Indian margin methane hydrate dissociation recorded in the carbon isotopes of benthic (Miliolida) foraminifera

Clemens, Steven C.; Thirumalai, Kaustubh; Oppo, Davide

doi:10.1016/j.epsl.2023.118101

Cited by 5 publications

(2 citation statements)

References 72 publications

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“…Onesixth of the world's CH 4 (a potent but transient greenhouse gas with 28 times global warming potential (GWP) compared to CO 2 as per the IPCC fifth assessment report (AR5) and US EPA reports) is trapped on the ocean floor in ice-like clathrate forms. High concentrations of vital greenhouse gas have been found down to 350 m. Evidence shows that the frozen CH 4 reserves in the Siberian Arctic permafrost 180 and Mahanadi basin 181 have begun to leak over a sizable portion primarily due to warming waters. Though the CH 4 bubbles were identified to be dissolving in water, the surface CH 4 concentrations were four to eight times higher than previously estimated, venting more CH 4 gas into the atmosphere.…”

Section: Challenges Gaps and Future Recommendations For Exchange-base...mentioning

confidence: 99%

Review and Perspectives of Energy-Efficient Methane Production from Natural Gas Hydrate Reservoirs Using Carbon Dioxide Exchange Technology

et al. 2023

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Natural gas hydrates are unconventional abundant hydrocarbon energy resources that can guarantee energy sustainability with little environmental impact. The solid nature of the resource, distinct thermodynamic characteristics, and accumulations at shallow depths make the existing conventional production techniques unviable. Among all the currently explored production techniques, the hydrate-based carbon capture and sequestration (HBCCS) technique is expected to improve production, proven to be geomechanically safer, and conceptualized to be environmentally friendly. In this carbon-neutral production concept, carbon emissions are effectively sequestered for the long-term. This review presents a comprehensive overview and perspective of the CO 2 exchange-based approach to extract methane (CH 4 ) from naturally occurring gas hydrate reserves, emphasizes its prospect as a suitable alternative according to the current energy demands and climate concerns, establishes its environmental and production challenges, and demonstrates the recent developments. This review focuses on the production aspect and discusses the mechanism of the exchange process, experimental and modeling studies, various in situ production tests using different techniques on multiple sediments, and production challenges associated with the exchange process. The aspects of geomechanics and possibilities of fracturing in hydrate reservoirs are also discussed elaborately. A suitable and effective technique is yet to be established to produce natural gas commercially by addressing the existing challenges like sand production, seafloor stability concerns, marine ecosystem problems, low production rate, uncontrolled dissociation, water production, etc. Although the CO 2 exchange-based method is thermodynamically favorable, rapid crystallization of CO 2 restricts mass transfer and prevents continuous exchange. The exchange process is also influenced by heat, salinity, residual water saturation, exchange gas composition, injection phase, injection pressure, sediment properties, etc. There is a need to study the CO 2 −CH 4 exchange process at a fundamental level and at a larger scale, to understand its intricacies. In tandem with comprehensively discussing the subject, this review has listed the issues that require tenable solutions, which shall be helpful to readers who wish to work on production from CH 4 hydrates using the CO 2 exchange process. Methane hydrates shall be one of the strategic energy sources to meet our growing energy requirements for a sustainable future.

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Section: Challenges Gaps and Future Recommendations For Exchange-base...mentioning

confidence: 99%

Review and Perspectives of Energy-Efficient Methane Production from Natural Gas Hydrate Reservoirs Using Carbon Dioxide Exchange Technology

et al. 2023

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“…Recently Lauvaux et al [13] focused their studies on detecting oil and gas leaks that can be plugged if companies want to invest in prevention. In addition, about 2% of the atmospheric methane is from the seafloor methane seepage due to the gas hydrate dissociation activity contributed by climate change [14,15] . Despite these recent studies, an appropriate understanding of the interplay between methane sources and sinks is not completely known.…”

Section: Rise In Methane Gas In the Environmentmentioning

confidence: 99%

Combating Climate Change and Global Warming for a Sustainable Living in Harmony with Nature

Balaram

2023

j. of geogr. res.

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As humanity has been polluting the atmosphere with greenhouse gases, the planet is getting warmed up which is triggering the frequency and the intensity of extreme events like heat waves, dry conditions, wildfires, cyclones, tornadoes, lightning, and massive flooding all over the planet Earth. There is considerable evidence that the concentration of greenhouse gases, especially that of CO2 has steadily increased in the atmosphere as a result of the indiscriminate use of fossil fuels around the world particularly during the last 70 years. The glaciers in the high mountain and polar regions are diminishing fast, sea levels are rising, and food production is being affected severely in certain parts of the world. In fact, the changing climate has currently become one of the major threats to the survival of civilization. The world scientific communities are warning of a climate emergency and requesting the decision makers to promptly respond and act to sustain life on planet Earth. To deliver net zero emissions by the year 2050, the whole world must phase out the technologies such as coal-powered thermal plants and diesel/petrol/gasoline-powered vehicles which release abundant amounts of CO2 and other greenhouse gases into the atmosphere and invest in the development of clean energies such as hydel, wind, solar, space-solar, and nuclear energies. This transition to a low carbon economy with the help of these technologies together with other technologies such as hydrogen fuel, fuel cells, electric vehicles, and massive plantations is expected to take our planet Earth to a safe zone in the coming 20-30 years.

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Enrichment pattern of tungsten in sediments under methane seepage environments: Applicability as a proxy for tracing and reconstructing (paleo-)methane seepage

Miao,

Oppo,

Wei

et al. 2024

Chemical Geology

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Indian margin methane hydrate dissociation recorded in the carbon isotopes of benthic (Miliolida) foraminifera

Cited by 5 publications

References 72 publications

Review and Perspectives of Energy-Efficient Methane Production from Natural Gas Hydrate Reservoirs Using Carbon Dioxide Exchange Technology

Review and Perspectives of Energy-Efficient Methane Production from Natural Gas Hydrate Reservoirs Using Carbon Dioxide Exchange Technology

Combating Climate Change and Global Warming for a Sustainable Living in Harmony with Nature

Enrichment pattern of tungsten in sediments under methane seepage environments: Applicability as a proxy for tracing and reconstructing (paleo-)methane seepage

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