Study on gas migration law and influencing factors of gas drainage

Wang, Yi; Zhao, Chenguang; Wu, Bing

doi:10.1504/ijogct.2022.126831

Cited by 2 publications

(1 citation statement)

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“…Thus, the solution of the problem of optimal nature management requires the study of systemic relationships of substances in different aggregate states. The construction of the corresponding matrices requires an integrated approach in the "impact-response" system [22,23]. Then, the existing developments, covering all types of impacts, should be a scientific and practical foundation in this system [24].…”

Section: Discussion Of Resultsmentioning

confidence: 99%

Scientific and technical fundamentals of changing the properties of hydrocarbons in conditions of optimal subsoil use

Metaksa,

Alisheva,

Metaksa

et al. 2023

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Section: Discussion Of Resultsmentioning

confidence: 99%

Scientific and technical fundamentals of changing the properties of hydrocarbons in conditions of optimal subsoil use

Metaksa,

Alisheva,

Metaksa

et al. 2023

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Response Surface Analysis on Multiple Parameter Effects on Borehole Gas Extraction Efficiency

Cheng,

Xiao

et al. 2024

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To explore the impact of different factors on the effectiveness of borehole gas extraction, in situ stress tests were conducted in a test mining area. A theoretical model of gas migration within the coal matrix–fracture system was established. Based on field data, a numerical model was constructed to study the variation patterns of the effective extraction radius under different extraction conditions. Using the response surface methodology, the interactions of different factors and their impact on the effective extraction radius were analyzed, resulting in a response surface model for each factor and the effective extraction radius. The results indicate that the initial permeability of the coal seam has the greatest impact on the extraction radius, with a maximum range of 2.027 m. The influence of extraction time, extraction negative pressure, and borehole diameter decreases sequentially. The borehole diameter has the least impact, with a range of 0.608 m. The response surface model has good significance, with a coefficient of determination (R2) of 0.9957, and it can explain over 99.57% of the response values. The response surface between the initial permeability of the coal seam and extraction time shows the greatest degree of distortion, indicating a significant interaction effect on the extraction radius. In contrast, the response surface between extraction time and extraction negative pressure shows the least degree of distortion, indicating that their interaction effect is the least significant. These findings can provide a theoretical reference for improving borehole design and enhancing gas extraction efficiency.

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Study on gas migration law and influencing factors of gas drainage

Cited by 2 publications

References 0 publications

Scientific and technical fundamentals of changing the properties of hydrocarbons in conditions of optimal subsoil use

Scientific and technical fundamentals of changing the properties of hydrocarbons in conditions of optimal subsoil use

Response Surface Analysis on Multiple Parameter Effects on Borehole Gas Extraction Efficiency

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