Results 11 to 20 of about 442 (134)

Transient Flow of a Horizontal Well with Multiple Fracture Wings in Coalbed Methane Reservoirs

Energies, 2020
Horizontal wells with multi-stage fractures have been widely used to improve coalbed methane (CBM) production from coalbed methane reservoirs. The main focus of this work is to establish a new semi-analytical method in the Laplace domain and investigate ...
Qing Tian, Yudong Cui, Wanjing Luo, Pengcheng Liu, Bo Ning   +4 more
doaj   +1 more source

Evaluation of deep high-rank coal seam gas content and favorable area division based on GIS: A case study of the South Yanchuan block in Ordos Basin

Energy Exploration & Exploitation, 2022
The South Yanchuan block is the deepest developed high-rank coalbed methane (CBM) field in China, the geological conditions in this block are complex and the main controlling factors of CBM content are various.
Yutong Fu, Qinghe Niu, Bin Cui, Dan Huang, Xinhan Xie   +4 more
doaj   +1 more source

Enrichment mechanism and exploration and development technologies of high coal rank coalbed methane in south Qinshui Basin, Shanxi Province

Petroleum Exploration and Development, 2016
Based on analysis of the basic geologic characteristics and enrichment controlling factors of the high coal rank coalbed methane (CBM) in south Qinshui Basin in China, its enrichment mode, and exploration and development technologies are studied ...
Xianzheng ZHAO, Yanhui YANG, Fenjin SUN, Bo WANG, Yinqing ZUO, Mengxi LI, Jian SHEN, Fuyuan MU   +7 more
doaj   +1 more source

Adjustment countermeasures for efficient development of deep coalbed methane in southern Yanchuan CBM Field

Youqicang pingjia yu kaifa, 2022
The deep underground place in China is rich in coalbed methane resources, so that it is an important field of further exploration and development of coalbed methane.
YAO Hongsheng, XIAO Cui, CHEN Zhenlong, GUO Tao, LI Xin   +4 more
doaj  

Permeability Characteristics of Coal after Supercritical CO2 Adsorption at Different Temperatures

Geofluids, 2020
CO2 storage in coal seams has become one effective method to reduce CO2 emission and help exploit coalbed methane (CBM). The permeability is a key parameter for CBM extraction. In deep coal seams (>800 m), CO2 exists in the supercritical state.
Xueying Liu, Jin Yu, Di Wu, Xiaochun Xiao   +3 more
doaj   +1 more source

Study on the Influence of Deep Coalbed Methane Horizontal Well Deployment Orientation on Production

Energies
The development of deep coalbed methane has become an important way to obtain natural gas in China. The development of deep CBM mainly depends on horizontal well technology.
Ruyong Feng, Chen Li, Lichun Sun, Jian Wang, Jia Liu, Na Li   +5 more
doaj   +1 more source

Reservoir reconstruction technologies for coalbed methane recovery in deep and multiple seams

International Journal of Mining Science and Technology, 2017
Multiple coal seams widely develop in the deep Chinese coal-bearing strata. Ground in situ stress and coal seam gas pressure increase continuously with the increase of the mining depth, and coal and gas outburst disasters become increasingly severe. When
Liang Wang, Shimin Liu, Yuanping Cheng, Guangzhi Yin, Dongming Zhang, Pinkun Guo   +5 more
doaj   +1 more source

Study on the Law of Multi‐Fracture Propagation in Different Fracturing Fluid Viscosity

Energy Science &Engineering, Volume 14, Issue 3, Page 1339-1352, March 2026.
Samples and equipment Sample preparation Test equipment Analysis of test results Fracture propagation morphology Influence of fracturing fluid viscosity on crack initiation time/(fracture initiation pressure) Evolution law of injection pressure Cumulative relation curve of pressure–time–acoustic ABSTRACT Using the TCHFSM‐I large‐scale accurate triaxial
Zhixing Zhang, Xiang Fu, Yuedong Liu, Xiaoqiang Zhang, Yulong Jiang   +4 more
wiley   +1 more source

Multi-scale structural inheritance of fracture systems pattern in coal-bearing measures of the Lorraine-Saar coal Basin

Геофизический журнал, 2022
The Lorraine-Saar Basin (LSB) is one of the major Paleozoic coalfields of Western Europe that has been shapedover two centuries as a heartland of underground coal mining and associated industrial activities in the transborderarea of France and Germany ...
V. Pryvalov , J. Pironon, P. de Donato , R. Michels, A. Izart, C. Morlot, O. Panova   +6 more
doaj   +1 more source

A study on Mechanical Seepage Characteristics of Coal‐Rock Mass Under the Combined Action of Multiple Factors

Safety Science and Technology, Volume 1, Issue 1, March 2026.
Schematic diagram of a triaxial fluid–solid coupling device based on the mapping function. ABSTRACT In deep coal mining, the influence of temperature–pressure coupling on the mechanical properties of coal is a crucial factor inducing dynamic disasters.
Musen Gao, Heng Ma, Xiaoqi Wang, Ke Gao
wiley   +1 more source