Results 21 to 30 of about 2,665,111 (174)

Thingking and utilization technology of coalbed methane in soft and low permeability coal seams in Huainan Mining Area

open access: yesMeitan kexue jishu, 2022
In order to solve the problems that restrict the efficient development of coalbed methane resources under the conditions of soft and low permeability outburst coal seams in Huainan Mining Area, such as complex coal seam structure, multi-source gas ...
Xiangxi KONG   +8 more
doaj   +1 more source

Technical advances in well type and drilling & completion for high-efficient development of coalbed methane in China

open access: yesNatural Gas Industry B, 2022
Compared with the United States, Australia, Canada, and other countries, China's coalbed methane reservoir is featured by low formation pressure, low permeability, low gas saturation, and strong heterogeneity, which not only increases the difficulty of ...
Deli Gao, Yansen Bi, Bao'an Xian
doaj   +1 more source

Geological evaluation and effective fracturing technology of Longtan Formation CBM in Nanchuan Block, Southeast Chongqing, China

open access: yesMeitan kexue jishu, 2023
The development of China’s coalbed methane (CBM) industry is unbalanced between the south and the north. As an important replacement resource in unconventional fields in southeast Chongqing, The beneficial exploitation of Longtan coalbed methane is ...
Hongsheng YAO   +4 more
doaj   +1 more source

Characteristics of low-rank coal reservoir and exploration potential in Junggar Basin: new frontier of low-rank CBM exploration in China

open access: yesJournal of Petroleum Exploration and Production Technology, 2020
Low-rank coal reservoirs of Badaowan Formation and Xishanyao Formation are mainly developed in Junggar Basin. This paper discussed their features and coalbed methane (CBM) exploration potential based on geological survey, coal samples testing and ...
Yuanjiang Yu, Yonghua Wang
doaj   +1 more source

Microbial diversity and biogenic methane potential of a thermogenic-gas coal mine [PDF]

open access: yes, 2014
The microbial communities and biogenic methane potential of a gas coal mine were investigated by cultivation-independent and cultivation-dependent approaches.
Wei, Min   +3 more
core   +1 more source

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

open access: yesEnergies, 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   +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

open access: yesEnergy 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   +4 more
doaj   +1 more source

Permeability Characteristics of Coal after Supercritical CO2 Adsorption at Different Temperatures

open access: yesGeofluids, 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   +3 more
doaj   +1 more source

Numerical Simulation Research on Hydraulic Fracturing Promoting Coalbed Methane Extraction

open access: yes, 2021
Although hydraulic fracturing technology has been comprehensively investigated, few scholars have studied the influence of hydraulic fracturing on the effect of coalbed methane (CBM) extraction, and few considered the interaction between water and CBM in
Huo Zhonggang   +4 more
core   +1 more source

Review of the Hydrogeological Controls on Coalbed Methane (CBM) and Development Trends

open access: yes, 2021
Hydrogeological conditions can control the generation, preservation, enrichment, and production of coalbed methane (CBM) in the field; however, research on these impacts is insufficient, resulting in the limitation of the development of coalbed methane ...
Wenjie Cao   +7 more
core   +1 more source

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