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Water
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Fluid Flow and Transport in Porous and Fractured Media
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Fluid Flow and Transport in Porous and Fractured Media

A special issue of Water (ISSN 2073-4441). This special issue belongs to the section "Hydraulics and Hydrodynamics".

Deadline for manuscript submissions: closed (31 July 2024) | Viewed by 744

Special Issue Editors

Dr. Richeng Liu

E-Mail Website
Guest Editor
State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Xuzhou 221116, China
Interests: fluid flow; fracture network; hydro-mechanical coupling; transport; nonlinearity
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Na Huang

E-Mail Website
Guest Editor
College of Civil Engineering and Architecture, Shandong University of Science and Technology, Qingdao, China
Interests: fluid flow; fracture network; hydro-mechanical coupling; transport; nonlinearity

Special Issue Information

Dear Colleagues,

Fluid flow and transport in porous and fractured media are of special importance in applications of many projects in geosciences and geoengineering, such as CO2 sequestration, enhanced oil recovery, groundwater use, geothermal energy development, risk assessment of water inrush in karst tunnels and coal mines, and design and risk assessment of nuclear waste disposal and undergound crude-oil-storage facilities. The porous media has a large amount of volume, while the fractured media occupies a small amount of volume. However, the fractured media is more permeable than the porous media. Thus, the fluid flow and transport mainly occur within the fractured media, while the porous media stores the fluids. Therefore, it is necessary to clearly understand the fluid flow and transport behaviors of fluids in porous and fractured media. This Special Issue of Water calls for papers presenting recent advances in fluid flow and transport in porous and fractured media on the following topics:

  • Fluid flow in porous media.
  • Fluid flow in fractured media.
  • Transport in porous media.
  • Transport in fractured media.
  • Fluid flow in porous-fractured media.
  • Transport in porous-fractured media.

Papers dealing with fluid flow and transport in porous and fractured media in other topics will also be welcomed.

Dr. Richeng Liu
Prof. Dr. Na Huang
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. Water 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 2600 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

  • fluid flow
  • transport
  • porous media
  • fractured rock mass
  • nonlinearity

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Published Papers (1 paper)

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Research

21 pages, 7399 KiB  
Article
Experimental Study on Proppant Migration in Fractures Following Hydraulic Fracturing
by Zhaokai Hou, Yuan Yuan, Ye Chen, Jinyu Feng, Yinsong Liu and Xu Zhang
Water 2024, 16(14), 1941; https://doi.org/10.3390/w16141941 - 9 Jul 2024
Viewed by 508
Abstract
Complex fracture technology is key to the successful development of unconventional oil and gas reservoirs, such as shale. Most current studies focus on how to improve the complexity of the fracture network. It is still unclear whether proppant can enter the branch fractures [...] Read more.
Complex fracture technology is key to the successful development of unconventional oil and gas reservoirs, such as shale. Most current studies focus on how to improve the complexity of the fracture network. It is still unclear whether proppant can enter the branch fractures at all levels after the formation of complex fractures. The effects of construction displacement, proppant particle size, proppant density, fracturing fluid viscosity, sand ratio, and other factors on proppant migration in single fractures and complex fractures were studied using an experimental device independently developed by the laboratory. The results show that the lowest point height of the sandbank and the equilibrium height of the sandbank are directly proportional to the particle concentration and density, respectively, and inversely proportional to the displacement and fracturing fluid viscosity. The equilibrium time of the sandbank is inversely proportional to the displacement, particle concentration, and density, respectively, and proportional to the viscosity of the fracturing fluid. Under the same experimental conditions, the larger the branch angle, the smaller the height of the main/secondary fracture sandbank. In the design of the fracturing process, fracturing fluid with varying viscosities and proppant with different densities should be selected according to the formation conditions and fracturing targets. In the face of long fracture lengths, the combination of low-viscosity fracturing fluid with an appropriate viscosity and low-density proppant can meet the goal of placing proppant over long distances and effectively supporting fractures over extended lengths. Subsequently, high-density proppant or reduced construction displacement are adopted to usefully support fractures in the near-wellbore area. The results of this paper can provide theoretical support for proppant selection and fracturing program design. Full article
(This article belongs to the Special Issue Fluid Flow and Transport in Porous and Fractured Media)
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