Results 71 to 80 of about 3,983 (210)

Division of coalbed methane desorption stages and its significance

Petroleum Exploration and Development, 2014
To quantitatively analyze the effect of desorption characteristics on productivity, a division method of coalbed methane (CBM) desorption stages was established based on the Langmuir adsorption isothermal theory, and the indicating significance of the ...
Yanjun MENG, Dazhen TANG, Hao XU, Yingjie QU, Yong LI, Wenzhong ZHANG   +5 more
doaj   +1 more source

Evolution law of pulsating seepage and thermal deformation by injecting high‐temperature steam into coal for thermal coalbed methane recovery

Deep Underground Science and Engineering, Volume 4, Issue 1, Page 119-131, March 2025.
A new phenomenon of pulsation of steam permeability is discovered. The permeability of high‐temperature steam in coal shows a periodic pulsation pattern with an increase in the injection time. A two‐phase flow theory of gas–liquid is adopted to elucidate the mechanism of pulsating seepage of steam.
Zhiqiang Li, Junliang Li, Jinsheng Chen, Ali Karrech, Ningchao Zhang, Ju Chang, Kaiqi Jin, Yangyang Yu, Hongbin Wang, Aijie Wang   +9 more
wiley   +1 more source

Development of Designing and Performing Procedure for Well Test in Coalbed Methane(CBM) Reservoir

Economic and Environmental Geology, 2013
Depatment of Energy and Resources Engineering, College of Engineering, Chonnam National University,Gwangju, 500-757, Korea The most critical factor in developing coalbed methane(CBM) reservoir is absolute permeability. Both productiv-ity and economics of the CBM depend on the absolute permeability.
Jinyoung Park, Jeonghwan Lee
openaire   +2 more sources

The measurement of coal porosity with different gases [PDF]

, 2002
Sorption processes can be used to study different characteristics of coal properties, such as gas content (coalbed methane potential of a deposit), gas diffusion, porosity, internal surface area, etc.
Lemos de Sousa, M. J., Rodrigues, Cristina   +1 more
core   +1 more source

Study on the Influence of Complicated Geological Condition Permeability in Coal Reservoirs on Horizontal Well Drainage and Production

Energy Science &Engineering, Volume 13, Issue 3, Page 1414-1424, March 2025.
The mathematical model of double porosity and double permeability of gas and water two‐phase, matrix system, and fracture system in coal reservoir and the complex geological model of Liujia District are established, and the influence of coal reservoir permeability on horizontal well drainage is analyzed.
Bing Qin, Qifu Wei, Wenjing Duan, Zhanshan Shi, Jianfeng Hao, Bing Liang, Weiji Sun   +6 more
wiley   +1 more source

A fully coupled hydro-mechanical model for the modeling of coalbed methane recovery [PDF]

, 2017
Most coal seams hold important quantities of methane which is recognized as a valuable energy resource. Coal reservoir is considered not conventional because methane is held adsorbed on the coal surface. Coal is naturally fractured, it is a dual-porosity
Al-Jubori, Amadei, Ayoub, Bandis, Barenblatt, Barton, Barton, Bear, Benjamin Cerfontaine, Berkowitz, Biot, Bishop, Brooks, Brunauer, Ceglarska-Stefaríska, Chang, Charlier, Chen, Coats, Collin, Collin, Coppens, Corey, Coussy, Crank, Cui, Darcy, Day, Fick, Flores, Fossum, François Bertrand, Frédéric Collin, George, Gerami, Gilman, Goodman, Graham, Gray, Gu, Habraken, Harpalani, Jones, Karacan, Kazemi, Kewen, Langmuir, Laubach, Lekhnitskii, Levine, Lim, Liu, Lu, Malvern, Mandelbrot, Mason, Mazumder, Mazzotti, Mitra, Moore, Mora, Neuman, Newman, Nuth, Olivella, Ottiger, Palmer, Palmer, Pan, Panday, Peaceman, Quintard, Reiss, Salmachi, Sander, Schrefler, Seidle, Shi, Somerton, Szwilski, Terzaghi, Tuncay, Ueda, van Golf-Racht, Warren, Wei, Zienkiewicz, Zimmerman   +87 more
core   +3 more sources

Research on the Construction of Coal Powder Settling Final Velocity Model for Coalbed Methane Wells in Panhe Block

Energy Science &Engineering, Volume 13, Issue 1, Page 227-239, January 2025.
ABSTRACT In response to the severe problem of coal powder production in the Panhe block coalbed methane wells in the southern Qinshui Basin, the characteristics of coal powder production in the study area were identified through sample testing, indoor experiments, and theoretical calculations.
Zhou Zhang, Wanying Yu, Min Zhou, Pengxiang Wang, Jintao Zhang, Yunxing Cao, Baoan Xian, Yibing Wang, Fei Zhang   +8 more
wiley   +1 more source

Analisis Keekonomian Pengembangan Coalbed Methane (Cbm) Di Indonesia Dengan Berbagai Model Production Sharing Contract (Psc) Berbasis Joint Study Pada Lapangan Cbm X [PDF]

, 2015
Gas CBM (Coalbed Methane) di Indonesia mempunyai cadangan yang besar, tetapi pada Kenyataannya pengembangannya masih tersendat, sehingga menyebabkan energi ini belum dimanfaatkan secara maksimal. Hal ini dikarenakan belum ada formula khusus yang mengatur
Ariyanto, A. B. (Arif), S, S. N. (Siti)
core  

Hybrid ANN–GWO Algorithm for Improving Methane Drainage Efficiency in Cross‐Measure Borehole in Underground Coal Mines

International Journal of Energy Research, Volume 2025, Issue 1, 2025.
Methane release during mining exploitation represents a severe threat to miners’ safety. Methane gas can be removed from coal seams using predrainage and postdrainage techniques and used to generate electricity or for household purposes. One of the postdrainage methods is the cross‐measure borehole method, which involves drilling boreholes from the ...
Ali Hosseini, Mehdi Najafi, Amin Hossein Morshedy, Özgür Ömer Ersin   +3 more
wiley   +1 more source

Dampak Lingkungan Dan Sosial Dari Pengembangan Cbm Di Indonesia [PDF]

, 2011
Indonesia has one of the largest Coal Bed Methane (CBM) reserves in the world with a potential 453 trillion cubic feet (“Tcf”), more than double the country's natural gasreserves.
Hartiniati, H. (Hartiniati)
core