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Atmosphere
Special Issues
Recent Advances in Adsorption and Diffusion of Shale Gases
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Recent Advances in Adsorption and Diffusion of Shale Gases

A special issue of Atmosphere (ISSN 2073-4433). This special issue belongs to the section "Air Pollution Control".

Deadline for manuscript submissions: closed (22 June 2022) | Viewed by 3782

Special Issue Editors

Dr. Miao Zhang

E-Mail Website
Guest Editor
College of Petroleum Engineering, China University of Petroleum-Beijing, Beijing 102249, China
Interests: mathematical modeling of unconventional reservoirs, multiphase flow in porous media, hydrocarbon phase behavior
Dr. Jing Li

E-Mail Website
Guest Editor
College of Petroleum Engineering, China University of Petroleum-Beijing, Beijing 102249, China
Interests: unconventional gas/oil resources; fracturing fluids; reservoir simulation; gas/liquid sorption/diffusion; nano-micro fluidics
Dr. Jianchun Xu

E-Mail Website
Guest Editor
School of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, China
Interests: reservoir numerical simulation; production optimization; history matching/inverse problem; unconventional oil/gas
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Natural gas, primarily consisting of methane, has become one of the most attractive energy sources among fossil fuels for its considerable reserves, economic efficiency, and low emission. Especially, the key feature with less emission of carbon dioxide (CO2) and other toxic pollutants compared to fossil fuel, not only assists in ameliorating global warming but also can help to reduce air pollution and thus improve air quality.

Shale gas is now an indispensable part of the global energy system. Due to the existence of abundant nanopores, organic-rich lithotypes, initial water saturations or moistures, complex pore structures, as well as the harsh geologic conditions of high pressures and high temperatures (HPHT), the transport and storage characteristics of gas in shales are not yet fully understood. The mechanisms of diffusion and adsorption of shale gas and CO2 have been repeatedly shown to play significant roles in the transport, storage, and recovery of shale gas resources, but there remain uncertainties in the scientific and engineering understanding of these processes. Accurate predictions of shale gas well performance, during primary recovery and CO2 enhancing gas recovery, still face many challenges.

This Special Issue aims at gathering new research contributions (in the form of research articles, review articles and short communications) on the diffusion and sorption of shale gases. We welcome submissions from different research areas, from science to engineering, and to cover theory, experiment, and application. Topics in this Special Issue include, but are not limited to, diffusion and transport theories and processes of shale gas and CO2, carbon capture, utilization, and storage technologies (CCUS), and shale gas well performance and field observations.

Dr. Miao Zhang
Dr. Jing Li
Dr. Jianchun Xu
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 100 words) can be sent to the Editorial Office for announcement on this website.

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. Atmosphere is an international peer-reviewed open access monthly 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

  • shale gas
  • carbon sequestration
  • gas diffusion
  • adsorption/desorption
  • thermodynamics
  • micro/nano-flow
  • fluid-solid interactions

Published Papers (2 papers)

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Research

19 pages, 6490 KiB  
Article
Gas Diffusion and Flow in Shale Nanopores with Bound Water Films
by Tianyi Zhao and Yuan Ji
Atmosphere 2022, 13(6), 940; https://doi.org/10.3390/atmos13060940 - 9 Jun 2022
Viewed by 1862
Abstract
Shale reservoirs are rich in nanoscale pore-microfractures, and generally contain water (especially inorganic pores) under reservoir conditions. Therefore, evaluating gas flow capacity under water-bearing conditions is of great significance for analyzing reservoir capacity and forecasting production. Based on the single-phase gas transfer theory [...] Read more.
Shale reservoirs are rich in nanoscale pore-microfractures, and generally contain water (especially inorganic pores) under reservoir conditions. Therefore, evaluating gas flow capacity under water-bearing conditions is of great significance for analyzing reservoir capacity and forecasting production. Based on the single-phase gas transfer theory in nanopores, we established a gas transport model in both circular pores and slit pores by considering pore-fracture patterns of actual samples. As will be shown, inorganic pore fractures are mostly slit-type, while organic pores are mostly circular. This gas transport model also uses weighting coefficients superimposed on slip flow and molecular free flow. Further, the effect of water saturation on gas flow is quantified by considering the distribution characteristics of inorganic and organic pores in shale and also by combining the pore distribution characteristics of actual samples. The flow characteristics of gas in organic and inorganic pores under water-bearing conditions in the reservoir are further compared. The study lays a theoretical foundation for the reasonable evaluation and prediction of shale gas well capacity under reservoir water conditions. Full article
(This article belongs to the Special Issue Recent Advances in Adsorption and Diffusion of Shale Gases)
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15 pages, 2920 KiB  
Article
Modelling Methane Adsorption Isotherms on Shale at Different Temperatures
by Dongqing Zhang
Atmosphere 2022, 13(6), 865; https://doi.org/10.3390/atmos13060865 - 25 May 2022
Cited by 3 | Viewed by 1500
Abstract
Prediction of adsorption isotherms under different temperatures is significant to reserve estimation of shale gas reservoirs. Based on the Polanyi adsorption potential theory and Langmuir adsorption theory, a method was presented to predict adsorption isotherms at different temperatures. In this method, the relationship [...] Read more.
Prediction of adsorption isotherms under different temperatures is significant to reserve estimation of shale gas reservoirs. Based on the Polanyi adsorption potential theory and Langmuir adsorption theory, a method was presented to predict adsorption isotherms at different temperatures. In this method, the relationship between Langmuir pressure and temperature was quantified. By utilizing this method, we predicted adsorption isotherms of Longmaxi shale from 45 °C to 120 °C according to experimental data at 30 °C. Meanwhile, by considering the pressure and temperature gradients, we also predicted the adsorption capacity of Longmaxi shale with geologic depth. Results show that the adsorption data predicted by our method are in accord with experimental data and the error coefficient is less than 5%. In addition, the isosteric heat of adsorption for Longmaxi shale can be calculated by predicted adsorption data based on the Clausius–Clapeyron equation of capillary systems. Therefore, our study illustrates theoretical foundations for the efficient evaluation of adsorbed gas content in shale gas reservoirs at geologic conditions. Full article
(This article belongs to the Special Issue Recent Advances in Adsorption and Diffusion of Shale Gases)
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