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Multiscale and Multiphysics Processes in Unconventional Formations 2021

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "H: Geo-Energy".

Deadline for manuscript submissions: closed (20 October 2021) | Viewed by 4908

Special Issue Editors


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Guest Editor
Department of Chemical and Biomedical Engineering, College of Engineering and Physical Sciences, University of Wyoming, Laramie, WY 82071, USA
Interests: enhanced oil recovery (EOR); interfacial science and complex fluids
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Guest Editor
Department of Energy Resources Engineering, Stanford University, Stanford, CA 94305-2220, USA
Interests: visualization of transport processes in porous media; characterization of unconventional rocks; enhanced/improved recovery
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The emergence of production techniques for unconventional reservoirs has had a transformative effect on the oil and gas industry. Drilling in shale gas and oil reservoirs has given rise to the concept of well manufacturing, making accessibility to these resources a commercial reality. While shale production has profoundly changed energy supply, only about 5% of the oil and about 25% of the gas in oil/gas shales is recovered. Initial productivity decreases markedly after a few months. Research and development activities are required to increase long-term productivity by unveiling storage and production mechanisms that are poorly understood at present. Given the inherent multiscale nature of the rock fabric, spanning 10 orders of magnitude in spatial scales, advances in multiscale characterization and modeling techniques are needed. This Special Issue welcomes research studies on unconventional multiscale reservoir characterization, geochemical, geomechanical and geostatistical studies, model systems, phase behavior in tight rock, and modeling methods of the variety of physicochemical processes in unconventional formations. Original contributions and truly critical reviews integrating scales and disciplines are welcome.

Prof. Dr. Vladimir Alvarado
Prof. Dr. Anthony Kovscek
Guest Editors

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Keywords

  • Experimental characterization techniques
  • Transport modeling methods
  • Fundamental studies of coupled transport, reaction, and/or mechanics
  • Geochemical characterization
  • Geomechanical characterization
  • Phase behavior in unconventional rock
  • Fluid–rock interactions
  • Published Paper

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Published Papers (1 paper)

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Review

24 pages, 2477 KiB  
Review
Use of Gas Adsorption and Inversion Methods for Shale Pore Structure Characterization
by Bryan X. Medina-Rodriguez and Vladimir Alvarado
Energies 2021, 14(10), 2880; https://doi.org/10.3390/en14102880 - 17 May 2021
Cited by 23 | Viewed by 4482
Abstract
The analysis of porosity and pore structure of shale rocks has received special attention in the last decades as unconventional reservoir hydrocarbons have become a larger parcel of the oil and gas market. A variety of techniques are available to provide a satisfactory [...] Read more.
The analysis of porosity and pore structure of shale rocks has received special attention in the last decades as unconventional reservoir hydrocarbons have become a larger parcel of the oil and gas market. A variety of techniques are available to provide a satisfactory description of these porous media. Some techniques are based on saturating the porous rock with a fluid to probe the pore structure. In this sense, gases have played an important role in porosity and pore structure characterization, particularly for the analysis of pore size and shapes and storage or intake capacity. In this review, we discuss the use of various gases, with emphasis on N2 and CO2, for characterization of shale pore architecture. We describe the state of the art on the related inversion methods for processing the corresponding isotherms and the procedure to obtain surface area and pore-size distribution. The state of the art is based on the collation of publications in the last 10 years. Limitations of the gas adsorption technique and the associated inversion methods as well as the most suitable scenario for its application are presented in this review. Finally, we discuss the future of gas adsorption for shale characterization, which we believe will rely on hybridization with other techniques to overcome some of the limitations. Full article
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