Results 31 to 40 of about 1,623 (179)

Stimulation practice of geology-engineering integration fracturing for deep CBM in Yanchuannan Field

Youqicang pingjia yu kaifa, 2021
As a new field of unconventional natural gas exploration and development, deep coalbed methane（CBM） has great resource potential, but its benefit development faces great challenges.
YAO Hongsheng, CHEN Zhenlong, GUO Tao, LI Xin, XIAO Cui, XIE Fei   +5 more
doaj  

Research on the Mechanism of Sand Bridge Stuck Drill in Deep Coal and Rock Gas Horizontal Wells

Energy Science &Engineering, Volume 14, Issue 2, Page 854-865, February 2026.
Accounting for wellbore collapse debris and the bulldozer effect, this study develops models for permeable and impermeable sand bridge sticking in deep CBM horizontal wells, deriving resistance and volume formulations. Validated in Changqing, results show impermeable bridges dominate; controls (fluid optimization, staged drilling, circulation, speed ...
Cheng Hui, Yong Ouyang, Zhifeng Duan, Xiaoyue Xu, Yuxiang Teng, Mingyang Liu, Hui Zhang, Long Chen   +7 more
wiley   +1 more source

Integrated Analysis of Pore and Fracture Networks in Deep Coal Seams: Implications for Enhanced Reservoir Stimulation

Energies
This study systematically investigates the pore–fracture architecture of deep coal seams in the JiaTan (JT) block of the Ordos Basin using an integrated suite of advanced techniques, including nuclear magnetic resonance (NMR), high-pressure mercury ...
Kaiqi Leng, Baoshan Guan, Chen Jiang, Weidong Liu   +3 more
doaj   +1 more source

Potential for CO2 sequestration and enhanced coalbed methane production in the Netherlands [PDF]

, 2006
This study investigated the technical and economic feasibility of using CO2 for the enhanced production of coal bed methane (ECBM) in the Netherlands. This concept could lead to both CO2 storage by adsorbing CO2 in deep coal layers that are not suitable ...
Barzandji, O., Bergen, F. van, Bruining, H., Faaij, A.P.C., Hamelinck, C.N., Jansen, Daan, Pagnier, H., Ruijg, G.J., Schreurs, H., Wolf, K.-H.   +9 more
core   +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

Methodologies for Gas Content Evaluation in Deep Coal/Shale Formations: Assessment, Improvement, and Comparison

Journal of GeoEnergy, Volume 2026, Issue 1, 2026.
Gas‐in‐place (GIP) content is a critical indicator for evaluating deep coal/shale resource potential, typically categorized into lost gas content, desorbed gas content, and residual gas content. The lost gas content cannot be directly quantified and requires specific methods for assessment.
Lingqi Liu, Jun Wang, Shuangfang Lu, Shengxian Zhao, Yongyang Liu, Feng Wang, Hongcheng He, Jihua Xie, Guohui Chen, Nengwu Zhou, Pengfei Zhang, Wenbiao Li, Sun Mengdi   +12 more
wiley   +1 more source

Optimization Design Method and Application of Nitrogen Horizontal Well Drilling Technology in Coalbed Methane Reservoirs

Energy Science &Engineering, Volume 13, Issue 11, Page 5702-5712, November 2025.
Through the independent research and development of nitrogen drilling software, the calculation model of gas injection parameters and friction torque calculation model suitable for coalbed methane nitrogen drilling are established, and the calculation methods of construction parameters such as gas injection volume and injection pressure, friction ...
Hu Jiachen, Tan Zhanglong, Yang Fan, Hao Zhaobing, Yang Qi, Feng Lei, Wang Peng   +6 more
wiley   +1 more source

Distribution characteristics and exploration and development prospects of coalbed methane resources in Sinopec

Meitan kexue jishu
Exploration breakthroughs of deep coalbed methane (CBM) in the Ordos Basin have driven rapid industry development since 2019. Based on the characteristics of complex coalbed methane (CBM) resource types and strong spatial heterogeneity of reservoir ...
Dehua ZHOU, Gang CHEN, Shihu ZHAO, Baojian SHEN, Zengqin LIU, Jincheng YE, Xinjun CHEN, Jiaqi ZHANG   +7 more
doaj   +1 more source

Analysis of Gas Samples from Coalbed Methane Wells in Sullivan County, Indiana using Gas Chromatography [PDF]

, 2016
Although there has been an increase in natural gas production from coalbed methane (CBM) reservoirs in the past few decades, there are multiple inadequately known aspects of CBM reserves.
Niddery, Chad
core  

Carbon isotopic signature of coal-derived methane emissions to the atmosphere: from coalification to alteration [PDF]

, 2016
Currently, the atmospheric methane burden is rising rapidly, but the extent to which shifts in coal production contribute to this rise is not known.
A. Jasek, B. F. J. Kelly, C. P. Iverach, D. Lowry, E. G. Nisbet, E. Ginty, G. Zazzeri, J. L. France, J. L. France, J. M. Necki, M. Lanoisellé, M. Zimnoch, R. E. Fisher   +12 more
core   +2 more sources