Results 31 to 40 of about 6,394 (115)

Study on failure mechanism of cracked coal rock and law of gas migration

Frontiers in Earth Science
China possesses abundant coal resources and has extensive potential for exploitation. Nevertheless, the coal rock exhibits low strength, and the coal seam fractures due to mining activities, leading to an increased rate of gas emission from the coal seam.
Feng Du, Feng Du, Feng Du, Bing Liang, Yixing Ren, Xingchuan Liao, Lingjun Pei, Zuoyuan Fan, Wei Liu   +8 more
doaj   +1 more source

Characteristics, controlling factors of development and exploration areas of deep coal-rock reservoirs in rift basins: a case study of the second member of Cretaceous Nantun Formation in Huhehu Sag, Hailar Basin

Shiyou shiyan dizhi
In recent years, major breakthroughs have been made in deep coal-rock gas exploration, revealing the promising exploration prospects of such resources.
Geng GAO, Yingyi XIE, Beibei HOU, Wenjuan MA, Hui XU, Yujie WANG, Yingdong HUO, Jingyuan ZHANG, Shichao LIU, Wei ZHAO, Yuan LIANG   +10 more
doaj   +1 more source

Theoretical and technological concepts of synergistic coal and natural gas extraction

Meitan kexue jishu
There are a large number of overlapping coal and natural gas resources in China, and due to the requirement of resource extraction efficiency, a large number of overlapping coal and natural gas resources need to be extracted synchronously in the same ...
Shengli YANG, Shen ZHANG, Xudong WANG, Kai ZHANG, Delin XIN, Ruihao ZHAI   +5 more
doaj   +1 more source

Characteristics of coal-measure source rock and gas accumulation belts in marine-continental transitional facies fault basins: A case study of the Oligocene deposits in the Qiongdongnan Basin located in the northern region of the South China Sea

Energy Exploration & Exploitation, 2019
This study carried out the development and distribution prediction research on coal-formed gas accumulation belts from the perspectives of the development and distribution of the coal measure source rock and the thermal evolution degrees of those rock ...
Zhang Gongcheng, Wang Dongdong, Zeng Qingbo, Yang Haizhang, Li Zengxue, Zhao Zhao, Guo Shuai   +6 more
doaj   +1 more source

Multi-indicator precursor warning method for gas-bearing coal rock fracture based on charge signals

Meitan kexue jishu
To address the challenge of accurate precursor charge signal warning for gas-bearing coal rock dynamic disasters, a comprehensive warning method based on multi-indicator charge signals for gas-bearing coal rock failure is proposed.
Xiaochun XIAO, Xin MA, Xin DING, Yufeng FAN, Wenping ZHANG   +4 more
doaj   +1 more source

Accumulation characteristics and models of low-rank multi-source coal-rock gas in the Jurassic of Junggar Basin, China

Journal of Natural Gas Geoscience
The Junggar Basin is a large Jurassic low-rank coal-bearing basin in western China, mainly comprising the Xishanyao Formation and the Badaowan Formation, which are characterized by substantial coal measure thickness and stable spatial distribution.
Honglin Liu, Huaichang Wang, Ze Deng, Daojun Huang   +3 more
doaj   +1 more source

Distribution and genesis of mercury in natural gas of large coal derived gas fields in China

Petroleum Exploration and Development, 2019
The mercury content in natural gas samples from more than 500 gas wells in eight large gas bearing basins of China was tested, mercury release experiments on two coal samples from different areas were conducted, and the mercury content of 11 coal samples
Jian LI, Zhongxi HAN, Qituan YAN, Shuying WANG, Shouguo GE   +4 more
doaj   +1 more source

Simulation test research and application of blasting and penetration improvement in the soft coal seam floor

Meitan kexue jishu
Aimed at the problems of difficult drilling construction of blast penetration, undeveloped fractures produced by blast penetration, and the fractures is easy to recompact in the soft coal seam, the blasting operations carried out in the floor was ...
Kui GAO, Mi WANG, Guodong QIAO, Yu TIAN, Shigui FU, Youwei WANG   +5 more
doaj   +1 more source

Development indicators evaluation and technical optimization direction for deep coal-rock gas: A case study of Ordos Basin, NW China

Petroleum Exploration and Development
Through systematic investigation of deep coal-rock gas in the Ordos Basin, NW China, this work analysed the thickness distribution of the entire Upper Paleozoic coal-rock intervals, quantified the resource potential of representative areas (a 12 000 km2 ...
Ailin JIA, Guoting WANG, Neng WAN, Dewei MENG   +3 more
doaj   +1 more source

Study on characteristics of coal and gas outburst in Panjiang Mining Area based on Apriori algorithm

Meikuang Anquan
In order to reveal the occurrence law of coal and gas outburst disaster in Panjiang Mining area and improve the targeted work of gas prevention and control, the gas geological parameters of 37 coal and gas outburst accident points in Panjiang Mining Area
Kan ZHOU, Hongmin YANG, Jinfeng GUAN, Zhongying SI   +3 more
doaj   +1 more source