Life-cycle energy, cost, and CO2 emission of CO2-enhanced coalbed methane (ECBM) recovery framework

Cho, Seolhee; Kim, Sung Hoon; Kim, Jiyong

doi:10.1016/j.jngse.2019.102953

Cited by 28 publications

(8 citation statements)

References 34 publications

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“…RBR is effective in outputting the events which are expected in advance and accord with the hypothesis of rules. The solution output module is the core of the diet engine expert system, which is also the focus of this study (Cho et al 2019 ). The reasoning method adopted by the system is an uncertain reasoning method based on weighted fuzzy logic, which is suitable for representing the uncertainty of engine prescription knowledge.…”

Section: Discussionmentioning

confidence: 99%

RETRACTED ARTICLE: Groundwater vulnerability based on bee colony optimization and real-time monitoring of exercise weight loss effect

Zou

2021

Arab J Geosci

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In fact, the groundwater pollution caused by the acceleration of industrialization and rapid population growth is an important constraint to sustainable development. Taking L area as an example, this paper finds out the differences of groundwater vulnerability in this area and plans the groundwater vulnerability classification. For China’s groundwater protection work, it is very important for the management departments at all levels in each L area to provide development technology support for enterprises. Based on the concept of groundwater quality vulnerability and groundwater vulnerability assessment method in Japan, according to the actual situation of the study area, this paper analyzes the vulnerability of natural geography, meteorology and hydrology, geological conditions, and human activities in the area. This paper establishes an optimized and improved DRASTIC model and adds the evaluation factors affecting human activities into the evaluation conditions of traditional DRASTIC model, that is, the current land use status and groundwater exploitation. By combining bee colony optimization with groundwater vulnerability assessment model, groundwater vulnerability assessment is carried out. This paper also uses the special computer system to simulate the decision-making process of medical staff, provides obesity intelligence diagnosis and personalized prescription exercise, carries out exercise weight loss monitoring for obese teenagers, helps teenagers to achieve healthy exercise and diet, and provides scientific guidance for fitness guidance of Chinese diet youth. The system adopts the methods of artificial intelligence and software development, diagnoses obesity through youth physique test, provides personalized exercise prescription through special system, monitors diet work in real time, and provides timely feedback. In this paper, the vulnerability of groundwater quality and exercise weight loss effect of real-time monitoring are studied and applied to bee colony optimization to promote its development.

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Section: Discussionmentioning

confidence: 99%

RETRACTED ARTICLE: Groundwater vulnerability based on bee colony optimization and real-time monitoring of exercise weight loss effect

Zou

2021

Arab J Geosci

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“…Coal seams have been broadly recognized as one of the target formations for geological sequestration of carbon dioxide (CO 2 ) due to their large volume and often collocation with cluster of large, industrial scale, point-source emissions (Masum et al, 2022;Vangkilde-Pedersen et al, 2009). In addition, injection of CO 2 has the potential of enhancing coalbed methane recovery concurrently, which can be used for energy supply and offsetting CO 2 sequestration costs (Cho et al, 2019;Omotilewa et al, 2021). CO 2 sequestration and coalbed methane recovery are complex flow problems and associated with unique structure of coal seams.…”

Section: Introductionmentioning

confidence: 99%

Three-dimensional cleat scale modelling of gas transport processes in deformable fractured coal reservoirs

Chen¹,

Masum²,

Thomas³

2023

Gas Science and Engineering

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“…The inadequate diffusion and low content of free gas in matrix pores result in a coalbed methane recovery rate of <50%, based solely on the natural pressure of the coal seam . The injection of enhanced coalbed methane (ECBM) has garnered attention due to its potential to achieve methane recovery rates as high as 90%. , Carbon dioxide (CO 2 ) is commonly employed as the injected gas, as its strong affinity with the coal pores facilitates the displacement of CH 4 , thereby enhancing coalbed methane recovery efficiency. − Simultaneously, this technique is expected to contribute to the promotion of coalbed methane recovery and greenhouse gas emission reduction. − …”

Section: Introductionmentioning

confidence: 99%

Reviews on Simulation Studies of Coalbed Gas Recovery and Transport Processes

Wang,

Lin,

Zhao

2023

Energy Fuels

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Coal and shale contain enormous natural gas resources. The reservoir structures are complex, with an extensive distribution of micropores and nanopores, leading to intricate gas transport mechanisms. Simulation methods play a crucial role in unraveling the complex transport phenomena associated with coal-bed methane and shale gas. This Review examines the recent advances in simulating gas transport in porous media for predicting gas migration. It discusses the fundamental theories of gas transport in nanoscale pores, encompassing the gas transport mechanisms in porous media and the fundamental equations involved in the simulation methods. Furthermore, a review is provided on the molecular dynamics (MD) and lattice Boltzmann methods. Emphasis is placed on the methods of pore reconstruction, including pore volume, pore size, and pore shape, and their application in diffusion and transport. The advantages and limitations of these two simulation modeling methods are also discussed. The application of various coupled methods in the study of gas transport in porous media is explored, with a key focus on appropriately handling scale translations in flow modeling. This work enhances the understanding of coalbed gas transport and dispersion behavior by summarizing simulation methods for coalbed gas and shale gas transport. Coal reservoirs, compared to shale, exhibit different gas pressures and organic compositions. Hence, the gas transport mechanisms in coal nanopores are still not fully understood. Further research and analysis are needed to investigate how shale gas models can be applied to coalbed gas.

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Life-cycle energy, cost, and CO2 emission of CO2-enhanced coalbed methane (ECBM) recovery framework

Cited by 28 publications

References 34 publications

RETRACTED ARTICLE: Groundwater vulnerability based on bee colony optimization and real-time monitoring of exercise weight loss effect

RETRACTED ARTICLE: Groundwater vulnerability based on bee colony optimization and real-time monitoring of exercise weight loss effect

Three-dimensional cleat scale modelling of gas transport processes in deformable fractured coal reservoirs

Reviews on Simulation Studies of Coalbed Gas Recovery and Transport Processes

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