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China Geology
Scopus
ISSN 2096-5192 · KeAi Communications Co., Ltd. · 583 artikel di indeks
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Artikel Jurnal
Geological structure controls CO2 hydrate sequestration in seafloor sediments: A numerical simulation study of anticline, syncline, and inclined reservoirs
Sequestration of CO2 as hydrates in seafloor sediments is an effective method for reducing CO2 emissions. However, the efficiency of CO2 hydrate sequestration can be influenced by the geological structure of seafloor reservoirs. To address this, the authors numerically investigate the effects of…
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Artikel Jurnal
Fluid invasion-induced geological risks during drilling in marine natural gas hydrate reservoirs: A mini review
Geological risks are the main obstacles encountered during drilling in marine natural gas hydrate reservoirs. This review aims to provide a primary insight into the geological risks in the process of drilling in marine hydrate reservoirs. Different geological risks and their characteristics will be…
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Artikel Jurnal
Effect of reservoir goaf on methane recovery and carbon dioxide sequestration in sandy and clayey hydrate reservoirs: An experimental study
Carbon dioxide (CO2) replacement is a promising technique for extracting natural gas hydrate (NGH, a promising clean energy source), capable of promoting energy development while mitigating the greenhouse effect. However, the improvement of NGH extraction efficiency in field engineering is hindered…
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Artikel Jurnal
Influence of salinity and electrostatic fields on CO2 hydrate formation and the interfacial quasi-liquid layer in clay nanoconfinement: A molecular dynamics study
Marine clay reservoirs are considered ideal substrates for hydrate-based CO2 capture and storage owing to their large specific surface area, high porosity and favorable adsorption capacity. Understanding the evolution mechanism of quasi-liquid layers (QLLs) and hydrate formation at clay interfaces…
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Artikel Jurnal
Multi-gas co-production from deep-water shallow hydrates and underlying free gas: A numerical study of coupled production dynamics and secondary hydrate formation
The co-occurrence of marine gas hydrates, shallow gas, and deep oil and gas has been widely recognized, offering favorable conditions for integrated resource development. This study aims to explore the coupled production dynamics of shallow gas hydrates and underlying free gas to support the…
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Artikel Jurnal
A thermoresponsive temporary plugging agent for drilling fluids in marine gas hydrate reservoirs: Synthesis, performance, and reversible plugging mechanism
During drilling in marine gas hydrate reservoirs, drilling-fluid invasion can induce hydrate dissociation, wellbore instability, and reservoir damage, thereby compromising drilling safety and reservoir protection. To address the low-temperature agglomeration and limited self-unplugging capability…
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Artikel Jurnal
Impact of environmental variables on hydrate formation kinetics in porous media systems and their contribution to CO2 capture and storage
Global dependence on fossil fuels has led to escalating atmospheric carbon dioxide emissions. The consecutive greenhouse effect poses a serious threat to the human habitat, rendering carbon dioxide abatement a key focus in contemporary research. Hydrate-based CO2 sequestration offers a promising…
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Artikel Jurnal
Permeability evolution and model of methane hydrate-bearing sediments under coupled shear strain, effective confining pressure, and hydrate saturation
The permeability of methane hydrate-bearing sediments (MHBS) is a key parameter for evaluating reservoir exploitation potential and formulating efficient production strategies. In actual field development, MHBS exists in a complex environment characterized by stress-seepage coupling. Research on…
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Artikel Jurnal
Temperature-driven hydrate dissociation in pressure-preserved coring: A fully coupled modeling study with burst-decay kinetics
Natural gas hydrate (NGH) extreme thermodynamic sensitivity poses challenges for pressure-preserved coring operations in reservoir evaluation and commercial development. Current preservation strategies employing “pressure-only” approaches fail to address temperature-induced instability, leading to…
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Artikel Jurnal
Gas sources of marine gas hydrate systems and the critical role of fluid migration pathways in gas hydrate formation
Gas hydrate systems contain large quantities of methane that may originate from biogenic, thermogenic, or mixed sources. Fluid migration pathways, including gas chimneys, faults, inclined permeable strata and diapirs, are critical for transporting thermogenic gases at depth into gas hydrate systems…
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Artikel Jurnal
Machine learning supervised algorithms for gas hydrate identification and saturation estimation in marine reservoirs using well log data: A case study of NGHP-01-19B
Gas hydrates are increasingly recognized as a significant unconventional energy resource and a key factor in marine geohazards and the global carbon cycle. However, accurately identifying and quantifying hydrate-bearing formations remains challenging due to complex geophysical signatures and…
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Artikel Jurnal
Deep learning framework with hybrid loss function for seismic velocity inversion of natural gas hydrate reservoirs
Natural gas hydrate (NGH) has attracted increasing attention as a promising unconventional energy resource owing to its high volumetric storage capacity, yet its development is accompanied by significant greenhouse gas risks. Therefore, accurate reservoir characterization is vital for marine…
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Artikel Jurnal
Cenozoic fault system and its control on gas hydrate accumulation in the eastern Dongsha Island area, northern South China Sea: Insights from high-resolution 3D seismic data
The enrichment and accumulation of natural gas hydrates depend on sufficient gas supply and effective migration pathways. The upward migration of deep thermogenic gases through fault systems is critical for seepage-type hydrate formation. This study aims to elucidate the developmental…
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Artikel Jurnal
Dynamic accumulation of gas hydrates in the Shenhu area, northern South China Sea: A two-stage evolution model constrained by temporally varying fluid flow
Gas hydrates occurring within the Pleistocene sediments of the Shenhu area, South China Sea, represent a dynamically evolving accumulation inherited from an “ancient” hydrate system. A hydrate-enriched layer with a maximum saturation of 48% is present near the base of the current gas-hydrate…
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Artikel Jurnal
Upper boundary variation of the gas hydrate stability zone in the Sea of Okhotsk: Error assessment and climate change scenarios based on 131286 oceanographic stations (1929–2020)
Gas hydrate (GH) dissociation and its interaction with global warming represent a critical yet poorly constrained climate feedback. This study aims to quantify the instrumental and methodological errors in estimating the upper boundary of the gas hydrate stability zone (GHSZ) in the Sea of Okhotsk…
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Artikel Jurnal
Machine learning-based analysis of factors controlling the reservoir productivity of the Maokou Formation, Sichuan Basin
By 2024, the proven natural gas reserves of the Maokou Formation in the central Sichuan Basin had exceeded 1.5×1011 m3, suggesting great potential for hydrocarbon exploration. However, this formation exhibits small reservoir thicknesses and pronounced lateral heterogeneity due to sedimentation and…