Journal ArticleDOI
Characteristics of pore structure and fractal dimension of low-rank coal: A case study of Lower Jurassic Xishanyao coal in the southern Junggar Basin, NW China
Haijiao Fu,Dazhen Tang,Ting Xu,Hao Xu,Shu Tao,Song Li,Zhenyong Yin,Baoli Chen,Cheng Zhang,Linlin Wang +9 more
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TLDR
In this paper, a series of laboratory experiments were performed to firstly analyze the characteristics of the pore structure in low-rank coal (R o 1000nm), with a poor development of mesopores (100-1000nm).About:
This article is published in Fuel.The article was published on 2017-04-01. It has received 211 citations till now. The article focuses on the topics: Fractal analysis & Fractal dimension.read more
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Experimental study on the effect of high-voltage electrical pulses on the nanoscale pore structure of coal
TL;DR: In this paper, the effect of high-voltage electric pulses on the nanoscale pore structure of coal using a custom-built experimental device was investigated, and the results revealed that the high voltage electric pulse breakdown process decreased the specific surface area, pore volume, and number of micropores.
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Investigation of coal and rock geo-mechanical properties evaluation based on the fracture complexity and wave velocity
TL;DR: In this article, the relationship among rock mechanics parameters, cleat complexity, and wave velocity were analyzed, and the results indicated that coal with different cleat density, quantity, or angle has noticeable fractal characteristics.
Journal ArticleDOI
Characterizing coal pore space by gas adsorption, mercury intrusion, FIB–SEM and µ-CT
TL;DR: In this paper, the pore structure characteristics of coal samples cored from the No. 9 coal seam of upper Permian Longtan formation at the Longfeng mine were analyzed.
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Pore structure of different macroscopically distinguished components within low-rank coals and its methane desorption characteristics
TL;DR: In this paper, the pore structure of the macroscopically distinguished components is complex, which directly affected methane adsorption/desorption in low-rank coals.
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Theory and Application of Pseudo-Reservoir Hydraulic Stimulation for Coalbed Methane Indirect Extraction in Horizontal Well: Part 2—Application
TL;DR: In this article, the technical feasibility of pseudo-reservoir stimulation is determined by the regional geological conditions, showing simple tectonic conditions and well-developed surrounding rocks with high fracability and mechanical strength but low permeability, water sensitivity and water content are beneficial for the technique application.
References
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Adsorption of Gases in Multimolecular Layers
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Microfluidics: Fluid physics at the nanoliter scale
Todd M. Squires,Stephen R. Quake +1 more
TL;DR: A review of the physics of small volumes (nanoliters) of fluids is presented, as parametrized by a series of dimensionless numbers expressing the relative importance of various physical phenomena as mentioned in this paper.
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Recommendations for the characterization of porous solids (Technical Report)
Jean Rouquerol,D. Avnir,C. W. Fairbridge,D. H. Everett,J. M. Haynes,N. Pernicone,J. D. F. Ramsay,Kenneth S. W. Sing,Klaus K. Unger +8 more
TL;DR: In this article, the authors present a tool for the selection and appraisal of the methods of characterization of porous solids, and also give the warnings and guidelines on which the experts generally agree.
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Coalbed methane: A review
TL;DR: In this paper, it is shown that the micropores are where most methane adsorption occurs in coal seams, and the methane molecule may actually stretch, minutely, the pore and thus with de-gassing of the reservoir, could result in matrix shrinkage, allowing opening of the fracture (cleat) system in the coal and thus enhancing permeability.
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Petrophysical characterization of coals by low-field nuclear magnetic resonance (NMR)
TL;DR: Wang et al. as mentioned in this paper proposed a new NMR-based per-meability model that better estimates the permeability of coals, which has potential applications for NMR well logging in coalbed methane exploration.