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Advances in Gas Hydrate Drilling and Exploitation Technology

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

Deadline for manuscript submissions: 10 August 2024 | Viewed by 960

Special Issue Editors


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Guest Editor
College of Construction Engineering, Jilin University, Changchun 130026, China
Interests: drilling and exploitation technology of gas hydrate; drilling and exploitation technology of oil shale; new technology for rock crushing; development of geothermal resources

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Guest Editor
College of Construction Engineering, Jilin University, Changchun 130026, China
Interests: drilling and exploitation technology of gas hydrate; mechanism of hydraulic fracture

E-Mail Website
Guest Editor
College of Resources and Environmental Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China
Interests: drilling and exploitation technology of gas hydrate; seepage erosion; fluid solid coupling

Special Issue Information

Dear Colleagues,

The development of alternative energy sources is essential to the future world energy paradigm due to the rapid reduction in the reserves of conventional oil and gas reservoirs. Natural gas hydrates, which are widely distributed in huge reserves worldwide with low-carbon properties, have become a research highlight in the energy field in recent years. The geological mechanics, reservoir properties, and exploitation mechanisms of natural gas hydrate reservoirs are significantly different from those of conventional oil and gas reservoirs. This leads to the need for special theories, technologies and processes for the economic and safe development of hydrate reservoirs. This Special Issue aims to explore the most recent advances in geological mechanics, drilling mechanics, exploitation technologies, and stimulation technologies involved in the drilling and exploitation of natural gas hydrate.

Topics of interest for this Special Issue include, but are not limited to, the following:

Reservoir characterization of natural gas hydrate;

Basic theory of natural gas hydrate and multi-phase seepage in reservoir;

Hydrate-bearing sediments mechanics and reservoir drilling mechanics;

Drilling technology for nature gas hydrate reservoirs;

Reservoir stimulation technology for natural gas hydrate;

Environmental issues and challenges in natural gas hydrate exploitation.

Prof. Dr. Chen Chen
Dr. Xiuping Zhong
Dr. Dongbin Pan
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. Energies 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

  • natural gas hydrate
  • mechanics of sediments
  • multiphase seepage
  • reservoir stimulation
  • reservoir description

Published Papers (1 paper)

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Research

19 pages, 23935 KiB  
Article
Numerical Investigation on Mesoscale Evolution of Hydraulic Fractures in Hydrate-Bearing Sediments
by Xiaowei Liang, Hui Zhao, Yongchao Dang, Qihong Lei, Shaoping Wang, Xiaorui Wang, Huiqiang Chai, Jianbo Jia and Yafei Wang
Energies 2023, 16(22), 7502; https://doi.org/10.3390/en16227502 - 09 Nov 2023
Viewed by 599
Abstract
Hydraulic fracturing is widely recognized as a potential stimulation technology for the development of challenging natural gas hydrate. However, the fracturing behavior of non-diagenetic hydrate reservoirs has peculiar characteristics that are different from those of conventional oil and gas reservoirs. Herein, a fully [...] Read more.
Hydraulic fracturing is widely recognized as a potential stimulation technology for the development of challenging natural gas hydrate. However, the fracturing behavior of non-diagenetic hydrate reservoirs has peculiar characteristics that are different from those of conventional oil and gas reservoirs. Herein, a fully coupled fluid-mechanical model for simulating hydraulic fracturing in hydrate-bearing sediments (HBS) was established based on the discrete element method, and the influence of hydrate saturation, in situ stress, and injection rate on the meso-fracture evolution was investigated. The results indicate that with the increase in hydrate saturation, the fracture morphology transitions from bi-wing to multi-branch, thereby enhancing fracture complexity. Both tensile and shear failure modes exist, and the tensile failure between the weakly cemented sediment particles is dominant. The tensile strength of HBS is an exponential function of hydrate saturation, with the breakdown pressure being governed by hydrate saturation and in situ stress, with the form being consistent with the classical Kirsch equation. Additionally, lower in situ stress and higher injection rates are conducive to the generation of microcracks, whereas an excessive injection rate reduces the fracture length. These findings contribute to understanding the meso-evolution mechanism of hydraulic fractures and guide the design of on-site hydraulic fracturing plans of natural gas hydrate reservoirs. Full article
(This article belongs to the Special Issue Advances in Gas Hydrate Drilling and Exploitation Technology)
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