Author
Weiguo Liu
Other affiliations: Chinese Ministry of Education
Bio: Weiguo Liu is an academic researcher from Dalian University of Technology. The author has contributed to research in topics: Hydrate & Clathrate hydrate. The author has an hindex of 29, co-authored 116 publications receiving 2856 citations. Previous affiliations of Weiguo Liu include Chinese Ministry of Education.
Topics: Hydrate, Clathrate hydrate, Methane, Natural gas, Overburden pressure
Papers
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TL;DR: In this paper, the authors investigated the gas production from methane hydrate-bearing sediments, and compared the three methods: depressurization, two-cycle warm-water injection and a combination of the two methods.
314 citations
TL;DR: In this article, the authors investigated the role of the sensible heat of the reservoir and ambient heat transfer in hydrate dissociation in natural gas hydrate reformation and ice generation.
290 citations
TL;DR: In this paper, the potential studies pertaining to gas hydrate exploration and resource assessment, the safe and efficient exploitation of gas hydrates and the basic properties of gas hyddrates are reviewed.
Abstract: Over the past century, fossil fuels have provided the majority of China's energy. However, their extensive utilization leads to a shortage and environmental pollution. Recently, submarine and permafrost gas hydrate deposits have been investigated as a possible clean and sustainable energy source by governmental institutions, research organizations, and energy industries in China. The primary objective of this paper is to review the potential studies pertaining to gas hydrate exploration and resource assessment, the safe and efficient exploitation of gas hydrates and the basic properties of gas hydrates. To date, there are over 20 institutions and organizations in China committed to gas hydrate investigation, among which the Guangzhou Marine Geological Survey (GMGS) and the Chinese Academy of Geological Sciences (CAGS) etc. primarily focus on gas hydrate exploration research, while the China National Offshore Oil Corporation (CNOOC) Research Center, Guangzhou Institute of Energy Conversion (GIEC) and China University of Petroleum-Beijing (CUPB) etc. concentrate on gas hydrate mining technologies. In this paper, the occurrence and exploration of gas hydrates in both permafrost regions and the continental slope of China have been determined from numerous research contributions and are presented. Moreover, the latest progress in gas hydrate fundamental studies, including hydrate phase equilibria, hydrate formation mechanisms, hydrate thermal physical properties and the acoustics and resistivity characteristics of gas hydrates are briefly reviewed, and relevant data are gathered and compared. Emphasis is also placed on gas hydrate mining technologies and gas production using depressurization methods, thermal stimulation methods or other methods. Furthermore, the security of natural gas hydrate-bearing sediments during gas production and the environmental impacts of gas hydrate are identified. With additional financial and political support and advanced research facilities, research on gas hydrates in China is progressing rapidly but is still in its early developing stage, thus, future work should be undertaken with greater diligence.
212 citations
TL;DR: In this paper, a photovoltaic/thermal (PV/T) system using both non-concentrated and concentrated solar radiation is presented, where the optical properties of the working fluid were modeled based on the damped oscillator Lorentz-Drude model satisfying the Kramers-Kronig relations.
133 citations
TL;DR: In this paper, the authors used a single vertical well by depressurization method to simulate the gas production potential of the gas hydrate deposits in the Qilian Mountain permafrost.
114 citations
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TL;DR: In this article, the authors review various studies on resource potential of natural gas hydrate, the current research progress in laboratory settings, and several recent field trials, and discuss possible limitation in each production method and the challenges to be addressed for large scale production.
1,236 citations
TL;DR: In this article, the authors reviewed the current status of CO2 capture patents and technologies based on the Espacenet patent database and found that more than 1000 patents have been published on sorbent, solvent, and membrane.
554 citations
TL;DR: In this paper, dry solid adsorbents are classified into non-carbonaceous (e.g., zeolites, silica, metal-organic frameworks and porous polymers, alkali metal, and metal oxide carbonates) and carbonaceous materials with a focus on recent research.
525 citations
TL;DR: In this paper, the authors comprehensively review the relevant studies of natural gas hydrates and propose their comments, discuss the limitations and challenges, raise some questions and put forward some suggestions from their points of view.
474 citations