Investigation into gas production from natural gas hydrate: A review

Gas hydrates have received considerable attention due to their important role in flow assurance for the oil and gas industry, their extensive natural occurrence on Earth and extraterrestrial planets, and their significant applications in sustainable technologies including but not limited to gas and energy storage, gas separation, and water desalination Given not only their inherent structural flexibility depending on the type of guest gas molecules and formation conditions, but also the synthetic effects of a wide range of chemical additives on their properties, these variabilities could be exploited to optimise the role of gas hydrates This includes increasing their industrial applications, understanding and utilising their role in Nature, identifying potential methods for safely extracting natural gases stored in naturally occurring hydrates within the Earth, and for developing green technologies This review summarizes the different properties of gas hydrates as well as their formation and dissociation kinetics and then reviews the fast-growing literature reporting their role and applications in the aforementioned fields, mainly concentrating on advances during the last decade Challenges, limitations, and future perspectives of each field are briefly discussed The overall objective of this review is to provide readers with an extensive overview of gas hydrates that we hope will stimulate further work on this riveting field

Gas hydrates in sustainable chemistry

Methane hydrates: A future clean energy resource

Permeability of hydrate-bearing sediments

Knowledge of the fracturing behaviors in gas-hydrate-bearing sediments is essential to understand the accumulation mechanism of gas hydrates in fractured sediments and to apply hydraulic fracturing as a well stimulation method when considering gas recovery from gas hydrate reservoirs. We present an experimental study of hydraulic fracturing involving methane-hydrate-bearing sand formed in a triaxial pressure cell. The injection pressure rapidly increased after the start of distilled water injection from the core top through a small port, but suddenly decreased afterward. X-ray computed tomography revealed that laminar fractures, which were oriented in a plane perpendicular to the minimum principal stress, were generated after this pressure drop. The fracturing pressure was 2.9–3.9 MPa above the minimum principal stress. Although the host sediment was unconsolidated, the observed fracture behavior yielded a consolidated-rock-like fracturing mode, i.e., the tensile failure mode. It was affected by the low-permeable feature of hydrate-bearing sediments. The permeability was increased after fracturing and was maintained even after re-confining and closing the fractures. The results indicate that hydraulic fracturing is a promising well stimulation method for low-permeable gas hydrate reservoirs.

/pdf/hydraulic-fracturing-in-methane-hydrate-bearing-sand-9t5oj7gy00.pdf

Hydraulic fracturing in methane-hydrate-bearing sand

The largest sources of hydrocarbons worldwide are distributed in the permafrost and submarine sediments in the form of methane hydrates, but exploitation of these hydrocarbons is still years away from being economical, safe, and commercially viable; thus, further research is needed. To analyze the characteristics of methane hydrate (MH) dissociation and evaluate the gas production during the application of different MH decomposition methods, this study firstly compared MH dissociation during depressurization, thermal stimulation, and combined method (depressurization + thermal stimulation) treatments using magnetic resonance imaging (MRI) in situ observation. In particular, the influences of back-pressure and temperature on hydrate dissociation, the hydrate saturation, the rate of hydrate dissociation and MRI images from each of the three methods were investigated. The results proved that during application of the depressurization and combined methods at different back-pressures (2.2–2.6 MPa), the MH dissociation proceeded via radial dissociation rather than axial dissociation; moreover, during the application of the thermal stimulation method at different dissociation temperatures (278.15–288.15 K), the MH dissociated uniformly. Overall, a combination of depressurization and thermal stimulation at the initial stage of hydrate decomposition was proposed and comparison of the three methods demonstrated that the combined method had obvious advantages for methane treatment. Specifically, the combined method was capable of solving the problems related to low gas production and poor energy efficiency that were encountered when using either the depressurization or thermal stimulation method alone.

Assessment of gas production from natural gas hydrate using depressurization, thermal stimulation and combined methods

In-situ visual observation for the formation and dissociation of methane hydrates in porous media by magnetic resonance imaging

Experimental study on the gas phase permeability of methane hydrate-bearing clayey sediments

Handle everyday research tasks with reliable, citation-backed results

Your personal Research Agent to handle research tasks with citation-backed results

Popular Tasks used by Researchers

How can I help with your research?

Meet SciSpace

Get more enhanced response by uploading the PDFs you want me to reference.

No relevant PDFs in your library

SciSpace is the AI research assistant for academics. Run systematic literature reviews on 280M+ papers, and write papers with cited sources. Trusted by 1M+ students, PhDs & researchers.

SciSpace | AI for Research

Analyze PDFs

Code & Manuscripts

Funding & Grants

Literature & Patents

Medical & Clinical Data

Systematic Review

Visualize & Present

Web & Data

Build a Google Scholar-like website for your research.

Build a website

Create charts and images for your research

Create a Chart

Write a paper for submission to a journal

Draft a manuscript

Patent Search

Design eye-catching scientific posters in minutes.

Scientific Poster Generation

Systematic Literature Review

One task is running at the moment. Your messages will be shown right after.

Drag and drop or click here to browse

Loved by <highlight>1 million+</highlight> researchers

Extract a list of specific topics and their sources from unstructured text

Topics

Compare and analyze relevant papers that matches with your search

Papers

Get insights from PDFs and bookmarked papers from your library

My library

Recent searches

Try searching for:

Catch AI-generated content in scholarly and non-scholarly content

{ai} Detector

Ai Writer

Get PDF Summaries, highlighted text explanations 

Chat with PDF

Effortlessly create in-text citations and bibliographies in APA and 2,500 other formats

Citation generator

Get explanations, summaries, and answers on academic papers

Ease up your research workflow with {scispace}'s cohort of exciting AI tools

Elevate your academic writing skills and convey your ideas the way you want

Paraphraser

Explore our range of reading and writing tools

Your file is being prepared and should be ready in a few minutes. If it's a large file, it might take a bit longer. You can close this window, and we'll email you the file when it's done.

You have reached a maximum limit of <strong>{limit}</strong> columns in the table. Remove at least <strong>1</strong> column to add or create another one.

Qin Lv

Author Tools

Chat about Author

Papers

Assessment of gas production from natural gas hydrate using depressurization, thermal stimulation and combined methods

In-situ visual observation for the formation and dissociation of methane hydrates in porous media by magnetic resonance imaging

Experimental study on the gas phase permeability of methane hydrate-bearing clayey sediments