Science and Technology".

Deadline for manuscript submissions: 30 September 2026 | Viewed by 795

Special Issue Editors

Dr. Run Chen

E-Mail Website
Guest Editor
Carbon Neutrality Institute, China University of Mining and Technology, Xuzhou 221008, China
Interests: carbon neutrality; unconventional natural gas; CO2 geostorage
Special Issues, Collections and Topics in MDPI journals
Dr. Linlin Wang

E-Mail Website
Guest Editor
Carbon Neutrality Institute, China University of Mining and Technology, Xuzhou 221008, China
Interests: CO2 geostorage; coal and coalbed methane geology; structural geology
Prof. Dr. Ben J. Anthony

E-Mail Website
Guest Editor
Energy and Power Theme, Cranfield University, Cranfield, Bedfordshire MK43 0AL, UK
Interests: carbon capture and storage; renewable energy
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The integration of Carbon Capture, Utilization, and Storage (CCUS) technology with unconventional natural gas development provides a critical pathway toward global carbon neutrality goals. Using CCUS technology, industrially emitted CO2 is captured and sequestered in geological formations (such as depleted oil and gas reservoirs or saline aquifers) or utilized for enhanced oil/gas recovery, achieving both emission reduction and resource utilization. The development of unconventional natural gas (shale gas, coalbed methane) relies on CCUS technology to reduce its lifecycle carbon emissions, forming a synergistic "gas reservoir development-carbon sequestration" model.

This Special Issue will focus on the geological environmental interactions among Carbon Capture, Utilization, and Storage (CCUS) technologies and unconventional natural gas development to achieve carbon neutrality goals through interdisciplinary integration. Submissions should cover the long-term safety of CO2 geological storage, the carbon sequestration potential of unconventional gas reservoirs (such as shale gas), and the impact of related technologies on environmental risks such as groundwater systems and seismic activities. The Special Issue aims to integrate geological engineering, environmental science, and policy research to provide innovative solutions for large-scale emission reduction.

Dr. Run Chen
Dr. Linlin Wang
Prof. Dr. Ben J. Anthony
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 250 words) can be sent to the Editorial Office for assessment.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Applied Sciences is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • carbon capture
  • geological storage
  • enhanced unconventional natural gas recovery
  • environmental risk assessment
  • policy and economics
  • interdisciplinary approaches

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Published Papers (1 paper)

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Research

26 pages, 4662 KB  
Article
Evolution of Dynamic Elastic Parameters and Dry-Out-Induced Weakening Mechanisms in Reservoir and Caprock During Underground Gas Storage: Joint Ultrasonic and NMR Monitoring
by Yan Wang, Zhen Zhai, Quan Gan, Saipeng Huang, Limin Li, Juan Zeng, Tingjun Wen and Sida Jia
Appl. Sci. 2026, 16(8), 4053; https://doi.org/10.3390/app16084053 - 21 Apr 2026
Viewed by 495
Abstract
Understanding dry-out-induced weakening of reservoir and caprock rocks driven by gas displacement is critical for ensuring the operational safety and efficiency of underground gas storage (UGS). Using core samples from the Xiangguosi UGS collected from different regions and stratigraphic intervals, we quantify the [...] Read more.
Understanding dry-out-induced weakening of reservoir and caprock rocks driven by gas displacement is critical for ensuring the operational safety and efficiency of underground gas storage (UGS). Using core samples from the Xiangguosi UGS collected from different regions and stratigraphic intervals, we quantify the evolution of dynamic elastic parameters during simulated downhole dry-out with a joint ultrasonic and nuclear magnetic resonance (NMR) monitoring system. The results show that as water saturation (Sw) decreases, the dynamic bulk modulus (Kd) and P-wave velocity (Vp) decline by varying degrees across specimens, with reductions ranging from 3.0% to 50.48% and from 1.34% to 17.56%, respectively, whereas the dynamic shear modulus (Gd) and S-wave velocity (Vs) show only minor variations throughout the process. These findings demonstrate that the sensitivity of dynamic parameters to dry-out is strongly specimen-dependent. Further analysis indicates that the dry-out response is highly variable and depends on a combination of petrophysical properties. Among these, the heterogeneity of the initial pore structure acts as an important factor, with its influence shaped by mineralogy and bulk frame rigidity. Cores with multimodal pore size distributions and well-developed macropores (long T2 components) respond more strongly to dry-out, whereas higher clay mineral contents tend to mitigate modulus degradation by retaining water under stronger capillary confinement. Based on these observations, we propose a conceptual model of pore support and skeleton constraint. The model suggests that dry-out weakening arises from a progressive loss of pore fluid volumetric support to the rock skeleton as free water is preferentially displaced from meso- and macropores. These findings provide key experimental evidence and mechanistic insights for using geophysical methods to monitor dry-out zone expansion and to assess long-term formation stability in UGS. Full article
(This article belongs to the Special Issue Carbon Capture, Storage, and Unconventional Gas: Geological and Environmental Perspectives)
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