Mechanism of gas-water flow at pore-level in aquifer gas storage

Shi, Lei; Wang, Jieming; Liao, Guang‐zhi; Xiong, Wei; Gao, Shusheng

doi:10.1007/s11771-013-1888-x

Cited by 8 publications

(3 citation statements)

References 16 publications

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“…The storage volume increases with the increase in the injection pressure [741]. Further, the storage capacity is affected by the distribution of pore and throat in the reservoir and water lock [742]. Moreover, the salt precipitation in the porous medium reduces the injectivity and induces damage [743].…”

Section: Natural Gasmentioning

confidence: 99%

Green Synthetic Fuels: Renewable Routes for the Conversion of Non-Fossil Feedstocks into Gaseous Fuels and Their End Uses

et al. 2020

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Innovative renewable routes are potentially able to sustain the transition to a decarbonized energy economy. Green synthetic fuels, including hydrogen and natural gas, are considered viable alternatives to fossil fuels. Indeed, they play a fundamental role in those sectors that are difficult to electrify (e.g., road mobility or high-heat industrial processes), are capable of mitigating problems related to flexibility and instantaneous balance of the electric grid, are suitable for large-size and long-term storage and can be transported through the gas network. This article is an overview of the overall supply chain, including production, transport, storage and end uses. Available fuel conversion technologies use renewable energy for the catalytic conversion of non-fossil feedstocks into hydrogen and syngas. We will show how relevant technologies involve thermochemical, electrochemical and photochemical processes. The syngas quality can be improved by catalytic CO and CO2 methanation reactions for the generation of synthetic natural gas. Finally, the produced gaseous fuels could follow several pathways for transport and lead to different final uses. Therefore, storage alternatives and gas interchangeability requirements for the safe injection of green fuels in the natural gas network and fuel cells are outlined. Nevertheless, the effects of gas quality on combustion emissions and safety are considered.

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Section: Natural Gasmentioning

confidence: 99%

Green Synthetic Fuels: Renewable Routes for the Conversion of Non-Fossil Feedstocks into Gaseous Fuels and Their End Uses

et al. 2020

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“…In fact, the relative permeability changes with the displacement fluid and the cycle, and the relative permeability curve has a lag phenomenon between different saturation cycles. The irreversibility or path dependence of the physical properties is called "hysteresis", so when observed in the relative permeability data, it is called "phase permeability hysteresis", and the degree of this irreversibility depends on the fluid type [5][6][7], pore structure [8], and wettability [5,9].…”

Section: Introductionmentioning

confidence: 99%

State of the Art on Relative Permeability Hysteresis in Porous Media: Petroleum Engineering Application

Lan,

Guo,

Liu

et al. 2024

Applied Sciences

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This paper delivers an examination of relative permeability hysteresis in porous media in the field of petroleum engineering, encompassing mathematical modeling, experimental studies, and their practical implications. It explores two-phase and three-phase models, elucidating the generation of scanning curves and their applications in various porous materials. Building on the research of traditional relative permeability hysteresis models, we have incorporated literature on forward calculations of relative permeability based on digital rock core models. This offers a new perspective for studying the hysteresis effect in relative permeability. Additionally, it compiles insights from direct relative permeability and flow-through experiments, accentuating the methodologies and key findings. With a focus on enhanced oil recovery (EOR), carbon capture, utilization and sequestration (CCUS), and hydrogen storage applications, the paper identifies existing research voids and proposes avenues for future inquiry, laying the groundwork for advancing recovery techniques in oil and gas sectors.

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“…Many scholars have conducted experiments and numerical simulations of multi‐cycle gas‐water displacement. Shi et al 37 observed the gas‐water flow in an etched glass micromodel and found that the irreducible water saturation and residual gas saturation increased with increasing cycle time. Amiell et al 38 investigated the unsteady displacement phenomena in‐water displacement and found that the cores weakened after multiple cycles of gas‐water displacement.…”

Section: Introductionmentioning

confidence: 99%

Study on multi‐cycle gas‐water displacing mechanism in underground gas storage of low‐permeability reservoir based on PNM

Song,

Wang,

Pei

et al. 2024

Energy Storage

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A deep understanding of the pore‐scale multi‐cycle two‐phase seepage mechanism of gas‐water systems in low‐permeability reservoirs is crucial for enhancing oil and gas recovery and optimizing the operating conditions of underground gas storage. A pore network model was reconstructed using micro‐CT images of low‐permeability core samples from the Dagang Oilfield, China. The mathematical models of gas‐water flow in the pore‐scale models were established based on Poiseuille's law and the quasi‐static displacement theory, considering the gas compressibility and slip effects. The porosity, pore size, absolute permeability, and relative permeability (Kr) of oil‐water and gas‐water were calculated using pore network simulations and validated against experimental benchmark data of the same samples. The effects of multi‐cycle displacement, rock wettability, and average pore pressure on the gas‐water two‐phase flow were simulated and analyzed. The results showed that the relative permeability of gas (Krg) at the same water saturation level significantly increased when the gas compressibility and slip effects were considered. With an increase in the number of gas‐water displacement cycles, Krg at the same water saturation level showed a decreasing trend, indicating a reduction in the gas seepage capability. Krg decreased with increasing water contact angle. With an increase in the average pore pressure, Krg decreased and gradually increased when the average pressure exceeded 25 MPa.

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Mechanism of gas-water flow at pore-level in aquifer gas storage

Cited by 8 publications

References 16 publications

Green Synthetic Fuels: Renewable Routes for the Conversion of Non-Fossil Feedstocks into Gaseous Fuels and Their End Uses

Green Synthetic Fuels: Renewable Routes for the Conversion of Non-Fossil Feedstocks into Gaseous Fuels and Their End Uses

State of the Art on Relative Permeability Hysteresis in Porous Media: Petroleum Engineering Application

Study on multi‐cycle gas‐water displacing mechanism in underground gas storage of low‐permeability reservoir based on PNM

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