Measuring formation pressures and the degree of gas drainage in a large coalbed gas drainage field [PDF]
"The Bureau of Mines and United States Steel Corp. are conducting a joint project to monitor formation pressures at a large (23-well) coalbed gas drainage field near Oak Grove, Alabama.
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Drainage gas recovery technology for high-sulfur gas wells by a canned ESP system [PDF]
, 2018 In order to apply the electric submersible pump (ESP) based drainage gas recovery technology commonly used in conventional gas wells to high-sulfur gas wells, and meet the requirements of casing protection in high-sulfur gas wells, we conducted a series ...
Changqing Ye +7 more
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Experimental Study on the Gas Flow Characteristics and Pressure Relief Gas Drainage Effect under Different Unloading Stress Paths [PDF]
, 2020 Coal seam gas is a critical substance because it can be a source of a large quantity of clean energy as well as a dangerous source of risk. A pressure relief gas drainage is an effective and widely used method for coal seam gas recovery and gas disaster ...
Enyuan Wang +3 more
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Phase Engineering of Nanomaterials (PEN): Evolution, Current Challenges, and Future Opportunities
Advanced Materials, EarlyView.This review summarizes the synthesis, phase transition, advanced characterization spanning ex situ to in situ and operando techniques, and diverse applications of phase engineering of nanomaterials (PEN). It further outlines key challenges and future opportunities, such as phase stability, architecture control, and artificial intelligence (AI)‐driven ...
Ye Chen +7 more
wiley +1 more source
Study on evaporation drainage of deep coal seam gas wells [PDF]
Targeting the problem of a small amount of fluid accumulation in deep coal seam gas (CSG) wells during flowing production stage, the evaporation drainage method is proposed to discharge the liquid accumulation.
Hao Hu +5 more
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Optimization of coiled-tubing drainage gas recovery technology in tight gas field [PDF]
, 2017 © The Author(s) 2017. cc-byIn this study, research progress on critical liquid-carrying theory was introduced and its applicable conditions were presented and analyzed.
Yinghao Shen +11 more
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Meitan xuebao, 2023 The instability and collapse of drainage boreholes is one of the key problems that hinder the efficient extraction of coal-bed methane (CBM). In order to solve the problem of instability and collapse of extraction boreholes in soft coal seams, based on the laboratory tests and theoretical analysis of variable mass flow pressure drop, a coupled ...
Xuebo ZHANG +4 more
openaire +1 more source
Intrinsically Stretchable Piezoelectric Nanocomposites for Artificial Ultrasonic Sensory Synapse
Advanced Materials, EarlyView.Applying ultrasonic stimulations to a soft‐stretchable underwater piezoelectric sensor based on the soft‐stretchable nanocomposite from the thermal cross‐linking between the ─C─F group of P(VDF‐TrFE) and the ─NH2 group of (PEG‐diamine) with incorporating amine‐terminated BTO@APTES nanofillers on the soft PDMS substrates generated high piezoelectric ...
Trung Dieu Do +11 more
wiley +1 more source
Cyclic inert gas injection - an alternative approach to stimulate gas drainage from tight coal zones [PDF]
, 2013 Traditional methods of coal seam gas drainage depend on reducing the reservoir pressure to enable gas desorption from the coal matrix. Studies in coal mine gas drainage, particularly in coal seams that are deeply undersaturated and have low permeability,
Dennis Black (19586896)
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Intelligent prediction method for roof gas drainage roadway layout [PDF]
The roof gas drainage roadway, with its advantages of large flow and continuous extraction, is widely used in the gas control of high gas or outburst mine working faces.
Shibin GUO +5 more
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