Results 231 to 240 of about 48,672 (258)

Mathematical Description of Gas Drainage Radius for Underground Gas Storage

Chemistry and Technology of Fuels and Oils, 2018
Most underground gas storage in China encounters the problem of evaluating gas drainage. In order to evaluate the gas reservoir parameters, we propose a mathematical model for calculating the gas drainage radius. The model describes the gas seepage mechanism based on material balance, and lets us evaluate the gas drainage radius for any well pattern ...
Tang Ligen, Ding Guosheng, Sun Chunhui, Wang Jieming   +3 more
openaire   +1 more source

Studies on Improving Drainage Gas Recovery Efficiency of Gas Wells

2018
Nearly forty percent of gas wells in Daqing Oil Field have been producing water, resulting in reduced production and increased cost. Reasonable measures are required to improve drainage gas efficiency of these wells. Based on the influencing factors of drainage gas recovery process, efficiency could be improved in three aspects, including optimizing ...
M. Cai, P. G. Ma, J. Q. Wang, W. H. Ma, C. G. Wang, Z. P. Yang, J. L. Li, N. Li   +7 more
openaire   +1 more source

Computer simulation of gas pressure and drainage radius for dense boreholes gas pre-drainage in outburst coal seam

2009 4th International Conference on Computer Science & Education, 2009
The computer simulation technique has been widely applied to the mine disaster control field. In this paper, we discuss the use of dense borehole pre-drainage technology as a preventive measure for coal and gas outburst. In order to enhance the pre-drainage efficiency and rationally arrange the borehole, the solid-gas coupled RFPA2D-Gas software is ...
Li-jun Yi, Zhi-ling Tang, Qi-xiang Yu
openaire   +1 more source

Significance of gas flow in anisotropic coal seams to underground gas drainage

Journal of Petroleum Science and Engineering, 2019
Abstract At present, gas drainage technology from boreholes is an effective means of preventing gas disasters in deep mines and realise better utilisation of gas. To study the spatio-temporal evolution of gas flow fields around boreholes for gas drainage, it was postulated that the permeability of a coal mass is a non-free vector relating to spatial ...
Baiquan Lin, Haoran Song, Yang Zhao, Ting Liu, Jia Kong, Zhanbo Huang   +5 more
openaire   +1 more source

Characterization and drainage kinetics of colloidal gas aphrons

AIChE Journal, 2005
AbstractThe variation of air holdup and stability of colloidal gas aphrons (CGAs) with stirring time, surfactant concentration [6, 8.1, 10, and 12 mM sodium lauryl sulfate (SLS)], and stirring speed (3500–7000 rpm) was investigated, and an empirical correlation between the air holdup and stirring time was obtained.
Divesh Bhatia, Gaurav Goel, Sidhartha K. Bhimania, Ashok N. Bhaskarwar   +3 more
openaire   +1 more source

Study on gas migration law and influencing factors of gas drainage

International Journal of Oil, Gas and Coal Technology, 2022
Yi Wang, Chenguang Zhao, Bing Wu
openaire   +1 more source

Investigation on gas drainage effect under different borehole layout via 3D monitoring of gas pressure

Journal of Natural Gas Science and Engineering, 2022
Fazhi Yan, Peng Shoujian
exaly  

Evaluation of underground coal gas drainage performance: Mine site measurements and parametric sensitivity analysis

Chemical Engineering Research and Design, 2021
Deyi Jiang, Jinyang Fan
exaly  

Optimization of gas drainage parameters by LBM

2008
Y Tan, M Gao, G Teng
openaire   +2 more sources

Comparisons of gas drainage methods

2017
openaire   +1 more source