Review of unconventional hydrocarbon resources in major energy consuming countries and efforts in realizing natural gas hydrates as a future source of energy

Vedachalam, N.; Srinivasalu, S.; Rajendran, G.; Ramadass, G. A.

doi:10.1016/j.jngse.2015.06.008

Cited by 190 publications

(82 citation statements)

References 53 publications

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“…One cubic metre of methane hydrate (MH) contains 0.8 m 3 of water and 164 m 3 of methane gas at standard temperature and pressure (273.15 K and 1 atm) (Boswell and Collett, 2011;Makogon et al, 2007). NGHs have drawn enormous attention throughout the world as an alternative energy resource on account of the high energy capacity, the wide distribution, and the vast reserves (Collett et al, 2015;Vedachalam et al, 2015;Chong et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Numerical simulations for analyzing deformation characteristics of hydrate-bearing sediments during depressurization

Liu

Zhang

et al. 2017

Adv. Geo-Energ. Res.

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Natural gas hydrates have been treated as a potential energy resource for decades. Understanding geomechanical properties of hydrate-bearing porous media is an essential to protect the safety of individuals and devices during hydrate production. In this work, a numerical simulator named GrapeFloater is developed to study the deformation behavior of hydrate-bearing porous media during depressurization, and the numerical simulator couples multiple processes such as conductive-convective heat transfer, two-phase fluid flow, intrinsic kinetics of hydrate dissociation, and deformation of solid skeleton. Then, a depressurization experiment is carried out to validate the numerical simulator. A parameter sensitivity analysis is performed to discuss the deformation behavior of hydrate-bearing porous media as well as its effect on production responses. Conclusions are drawn as follows: the numerical simulator named GrapeFloater predicts the experimental results well; the modulus of hydrate-bearing porous media has an obvious effect on production responses; final deformation increases with decreasing outlet pressure; both the depressurization and the modulus decrease during hydrate dissociation contribute to the deformation of hydrate-bearing porous media.

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Section: Introductionmentioning

confidence: 99%

Numerical simulations for analyzing deformation characteristics of hydrate-bearing sediments during depressurization

Liu

Zhang

et al. 2017

Adv. Geo-Energ. Res.

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“…According to China's National Development and Reform Commission's shale gas development plan, shale gas production should be 6.5 billion cubic meters in 2015 and shall reach 60 to 100 billion cubic meters by 2020. To achieve this goal, 20,000 more shale wells need to be drilled, which requires a massive investment of 95 Billion USD [44]. In addition, shale gas development is facing high mining cost, large water consumption, water pollution and other issues.…”

Section: Potential Competitorsmentioning

confidence: 99%

Focus on the development of natural gas hydrate in China

Tan

Pan

Liu

2016

Preprint

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Natural gas hydrate, also known as combustible ice, and mainly composed of methane, is identified as a potential clean energy for the 21st century. Due to its large reserves, gas hydrate can ease problems caused by energy resource shortage and has gained attention around the world. In this paper, we focus on the exploration and development of gas hydrate as well as discussing its status and future development trend in China and abroad. We then analyze its opportunities and challenges in China from four aspects, resource, technology, economy and policy, with five forces model and Politics Economics Society Technology method. The results show China has abundance gas hydrate resource; however, backward technologies and inadequate investment have seriously hindered the future development of gas hydrate; thus, China should establish relevant cooperation framework and intuitional arrangement to attract more investment as well as breaking through technical difficulties to commercialization gas hydrate as soon as possible.

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“…The combination of horizontal drilling and hydraulic fracturing has provided access to large volumes of unconventional oil and gas, which were previously uneconomic to produce, 1,2 to the point that shale gas has become one of the most important energy resources for the United States. 3,4 The term shale play is used to describe a geographic area that contains an organicrich fine-grained sedimentary rock and exhibits low production rates.…”

Section: Introductionmentioning

confidence: 99%

A kinetic Monte Carlo approach to study fluid transport in pore networks

Apostolopoulou

Day

Hull

et al. 2017

The Journal of Chemical Physics

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The mechanism of fluid migration in porous networks continues to attract great interest. Darcy's law (phenomenological continuum theory), which is often used to describe macroscopically fluid flow through a porous material, is thought to fail in nano-channels. Transport through heterogeneous and anisotropic systems, characterized by a broad distribution of pores, occurs via a contribution of different transport mechanisms, all of which need to be accounted for. The situation is likely more complicated when immiscible fluid mixtures are present. To generalize the study of fluid transport through a porous network, we developed a stochastic kinetic Monte Carlo (KMC) model. In our lattice model, the pore network is represented as a set of connected finite volumes (voxels), and transport is simulated as a random walk of molecules, which "hop" from voxel to voxel. We simulated fluid transport along an effectively 1D pore and we compared the results to those expected by solving analytically the diffusion equation. The KMC model was then implemented to quantify the transport of methane through hydrated micropores, in which case atomistic molecular dynamic simulation results were reproduced. The model was then used to study flow through pore networks, where it was able to quantify the effect of the pore length and the effect of the network's connectivity. The results are consistent with experiments but also provide additional physical insights. Extension of the model will be useful to better understand fluid transport in shale rocks.

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Review of unconventional hydrocarbon resources in major energy consuming countries and efforts in realizing natural gas hydrates as a future source of energy

Cited by 190 publications

References 53 publications

Numerical simulations for analyzing deformation characteristics of hydrate-bearing sediments during depressurization

Numerical simulations for analyzing deformation characteristics of hydrate-bearing sediments during depressurization

Focus on the development of natural gas hydrate in China

A kinetic Monte Carlo approach to study fluid transport in pore networks

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