Results 11 to 20 of about 16,080,662 (298)

Prediction model of coal seam gas content based on ACSOA optimized BP neural network

Meikuang Anquan, 2022
For the problem of coal seam gas content prediction, the influencing factors of coal seam gas content were analyzed by taking No.2 coal seam of Chensilou Coal Mine as the research object.
Prediction model of coal seam gas content based on ACSOA optimized BP neural network
doaj   +2 more sources

History, Geology, In Situ Stress Pattern, Gas Content and Permeability of Coal Seam Gas Basins in Australia: A Review

Energies, 2021
Coal seam gas (CSG), also known as coalbed methane (CBM), is an important source of gas supply to the liquefied natural gas (LNG) exporting facilities in eastern Australia and to the Australian domestic market.
Alireza Salmachi, Mojtaba Rajabi, Carmine Wainman, Steven Mackie, Peter McCabe, Bronwyn Camac, Christopher Clarkson   +6 more
doaj   +2 more sources

A rapid and accurate direct measurement method of underground coal seam gas content based on dynamic diffusion theory

International Journal of Mining Science and Technology, 2020
Coal seam gas content is frequently measured in quantity during underground coal mining operation and coalbed methane (CBM) exploration as a significant basic parameter.
Yanwei Liu, Hani Mitri, Yang Du
exaly   +2 more sources

Discussion on determination of gas content of coal and uncertainties of measurement

International Journal of Mining Science and Technology, 2017
Gas content of coal is mostly determined using a direct method, particularly in coal mining where mine safety is of paramount importance. Direct method consists of measuring directly the volume of gas desorbed from coal in several steps, from solid then ...
A. Saghafi
exaly   +2 more sources

Gas Content Evaluation of Coalbed Methane Reservoir in the Fukang Area of Southern Junggar Basin, Northwest China by Multiple Geophysical Logging Methods

Energies, 2018
To study the gas potential of coalbed methane (CBM) in the Fukang area, southern Junggar Basin (SJB) of North China, different methods including multiple geophysical logging, the Kim method with proximate analysis data, and Langmuir adsorption were used ...
Xu Ge, Dameng Liu, Yidong Cai, Yingjin Wang   +3 more
doaj   +3 more sources

The Gas Content and Stripping of Local Group Dwarf Galaxies [PDF]

Astrophysical Journal, 2021
The gas content of the complete compilation of Local Group dwarf galaxies (119 within 2 Mpc) is presented using H i survey data. Within the virial radius of the Milky Way (224 kpc here), 53 of 55 dwarf galaxies are devoid of gas to limits of M H i < 104 ...
M. Putman, Yonggang Zheng, A. Price-Whelan, J. Grcevich, Amalya C. Johnson, E. Tollerud, J. Peek   +6 more
semanticscholar   +1 more source

CBM Gas Content Prediction Model Based on the Ensemble Tree Algorithm with Bayesian Hyper-Parameter Optimization Method: A Case Study of Zhengzhuang Block, Southern Qinshui Basin, North China

Processes, 2023
Gas content is an important parameter for evaluating coalbed methane reservoirs, so it is an important prerequisite for coalbed methane resource evaluation and favorable area optimization to predict the gas content accurately.
Chao Yang, Feng Qiu, Fan Xiao, Siyu Chen, Yufeng Fang   +4 more
semanticscholar   +1 more source

A New Method for Predicting the Gas Content of Low-Resistivity Shale: A Case Study of Longmaxi Shale in Southern Sichuan Basin, China

Energies, 2023
Low-resistivity shales are widely developed in the Sichuan Basin. The production of low-resistivity shale gas reservoirs ranges from high to low to none.
Xianggang Duan, Yonghui Wu, Zhenxue Jiang, Zhiming Hu, Xianglu Tang, Yuan Zhang, Xinlei Wang, Wenyi Chen   +7 more
doaj   +1 more source

Experimental Study on Rapid Determination Method of Coal Seam Gas Content by Indirect Method

Processes, 2023
In view of the problems of heavy work, long cycle, high cost and low efficiency in the process of indirect determination of coal seam gas content, the basic gas parameters and coal quality indexes of 24 coal samples from 5 coal mines in the Hancheng area
Hong-Yan Lei, Lin-Chao Dai, Jie Cao, Rifu Li, Bo Wang   +4 more
semanticscholar   +1 more source

Method for Intensive Gas–Liquid Dispersion in a Stirred Tank

ChemEngineering, 2023
This article presents the results of hydrodynamics and mass exchange in a stirred tank upon the introduction of gas from an open gas vortex cavity into local liquid regions with reduced pressure.
Nikolai A. Voinov, Alexander S. Frolov, Anastasiya V. Bogatkova, Denis A. Zemtsov, Olga P. Zhukova   +4 more
doaj   +1 more source