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Clean Energy 2021年第2期5卷 329-338页

作者： Jinhua Zhang Lanting Li Qiang Qin Clean coal Technology Development National Institute of Clean-and-low-carbon EnergyBeijing 102209China Beijing Research Institute of coal Chemistry China Coal Research InstituteBeijing 100013China

In the process of enriching CH4 from coal-bed methane,the separation of CH_(4)/N_(2)is very difficult to accomplish by an adsorption process due to the similar physico-chemical properties of the two molecules.A series of coconut-shell-based granular activated carbons(GACs)with different pore structures were prepared,which were characterized by different *** influence of the pore structure on the separation properties was investigated in *** results show that one of the carbons prepared(GAC-3)has high CH4 equilibrium adsorption capacity(3.28 mol·kg–1)at 298 K and equilibrium separation coefficient(3.95).The CH_(4)/N_(2)separation on the GACs is controlled by adsorption equilibrium as compared with the dynamic *** the specific surface area,for example,the common characterization index of the pore structure is not enough to judge the separation performance of the ***,the microstructure of carbon materials plays a decisive role for CH_(4)/N_(2)*** to the pore-structure analysis,the effective pore size for the CH_(4)/N_(2)separation is from 0.4 to 0.9 nm,with the optimum effect occurring in the range of 0.6–0.7 nm,followed by the range of 0.7~0.9 ***,a four-bed vacuum pressure swing adsorption process was adopted to evaluate the performance of GACs for the separation of CH4 from nitrogen.

关键词： coal-bed methane CH_(4) vacuum pressure swing adsorption activated carbon

A Comprehensive Appraisal on the Characteristics of coal-bed methane Reservoir in Turpan-Hami Basin

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Journal of China University of Mining and Technology 2007年第4期17卷 521-525,545页

作者： TANG Shu-heng WANG Yan-bin ZHANG Dai-sheng School of Energy Resources China University of Geosciences Beijing 100083 China School of Mineral Resources and Safety Engineering China University of Mining and Technology Beijing 100083 China

The rich coal-bed methane resources in the Turpan-Hami Basin are mainly located in the Shisanjianfang,Hami,Shanshan,Sha'erhu,Kekeya,Kerjian,Aidinghu inclines and the Dananhu coal-bed methane reservoirs. The big-ger coal-bed reservoirs are sitting at a depth of less than 1500 m. The coalbed methane generation,storage and confin-ing conditions of the Turpan-Hami basin can be indicated by eight key parameters. They are coal-bed thickness,coal rank,missing period,permeability,Langmuir volume,rock covering ability,structural confinement and hydrodynamic sealing environment. These parameters constitute a comprehensive appraisal index system of the coal-bed methane res-ervoir characteristics of the Turpan-Hami basin. In these parameters,the missing period of coal-bed methane is indi-cated by a stratum missing intensity factor. It reflects the relative exposure period of coal series. The results of a fuzzy comprehensive judgment showed that the Shisanjianfang coal-bed methane reservoir has the best prospects for exploita-tion and the Sha'erhu,Shanshan,Hami coal-bed methane reservoirs are next in line.

关键词： coal-bed methane reservoir-forming characteristics key index fuzzy comprehensive judgment Turpan-Hami basin

Application of Seismic Anisotropy Caused by Fissures in coal Seams to the Detection of coal-bed methane Reservoirs

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Acta Geologica Sinica(English Edition) 2000年第2期74卷 425-428页

作者： LIU Mei GOU Jingwei YU Guangming LIN Jiandong Research Institute of coal Geophysical Exploration Zhuozhou 072750Hebei

coal-bed methane is accumulated in micro-fissures and cracks in coal seams. The coal seam is the source terrace and reservoir bed of the coal-bed methane (Qian et al., 1996). Anisotropy of coal seams is caused by the existence of fissures. Based on the theory of S wave splitting: an S wave will be divided into two S waves with nearly orthogonal polarization directions when passing through anisotropic media, i.e. the fast S wave with its direction of propagation parallel to that of the fissure and slow S wave with the direction of propagation perpendicular to that of the fissure.

关键词： coal-bed methane coal-seam fissure anisotropy splitting of S wave

The experiment study on slippage effect of the coal-bed methane transfusion

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Journal of coal Science & Engineering(China) 2008年第4期14卷 530-533页

作者：彭晓华潘一山肖晓春陈长华 College of Science Liaoning Technical UniversityFuxin 123000China College of Mechanics and Engineering Sciences Liaoning Technical UniversityFuxin 123000China College of Resources and Environmental Engineering Liaoning Technical UniversityFuxin 123000China

When the gas flow in the compact porous medium at low speed,it has slippage effect which is caused by the gas molecular collision whit the *** the gas transfusion slippage effect at researching the coal bed transfusion rule,established the transfusion mathematical model of the coal bed which had considered the slippage effect. Observing the influence of the different toencircle presses,the different hole press and the different actual stress to the coal bed by using the three-axles *** sum- marized the transfusion rule of the coal *** experiment indicates that the bigger of the surrounding pressure,the more obvious of the slippage *** the same condition of axial pressure and the surrounding pressure,with the increase of the hole pressure,the coal permeability became bigger and then *** coal body effective tress and the permeability curve nearly also has the same change *** we can draws the conclusion that the transfusion of the gas in the coal bed generally has the slippage effect.

关键词： coal-bed methane the transfusion slippage effect

Practice of Unconventional Gas Development and Engineering Management Innovation in China

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Frontiers of Engineering Management 2014年第1期1卷 18-29,116页

作者： Wen-rui Hu Jing-wei Bao Bin Hu CNPC Advisory Centre Petro China Research Institute of Petroleum Exploration&Development College of Petroleum Engineering China University of Petroleum CNPC Planning Department

This article analyses the recent progressive increase in resource quantity and production quantity of unconventional natural gas in China, describes its natural properties and the concepts, strategies and approaches of its development, summarizes the special techniques, management concepts and development modes formed in the process of its development, and puts forward proposals to accelerate the development of unconventional natural gas of China. The technically recoverable reserve of unconventional natural gas is 1.7 times that of conventional natural gas and its output in 2012 accounted for 41.8% of the total output in China. Chinese tight gas development has gained success, coal-bed methane development and shale gas production pilots have made important progresses. As the key feature of unconventional natural gas is 'low grade', for the effective scale development, developers must build up the engineering concept of low-grade resources development, adhere to the low cost strategy, take the development route of 'a step backward and then a step forward', apply such ideas and methods of engineering management as low cost dualistic integrative innovation, full control network management, economic limit theory, integrated operation and 'four orientations' engineering management, establish a 'two lows' engineering management system, and take reference of the successful development mode of the tight gas in Sulige and the coal-bed methane in the Qinshui basin. In order to achieve the objective of rapid development of nonconventional natural gas in China and to accelerate the development pace, the government should continue toincrease support, to speed up the reform of natural gas price adjustment, to set up national comprehensive development and utilization demonstration areas, to input in sustainable technological research and to promote engineering management innovation.

关键词： natural gas unconventional tight gas coal-bed methane shale gas engineering management innovation proposals