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Marine Gas Hydrates: Advances in Petrophysics, Rock Physics and Geophysics
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Marine Gas Hydrates: Advances in Petrophysics, Rock Physics and Geophysics

A special issue of Journal of Marine Science and Engineering (ISSN 2077-1312). This special issue belongs to the section "Geological Oceanography".

Deadline for manuscript submissions: closed (10 May 2023) | Viewed by 3867

Special Issue Editors

Prof. Dr. Changchun Zou

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Guest Editor
School of Geophysics and Information Technology, China University of Geosciences (Beijing), Beijing, China
Interests: petrophysics; rock physics; geophysics; petroleum exploration; unconventional resources; scientific drilling
Dr. Qiang Chen

E-Mail Website
Guest Editor
The Key Laboratory of Gas Hydrate, Ministry of Natural Resources, Qingdao Institute of Marine Geology, Qingdao 266071, China
Interests: natural gas hydrates; thermodynamics properties/electrical properties of hydrate formation and dissociation; marine gas hydrate exploitation
Special Issues, Collections and Topics in MDPI journals
Dr. Cheng Peng

E-Mail Website
Guest Editor
School of Geophysics and Information Technology, China University of Geosciences (Beijing), Beijing, China
Interests: petrophysics; rock physics; geophysics; unconventional resources; scientific drilling

Special Issue Information

Dear Colleagues,

As a clean energy with huge reserve potential, considerable interest has been generated in the exploration, discovery, and exploitation of natural gas hydrates. In recent decades, the investigation of and research on natural gas hydrate have greatly advanced in terms of natural geological characteristics, resource potential assessment, and exploration and production technology. However, the understanding of the mode and microscopic distribution of hydrate reservoirs remains unclear, and the petrophysical properties and response mechanism of the reservoir are not yet well understood. In view of the phase changes of hydrates under temperature and pressure variations, natural gas hydrate formation experimentation and logging while drilling yield petrophysical properties and borehole geophysical responses of hydrates reservoirs. This Special Issue aims to share relevant scientific research on the petrophysical properties and geophysical exploration of hydrate reservoirs and encourages the publication of the latest developments that contribute to the knowledge of hydrate reservoirs.

Prof. Dr. Changchun Zou
Prof. Dr. Qiang Chen
Dr. Cheng Peng
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. Journal of Marine Science and Engineering 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 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

  • marine gas hydrate
  • petrophysics
  • rock physics
  • borehole geophysics
  • geophysical exploration
  • experimental technology
  • artificial intelligence in geophysics
  • formation evaluation
  • case studies

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Published Papers (2 papers)

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Research

21 pages, 28663 KiB  
Article
Numerical Simulation of Electrical Properties for Pore-Scale Hydrate-Bearing Sediments with Different Occurrence Patterns and Distribution Morphologies
by Xixi Lan, Changchun Zou, Cheng Peng, Caowei Wu, Yuanyuan Zhang and Shengyi Wang
J. Mar. Sci. Eng. 2023, 11(6), 1169; https://doi.org/10.3390/jmse11061169 - 2 Jun 2023
Cited by 1 | Viewed by 1588
Abstract
Characterizing the electrical properties of hydrate-bearing sediments, especially resistivity, is essential for reservoir identification and saturation evaluation. The variation in electrical properties depends on the evolution of pore habits, which in turn are influenced by the hydrate growth pattern. To analyze the relationship [...] Read more.
Characterizing the electrical properties of hydrate-bearing sediments, especially resistivity, is essential for reservoir identification and saturation evaluation. The variation in electrical properties depends on the evolution of pore habits, which in turn are influenced by the hydrate growth pattern. To analyze the relationship between hydrate morphology and resistivity quantitatively, different micromorphologies of hydrates were simulated at the pore scale. This study was also conducted based on Maxwell’s equations for a constant current field. During numerical simulation, three types of hydrate occurrence patterns (grain-cementing, pore-filling and load-bearing) and five types of distribution morphologies (circle, square, square rotated by 45°, ellipse and ellipse rotated by 90°) in the pore-filling mode were considered. Moreover, the effects of porosity, the conductivity of seawater, the size of the pore-throat and other factors on resistivity are also discussed. The results show that the variation in resistivity with hydrate saturation can be broadly divided into three stages (basically no effect, slow change and rapid growth). Compared with the grain-cementing and pore-filling modes, the resistivity of the load-bearing mode was relatively high even when hydrate saturation was low. For high hydrate-saturated sediments (Sh > 0.4), the saturation exponent n in Archie equation was taken as 2.42 ± 0.2. The size of the throat is furthermore the most critical factor affecting resistivity. This work shows the potential application prospects of the fine reservoir characterization and evaluation of hydrate-bearing sediments. Full article
(This article belongs to the Special Issue Marine Gas Hydrates: Advances in Petrophysics, Rock Physics and Geophysics)
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14 pages, 4491 KiB  
Article
Identifying Submarine Engineering Geologic Hazards in a Potential Gas Hydrate Target Area on the Southern Continental Margin of the South China Sea
by Zhenqiang Xu, Yang Li, Wei Yan, Yaoyao Lv, Guoqing Zhang, Dongyu Lu and Zuofei Zhu
J. Mar. Sci. Eng. 2022, 10(12), 2008; https://doi.org/10.3390/jmse10122008 - 16 Dec 2022
Cited by 1 | Viewed by 1760
Abstract
The southern continental margin-slope area of the South China Sea is a complex passive continental margin with diverse tectonic structures and movements. This area is rich in gas hydrate resources and is also an area with a high incidence of potential geological hazards. [...] Read more.
The southern continental margin-slope area of the South China Sea is a complex passive continental margin with diverse tectonic structures and movements. This area is rich in gas hydrate resources and is also an area with a high incidence of potential geological hazards. Identifying and understanding the potential submarine geological hazards in this area is very important for disaster prevention and management during the future exploration and development of marine resources. In this paper, five types of potentially hazardous geological bodies are identified in the research area through high-precision two-dimensional seismic processing and interpretation, including submarine mounds, pockmarks, mass transport deposits, submarine collapses and faults. At the same time, the seismic reflection characteristics and the changes in its morphology and surrounding strata are described. In addition to the causes of geological hazards in this region and their influence on exploration and development, the research prospects of geological hazards in this region are also suggested. Special tectonic and sedimentary conditions, fluid activities and hydrate decomposition may be the conditions for geological hazards in this region, which pose a significant threat to the exploration and development of seabed resources and marine engineering construction in this region. Not only does our conclusion provide useful data for the development and utilization of gas hydrate, but it also presents theoretical suggestions for reducing geological hazards in the development process. Full article
(This article belongs to the Special Issue Marine Gas Hydrates: Advances in Petrophysics, Rock Physics and Geophysics)
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