Results 61 to 70 of about 4,868 (217)

Equipment configuration and process technology of hybrid oil-electric fracturing for deep coalbed methane [PDF]

Youqicang pingjia yu kaifa
In order to address the technical challenges in equipment configuration for hybrid oil-electric fracturing in deep coalbed methane reservoir modification, this study used the configuration of hybrid oil-electric fracturing equipment for deep coalbed ...
ZHAO Chongsheng, WANG Bo, GOU Bo, LUO Pengfei, CHEN Guojun, WU Guoquan
doaj   +3 more sources

Economic evaluation and investment decision-making process of deep coalbed methane exploration and development projects

Meitan kexue jishu
Deep coalbed methane is a high-quality natural gas resource that has seen rapid exploration and development progress in recent years and holds an extremely promising future.
Youjin DAI, Fengyin XU, Feng WANG, Pengfei MA, Yun YANG, Jian YUN, Jie XU, Xiaoyi SUN, Shan CHENG, Yuxin LI   +9 more
doaj   +1 more source

Mitigating Surface Tension Effects in Multi‐Coalbed Methane Reservoirs: Case Study of Liupanshui Field

International Journal of Energy Research, Volume 2026, Issue 1, 2026.
Water locking effect caused by surface tension severely restricts coalbed methane (CBM) productivity in multilayer reservoirs. The Songhe demonstration area features main target coal seams with overpressure, high gas content, and high gas saturation, presenting favorable CBM development conditions.
Zhu Liu, Yu Xiong, Shiliang Zhu, Zong Ren, Xiao Wang, Xixi Hao, Yun Feng, Mahmoud Ahmed   +7 more
wiley   +1 more source

Study on the characteristics of gas permeability of coal under loaded stress [PDF]

, 2017
The #3 coal seam of Jinsheng Rundong Ltd. of Jin-Coal Group in Shanxi Province, China, has high gas content and pressure; however, it has a low gas permeability, which can easily cause gas enrichment and may cause accidents of coal and gas outbursts.
Li, Dengke, Li, Xinping, Qu, Dengxing, Wang, Gongzhong, Zhang, Jianhua   +4 more
core   +1 more source

Gas Diffusion Coefficient in Tight Sandstones: An Experimental Approach Under Various Controlling Factors

Geofluids, Volume 2026, Issue 1, 2026.
This study investigates the natural gas diffusion coefficients in tight sandstones, emphasizing the Sulige area′s geological conditions. Through experimental measurements and the simulation of natural gas diffusion processes, we explore the impact of various geological factors—including temperature, pressure, porosity, permeability, pore throat radius,
Zhongying Zhao, Shan Lu, Lijun Zhang, Shouxu Pan, Tao Chen   +4 more
wiley   +1 more source

Mechanism of cement sheath sealing degradation in multistage fracturing of deep coalbed methane

Meitan xuebao
Under multistage fracturing conditions for deep coalbed methane, the cement sheath of the upper fracturing section is subjected to a complex loading environment.
Jiang XIN, Yanlan YANG, Wei WANG, Jianjun WU, Jinliang HAN, Zaoyuan LI, Sheng HUANG, Donghua SU   +7 more
doaj   +1 more source

Biogenic methane in shale gas and coal bed methane : a review of current knowledge and gaps [PDF]

, 2016
Biogenic CH4 generation has been observed in many shallow, low temperature shale gas basins and coal seams. The depletion of conventional resources and the increasing demand of natural gas for human consumption have spurred the development of so-called ...
Boothman, Christopher, Colosimo, Fabrizio, Kalin, Robert, Lloyd, Jonathan R., Lord, Richard, Smith, Anthony D., Taylor, Kevin G., Thomas, Russell   +7 more
core   +1 more source

Experimental Study on Multiscale Evolution Mechanism of Coalbed Reservoir Properties in “Three‐Low” CBM Reservoirs Modified by Chlorine Dioxide

Geofluids, Volume 2026, Issue 1, 2026.
Aiming at the “three‐low” challenges (low permeability, low gas saturation, and low critical desorption‐to‐storage ratio [CDSR]) of Chinese coalbed methane (CBM) reservoir materials, this study adopted chlorine dioxide (ClO2) chemical modification on long‐flame, coking, and anthracite coal materials.
Chaowen Hu, Ruifeng Huang, Huifeng Wang, Bo Pan, Xiaojie Yang, Yichao Li, Fulong Sun, Umberta Tinivella   +7 more
wiley   +1 more source

Peculiarities of geological and thermobaric conditions for the gas hydrate deposits occurence in the Black Sea and the prospects for their development [PDF]

, 2019
The actuality has been revealed of the necessity to attract the gas hydrate deposits of the Black Sea into industrial development as an alternative to traditional gas fields.
Bondarenko, V., Petlovanyi, M., Sai, K.
core  

Analysis of Gas Migration Characteristics and Controlling Factors in Nanopores of Deep Coal Seams

Geofluids, Volume 2026, Issue 1, 2026.
Nanopores of various scales and morphologies in coal are important spaces for gas storage and migration. To deeply analyse the initial gas migration scale and characteristics in coal matrix micropores, this paper constructs an apparent permeability model describing the gas migration scale based on the gas transport mechanism, and analyses the ...
Ji Xiaofeng, Cao Jinyao, Song Dangyu, Jian Kuo, Li Quanzhong, Pramita Mishra   +5 more
wiley   +1 more source