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Gas Migration Law and Precision Extraction in Close Distance Coal Seam Goaf: A Case Study
Gas disasters are more prominent in complex coal conditions, especially for the close distance coal seam mining that the gas control in the upper...
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Quantification of Gas Transport Behavior During Coalbed Methane Extraction in A Coal Seam Considering a Dual-Porosity/Single-Permeability Model
Due to the inherent deposition environment and extraction challenges in a coal seam, quantification of its gas transport behavior serves as the...
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Research on the evolution of the deviatoric stress and control of a gas extraction roadway under mining influence
Aiming at the considerable deformation of the surrounding rock and the difficulty of supporting a roadway affected by the mining of close-distance...
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Effect of damage zone around borehole on carbon dioxide injection promoted gas extraction in soft and low-permeability coal seam
Injecting external CO 2 into soft and low-permeability coal seams can improve CH 4 extacctinn efficiency, and also benefit in CO 2 sequestration....
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Gas Extraction Mechanism and Effect of Ultra-High-Pressure Hydraulic Slotting Technology: a Case Study in Renlou Coal Mine
Ultra-high-pressure hydraulic slotting technology is an effective method to realize pressure relief and permeability enhancement of a single coal...
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The GAs Extraction and Analyses system (GAEA) for immediate extraction and measurements of volatiles in the Hayabusa2 sample container
Hayabusa2 returned surface samples from the C-type near-Earth asteroid (162173) Ryugu to Woomera, South Australia, in December 2020. The samples...
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Unconventional Shale Gas Exploration and Exploitation Current Trends in Shale Gas Exploitation
From the geological mysteries of shale formations to cutting-edge techniques in gas extraction, this book unveils the essential knowledge to harness...
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Research on the layout optimization and utilization of floor gas extraction roadway: a case study in Shoushan No.1 Coal Mine, China
Gas extraction with the crossing boreholes of the floor rock roadway is an important method to prevent accidents of coal and gas outbursts. The...
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Isotope geochemical features and layered quantitative method of coal seam group gas combined extraction
In view of the problem that it is difficult to measure the gas extraction of each coal seam alone by traditional device in the process of coal seam...
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Research and engineering practice of high-efficiency gas extraction technology by hydraulic fracturing: a case study of Huanglong Coalfield in China
In view of the problems of rapid attenuation of concentration and flow rate and the small extraction influence radius in the process of gas...
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Quantitative Assessment of Coal Seam Permeability Improvement Around an Enlarged Borehole in Gas Extraction Engineering: A Method for Field Application
AbstractUnderstanding the permeability distribution is an important basis for the design of hydraulic strengthened gas extraction. However, the...
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A New Method for Determining the Sealing Depth of Extraction Borehole Based on the Constant-Pressure Gas Injection and its Applications
Coalbed methane is a risk of coal mining safety while being an important energy source, and gas extraction is the most effective treatment method....
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Exploration of Dynamic Analysis Technology to Oil-Type Underground Gas Storage - A Case Study of NanPu No.1 Gas Storage
At present, Most in-service underground gas storage are gas reservoir. Nanpu No.1 is the first gas storage reservoir in Jidong Oilfield, which...
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Physical Modelling Programs of Rock Deformation and Fracture in the Near-Wellbore Zone of USG During Gas Injection and Extraction
It was noted above that during the operation of UGS, the stresses acting in the vicinity of wells are affected by two factors caused by gas injection...
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Greenhouse Gas Emissions from Peat Extraction in the Center of the European Part of Russia
AbstractThe carbon dioxide (CO 2 ), methane (CH 4 ), and nitrous oxide (N 2 O) fluxes measured at a peat extraction site in the Moscow region in different...
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Micro–Macro Behavior of CBM Extraction in Multi-well Mining Projects
Multi-well extraction is a prevalent technique in coalbed methane (CBM) recovery projects. Although numerous studies have extensively explored...
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Shallow Gas Disasters
Shallow gas is generally referred to in the seabed below 1000 m of gas accumulation in the sediments. The components of shallow gas have simple...
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Geopolitics of Shale Gas
This chapter will provide an acknowledgement of processes, concern regarding them, and geopolitics behind the exploitation of shale gas across the...
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Evolution of Permeability and Gas Seepage in Deep Coal Under 3D Stress
More and more gas extraction in deep coal seam is conducted under extreme geological conditions. The coal permeability determines the efficiency of...
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Results of Physical Modelling of Deformation and Filtration Processes in the Bottomhole Zone of UGS Wells During Gas Extraction and Injection
Physical modelling of deformation and filtration processes in the BHZ under the influence of alternating pressures due to depressions and repressions...