Results 71 to 80 of about 24,090 (252)

Economic evaluation and investment decision-making process of deep coalbed methane exploration and development projects

open access: yesMeitan kexue jishu
Deep coalbed methane is a high-quality natural gas resource that has seen rapid exploration and development progress in recent years and holds an extremely promising future.
Youjin DAI   +9 more
doaj   +1 more source

Peculiarities of geological and thermobaric conditions for the gas hydrate deposits occurence in the Black Sea and the prospects for their development [PDF]

open access: yes, 2019
The actuality has been revealed of the necessity to attract the gas hydrate deposits of the Black Sea into industrial development as an alternative to traditional gas fields.
Bondarenko, V., Petlovanyi, M., Sai, K.
core  

Gas Diffusion Coefficient in Tight Sandstones: An Experimental Approach Under Various Controlling Factors

open access: yesGeofluids, Volume 2026, Issue 1, 2026.
This study investigates the natural gas diffusion coefficients in tight sandstones, emphasizing the Sulige area′s geological conditions. Through experimental measurements and the simulation of natural gas diffusion processes, we explore the impact of various geological factors—including temperature, pressure, porosity, permeability, pore throat radius,
Zhongying Zhao   +4 more
wiley   +1 more source

CONSTRAINING THE MEAN RESIDENCE TIME AND FLOWPATH OF GROUNDWATER THROUGH COAL SEAMS USING NOBLE GASES [PDF]

open access: yes, 2018
Noble gases, specifically 4He concentrations, can be a useful tool for determining the rates of groundwater recharge, subsurface residence times, and groundwater flowpaths, especially in difficult to model complex formations such as fractured aquifers ...
Darland, Samuel
core  

Study on the characteristics of gas permeability of coal under loaded stress [PDF]

open access: yes, 2017
The #3 coal seam of Jinsheng Rundong Ltd. of Jin-Coal Group in Shanxi Province, China, has high gas content and pressure; however, it has a low gas permeability, which can easily cause gas enrichment and may cause accidents of coal and gas outbursts.
Li, Dengke   +4 more
core   +1 more source

Experimental Study on Multiscale Evolution Mechanism of Coalbed Reservoir Properties in “Three‐Low” CBM Reservoirs Modified by Chlorine Dioxide

open access: yesGeofluids, Volume 2026, Issue 1, 2026.
Aiming at the “three‐low” challenges (low permeability, low gas saturation, and low critical desorption‐to‐storage ratio [CDSR]) of Chinese coalbed methane (CBM) reservoir materials, this study adopted chlorine dioxide (ClO2) chemical modification on long‐flame, coking, and anthracite coal materials.
Chaowen Hu   +7 more
wiley   +1 more source

Mechanism of cement sheath sealing degradation in multistage fracturing of deep coalbed methane

open access: yesMeitan xuebao
Under multistage fracturing conditions for deep coalbed methane, the cement sheath of the upper fracturing section is subjected to a complex loading environment.
Jiang XIN   +7 more
doaj   +1 more source

Analysis of Gas Migration Characteristics and Controlling Factors in Nanopores of Deep Coal Seams

open access: yesGeofluids, Volume 2026, Issue 1, 2026.
Nanopores of various scales and morphologies in coal are important spaces for gas storage and migration. To deeply analyse the initial gas migration scale and characteristics in coal matrix micropores, this paper constructs an apparent permeability model describing the gas migration scale based on the gas transport mechanism, and analyses the ...
Ji Xiaofeng   +5 more
wiley   +1 more source

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