Results 51 to 60 of about 3,983 (210)

An analytical model for desorption area in coal-bed methane production wells [PDF]

, 2013
Production forecasting, well spacing, and well pattern optimization are key tasks in coal-bed methane field development plan. Desorption area around a production well is an important factor in well performance and reserve estimation.
Chen, D., Du, X., Haghighi, M., Li, X., Xu, B., Yang, X., Zhai, Y.   +6 more
core   +1 more source

Quantitative Identification and Distribution Pattern of Macrolithotype of Coal in Deep Coal Seams of the Daji Block

Energy Science &Engineering, Volume 13, Issue 10, Page 4839-4852, October 2025.
ABSTRACT The construction of a logging response model for macrolithotypes in coal has been successfully completed. This model has enabled delineation of vertical and planar distribution patterns of coal macrolithotypes within the #5 and #8 coal seams of the Daji block, as well as to forecast the distribution of favorable reservoir conditions.
Wei Zhang, Liheng Bian, Mingqing Hu, Peng Wu, Tim A. Moore, Jian Shen   +5 more
wiley   +1 more source

Geological evaluation and prediction of favorable areas of underground coal gasification in the Third Area of Aiding Lake in Tuha Basin

Meitan xuebao
Taking the coal reservoir in the Aiding Lake Area of the Tuha Coalfield as the research object, the characteristics of coal, rock, coal quality, coal seam occurrence, hydrological features, surrounding rock properties, and geological structural ...
Peng LAI, Bo WEI, Wenjie LI, Hu WANG, Zhenpeng HU, Shuguang YANG, Haichao WANG, Zhiwei ZENG, Zhengkai LIAO   +8 more
doaj   +1 more source

Bonding-strengthening technology in coalbed cementing through wettability improvement

Natural Gas Industry B, 2018
Coalbeds are characterized by high organic matter content, presence of joints and smooth joint surface, which lead to weak bonding between coal and set cement and poor cementing quality of coalbeds, and consequently the economic and effective development
Chengwen Wang, Fei Zheng, Hansen Sun, Degui Wang, Ruihe Wang, Hongtao Ma   +5 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

In situ loading of a pore network model for quantitative characterization and visualization of gas seepage in coal rocks

Deep Underground Science and Engineering, Volume 4, Issue 3, Page 437-451, September 2025.
Fine modeling of a three‐dimensional fracture structure under dynamic loading of coal is carried out. The streamline distribution law of pressure and velocity field in the loading process of the coal specimen is analyzed, the absolute permeability of the coal specimen is calculated, and the feasibility of the pore network model algorithm and finite ...
Huazhe Jiao, Xi Chen, Tiegang Zhang, Quilligan Michael, Yixuan Yang, Xiaolin Yang, Tongyi Yang   +6 more
wiley   +1 more source

The influence of tectonic evolution on the accumulation and enrichment of coalbed methane (CBM)

Chinese Science Bulletin, 2005
The current accumulation and enrichment of CBM reservoir is a result of the preservation and destruction of former CBM, after the superposing evolution of reversingand-uplifting and the subsequent evolution within the coalbearing basin. The critical moment of the CBM reservoir formation is the time when the burying depth of the overlying net thickness ...
Yan Song, Mengjun Zhao, Shaobo Liu, Hongyan Wang, Zhenhong Chen   +4 more
openaire   +1 more source

A new fracture permeability model of CBM reservoir with high-dip angle in the southern Junggar Basin, NW China

Energy Exploration & Exploitation, 2019
Predicting the permeability of coalbed methane (CBM) reservoirs is significant for coalbed methane exploration and coalbed methane development. In this work, a new fracture permeability model of coalbed methane reservoir with high-dip angle in the ...
Shiyu Yang, Yidong Cai, Ren Wei, Yingfang Zhou   +3 more
doaj   +1 more source

Coalbed Methane Potential and Coal Characteristics in the Lati Region, Berau Basin, East Kalimantan [PDF]

, 2006
Http://dx.doi.org/10.17014/ijog.vol1no1.20063aA geological research was performed in the Berau Basin, to provide a better understanding on the potential and resources of coalbed methane (CBM) in Berau Regency, East Kalimantan Province, particularly in ...
Hermanto, B. (Bambang), Kusumah, K. D. (Kusdji), Sihombing, T. (Torkis), Suwarna, N. (Nana)   +3 more
core  

Effects of variogram characteristics of coal permeability on CBM production: a case study in Southeast Qinshui Basin, China [PDF]

, 2014
The coalbed methane (CBM) resources of China are located mainly in 9 basins, Ordos, Qinshui, Jungar, Diandongqianxi, Erlian, Tuha, Tarim, Tianshan and Hailaer.
Wang, Jianzhong, Yao, Guangqing, Zhou, Fengde   +2 more
core   +1 more source