Methane hydrate formation in excess water simulating marine locations and the impact of thermal stimulation on energy recovery

Chong, Zheng Rong; Pujar, Girish Anand; Yang, Mingjun; Linga, Praveen

doi:10.1016/j.apenergy.2016.05.077

Cited by 172 publications

(82 citation statements)

References 74 publications

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“…Although global gas hydrate resource estimates lower than previous results, we should recognize that gas hydrate is an energy resource with massive amounts of stored methane, twice the amount of carbon found in all fossil fuels on Earth (Chong et al, 2016). The United States Department of Energy International Outlook report of 2013 proposed that global energy consumption would increase by 56% from 524 quadrillion BTU in 2010 to 820 quadrillion BTU in 2040 (US E.I.A., 2013).…”

Section: Gas Hydrates As a Potential Energy Resourcementioning

confidence: 87%

“…As energy portfolios and infrastructure transition to a gas-based economy, the more extensive geographic distribution and high energy density of gas hydrates would likely ignite interest from global research groups and industry. Additionally, gas hydrates are considered to generate less carbon dioxide per unit of energy than other fossil fuels, such as oil and coal; therefore, using gas hydrates as an alternative energy resource is a promising strategy for slowing greenhouse warming induced by carbon dioxide emissions (Chong et al, 2016;Koh et al, 2016).…”

Section: Gas Hydrates As a Potential Energy Resourcementioning

confidence: 99%

“…The other concept, known as CO 2 -CH 4 replacement, is based on replacing methane in hydrates with another gas molecule (CO 2 or mixed gases) resulting in more thermodynamically more stable hydrates (Beaudoin et al, 2004;Li et al, 2016). The commonly used depressurization and thermal/heating techniques shift local P-T conditions to the unstable side, whereas chemical stimulation depends on in situ alteration of the phase equilibrium boundary to induce gas hydrate dissolution Chong et al, 2016;. In this section, we briefly and systematically review research progress on hydrate deposit gas production techniques and their advantages and disadvantages.…”

Section: Gas Hydrate Production 221 Hydrate Production Techniques Amentioning

confidence: 99%

“…A summary of published studies shows that 82 countries have conducted research related to gas hydrate production (Chong et al, 2016). Based on the number of published works, Japan, China, the United States, South Korea, and India are at the top of the list.…”

Section: Gas Hydrate Production 221 Hydrate Production Techniques Amentioning

confidence: 99%

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Progress in Global Gas Hydrate Development and Production as a New Energy Resource

Liu

Sun

Zhang

et al. 2019

Acta Geologica Sinica (Eng)

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Natural gas hydrates have been hailed as a new and promising unconventional alternative energy, especially as fossil fuels approach depletion, energy consumption soars, and fossil fuel prices rise, owing to their extensive distribution, abundance, and high fuel efficiency. Gas hydrate reservoirs are similar to a storage cupboard in the global carbon cycle, containing most of the world's methane and accounting for a third of Earth's mobile organic carbon. We investigated gas hydrate stability zone burial depths from the viewpoint of conditions associated with stable existence of gas hydrates, such as temperature, pressure, and heat flow, based on related data collected by the global drilling programs. Hydrate-related areas are estimated using various biological, geochemical and geophysical tools. Based on a series of previous investigations, we cover the history and status of gas hydrate exploration in the USA, Japan, South Korea, India, Germany, the polar areas, and China. Then, we review the current techniques for hydrate exploration in a global scale. Additionally, we briefly review existing techniques for recovering methane from gas hydrates, including thermal stimulation, depressurization, chemical injection, and CH 4 -CO 2 exchange, as well as corresponding global field trials in Russia, Japan, United States, Canada and China. In particular, unlike diagenetic gas hydrates in coarse sandy sediments in Japan and gravel sediments in the United States and Canada, most gas hydrates in the northern South China Sea are non-diagenetic and exist in fine-grained sediments with a vein-like morphology. Therefore, especially in terms of the offshore production test in gas hydrate reservoirs in the Shenhu area in the north slope of the South China Sea, Chinese scientists have proposed two unprecedented techniques that have been verified during the field trials: solid fluidization and formation fluid extraction. Herein, we introduce the two production techniques, as well as the so-called "four-in-one" environmental monitoring system employed during the Shenhu production test. Methane is not currently commercially produced from gas hydrates anywhere in the world; therefore, the objective of field trials is to prove whether existing techniques could be applied as feasible and economic production methods for gas hydrates in deep-water sediments and permafrost zones. Before achieving commercial methane recovery from gas hydrates, it should be necessary to measure the geologic properties of gas hydrate reservoirs to optimize and improve existing production techniques. Herein, we propose horizontal wells, multilateral wells, and cluster wells improved by the vertical and individual wells applied during existing field trials. It is noteworthy that relatively pure gas hydrates occur in seafloor mounds, within near-surface sediments, and in gas migration conduits. Their extensive distribution, high saturation, and easy access mean that these types of gas hydrate may attract considerable attention from academia and industry in the f...

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Section: Gas Hydrates As a Potential Energy Resourcementioning

confidence: 87%

Section: Gas Hydrates As a Potential Energy Resourcementioning

confidence: 99%

Section: Gas Hydrate Production 221 Hydrate Production Techniques Amentioning

confidence: 99%

Section: Gas Hydrate Production 221 Hydrate Production Techniques Amentioning

confidence: 99%

See 2 more Smart Citations

Progress in Global Gas Hydrate Development and Production as a New Energy Resource

Liu

Sun

Zhang

et al. 2019

Acta Geologica Sinica (Eng)

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“…According to the reservoir conditions, there are four kinds of hydrate reservoirs in the nature, namely, class I, class II, class III, and class IV . In most of the studies related to hydrate exploitation, the characteristics of the natural gas hydrate sediment itself were ignored .…”

Section: Introductionmentioning

confidence: 99%

Application of X‐Ray Computed Tomography Technology in Gas Hydrate

Zheng

Tang

et al. 2019

Energy Tech

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Clathrate hydrates are formed by water molecules and natural gas molecules under a certain temperature and pressure. Natural gas hydrates are mainly distributed in the marine sediments and the permafrost in nature. As a kind of potential clean energy, determining the structural characteristics of hydrates in sediments is the prerequisite for the safe and economic exploitation of natural gas hydrate. X‐ray computed tomography (CT) is a potential method to nondestructively detect the occurrence of natural gas hydrate. The basic physical properties such as porosity, hydrate saturation, and sediment permeability of the hydrate‐bearing sediments are analyzed by calculating the CT numbers or combining with the network model. Therefore, the X‐ray CT is used to study the hydrates produced in the laboratory and the hydrates formed in the nature by scientists all over the world. By summarizing the previous research, this article focuses on the important role of X‐ray CT in the hydrate research from the following three aspects: analyzing the basic physical properties of hydrate sediment, identifying the occurrence mode of hydrate in sediments, and measuring the hydrate formation and decomposition process. In response to the research progress and future research directions, relevant suggestions had been put forward.

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