Advances in research and developments on natural gas hydrate extraction with gas exchange

Gajanan, K.; Ranjith, P.G.; Yang, S.Q.; Xu, T.

doi:10.1016/j.rser.2023.114045

Cited by 22 publications

(6 citation statements)

References 117 publications

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“…Natural gas hydrates are crystals of water and natural gas, primarily methane, and the detected reserves are widely distributed [ 3 , 4 ] in marine sediments and permafrost on Qingdao Plateau along the Sichuan-Tibet Railway [ 5 ]. The wetland structure in the gas hydrate-rich region of the Tibetan Plateau has also been anthropogenically damaged by the gas hydrate exploration activities that have recently taken place in China’s onshore area [ 6 , 7 , 8 , 9 ]. The microstructure and elastic properties of the rocks [ 10 , 11 , 12 , 13 , 14 ] in sedimentary strata are altered by the presence of gas hydrates.…”

Section: Introductionmentioning

confidence: 99%

A State-Dependent Elasto-Plastic Model for Hydrate-Bearing Cemented Sand Considering Damage and Cementation Effects

Tong,

Chen,

et al. 2024

Materials

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In order to optimize the efficiency and safety of gas hydrate extraction, it is essential to develop a credible constitutive model for sands containing hydrates. A model incorporating both cementation and damage was constructed to describe the behavior of hydrate-bearing cemented sand. This model is based on the critical state theory and builds upon previous studies. The damage factor Ds is incorporated to consider soil degradation and the reduction in hydrate cementation, as described by plastic shear strain. A computer program was developed to simulate the mechanisms of cementation and damage evolution, as well as the stress-strain curves of hydrate-bearing cemented sand. The results indicate that the model replicates the mechanical behavior of soil cementation and soil deterioration caused by impairment well. By comparing the theoretical curves with the experimental data, the compliance of the model was calculated to be more than 90 percent. The new state-dependent elasto-plastic constitutive model based on cementation and damage of hydrate-bearing cemented sand could provide vital guidance for the construction of deep-buried tunnels, extraction of hydrocarbon compounds, and development of resources.

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Section: Introductionmentioning

confidence: 99%

A State-Dependent Elasto-Plastic Model for Hydrate-Bearing Cemented Sand Considering Damage and Cementation Effects

Tong,

Chen,

et al. 2024

Materials

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“…Natural gas hydrate is typically distributed in marine sediments and permafrost regions and is expected to become a significant successor to natural gas. Therefore, realizing the commercial development of natural gas hydrate sediments possesses significance in ensuring a sustainable energy supply. − Many countries, such as the United States, Japan, China, and so on, have successfully carried out trial production of natural gas hydrate deposits at the moment. − However, the phenomena of low productivity, sanding, unsustainable production, and high development cost have been encountered during trial tests. , Due to the vast cost, it is impossible to figure out the production behavior of natural gas hydrate deposits in detail just through a pilot test by depressurization, − thermal stimulation, − inhibitor injection, − CO 2 replacement − and the joint development technology. − It is an alternative approach to authentically reshape hydrate-bearing sediments and unravel the production characteristics through indoor experiments.…”

Section: Introductionmentioning

confidence: 99%

Large-Scale Experimental Investigation on the Production Characteristics of Marine Hydrate-Bearing Sediments

Pang,

Li,

Zhou

et al. 2024

Energy Fuels

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A self-developed large-scale 3D platform with a maximal volume of 1695 L and pressure of 30 MPa was employed to investigate the production behavior of hydrate-bearing sediment using depressurization and thermal stimulation technology. Moreover, a novel method involving the joint development of hydrate-bearing sediments and shallow gas was first carried out based on the established apparatus. Experimental results show that the temperature in the reactor exhibits a decreasing trend as a whole with the continuous heat adsorption of hydrate dissociation due to slow heat transfer in the large-scale device. Heat transfer is the main factor controlling the gas production rate in the whole process of depressurization. The temperature of the reactor almost approaches the equilibrium point corresponding to the internal pressure, and the hydrate keeps dissociating near the phase equilibrium curve. Meanwhile, local overpressure is first observed during depressurization, indicating that dissociated gas from hydrate cannot be fully released while some are trapped in the deposits. In addition, thermal stimulation may not be applicable for field-scale marine natural gas hydrate development owing to the large heat loss in the pipelines and the low heat transfer in the sediments. Investigation of the joint development of hydrate-bearing deposits and shallow gas indicates that hydrate hardly dissociates initially at the large production rate of shallow gas and starts to decompose gradually with the decreased value, showing strong interlayer interaction between hydrate layers and shallow gas. Therefore, it is necessary to reasonably allocate the production rate of different reservoirs at different depths to achieve the most economical development during the coproduction of multigas. Compared with that in small-scale experiments, the production behavior in the large-scale experimental apparatus is closer to fieldscale development. Moreover, the first large-scale experimental investigation on the joint development of hydrate-bearing sediments and shallow gas provides novel insight for efficiently developing natural gas hydrate reservoirs.

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“…16−19 Moreover, studies suggest that CO 2 -based gaseous mixtures provide auxiliary protection to MH layers by enhancing the geomechanical integrity of hydrate-bearing sediments. 20 Besides, injection of flue gas (CO 2 + N 2 ) emitted from power plants to extract CH 4 from hydrates mitigates the separation and purification cost of CO 2 and increases the CH 4 recovery efficiency as N 2 gas molecules tend to replace CH 4 gas molecules residing in small (5 12 ) hydrate cages. 21 Now, approximately 99% of the MH reservoir sites are in continental margins under the deep sea, where these hydrates occupy internal and interstitial pore spaces of the distributed marine sediments.…”

Section: Introductionmentioning

confidence: 99%

A Deparameterized Clathrate Phase Description Using Crystallography Theory: Validating Guest-Swapping Dynamics in a Gas Hydrate

Sharma,

Jana

2024

Energy Fuels

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Advances in research and developments on natural gas hydrate extraction with gas exchange

Cited by 22 publications

References 117 publications

A State-Dependent Elasto-Plastic Model for Hydrate-Bearing Cemented Sand Considering Damage and Cementation Effects

A State-Dependent Elasto-Plastic Model for Hydrate-Bearing Cemented Sand Considering Damage and Cementation Effects

Large-Scale Experimental Investigation on the Production Characteristics of Marine Hydrate-Bearing Sediments

A Deparameterized Clathrate Phase Description Using Crystallography Theory: Validating Guest-Swapping Dynamics in a Gas Hydrate

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