Results 1 to 10 of about 104,276 (259)

Recent Advances and Future Prospects Towards CO₂ Methanation Reaction

Methane
The reaction of CO2 hydrogenation into CH4 provides an industrial-scale pathway for CO2 recycling. The controllable design of catalysts with highly active and stable performance is challenging, and investigation of the reaction mechanism is of great ...
Fanying Zhang, Bin Lu, Jihao Zhang
doaj   +1 more source

Sedimentary patterns and exploitation practices of tight-sand gas reservoirs in coal measure strata: A case study of the 3rd submember of the second member of the Permian Shanxi Formation in the Daning-Jixian block

Meitian dizhi yu kantan
BackgroundThe third submember of the second member of the Permian Shanxi Formation (also referred to as the Shan 23 submember) in the Daning-Jixian block along the eastern margin of the Ordos Basin is identified as a primary target layer for tight-sand ...
Lei ZHANG, Li HUANG, Longmei ZHAO, Feng WANG, Yixin ZHANG, Shi SHI, Wen ZHANG, Haoyang ZHAO, Tong CHEN, Jiangnan TONG   +9 more
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Key technologies of efficient extraction of coalbed methane (gas) in Guizhou coal mine area

Meitan kexue jishu
Under the background of “double carbon” goal, how to solve the problem of frequent gas over-limit in high gas mine and efficient surface extraction of coalbed methane in coal mine area, we must find ways to realize efficient cooperative development of ...
Wang YI, Longjun LIANG, Lichong YAN, Zhihua YAN, Jie CHEN, Wei GAO, Yi LOU, Fuqin YANG, Haiyang HU, Jiawei ZHU   +9 more
doaj   +1 more source

Influence of rock mechanics characteristics on fracturing and development strategies in the Zhengzhuang Block

Meitan kexue jishu
The rock mechanical parameters of coal reservoirs play an important role in controlling the formation and evolution of natural fractures and the propagation of artificial fractures, and are the key factors affecting the fracturing transformation of coal ...
Cong ZHANG, Liping ZHAO, Ruiqiang YANG, Qi WANG, Guangjie SANG, Kexin LI, Yuting WANG, Huimin JIA, Jun LI   +8 more
doaj   +1 more source

Nanoconfined Methane Storage Mechanism in Deep Coal Seams: A Wettability-Coupled Simplified Local Density Model

Nanomaterials
In deep coal seams, where nanopores (~2 nm) dominate, wettability effects, which govern molecule–wall interaction strength, critically control the methane storage, yet remain poorly understood.
Liang Ji, Xianyue Xiong, Zhihong Nie, Zhengchao Zhang, Ming Yuan, Yang Zhang, Chengchao Xu, Xiaolong Zhao, Hongtao Yang, Chengming Zhao, Zheng Sun   +10 more
doaj   +1 more source

Physical Simulation and Law of Interlayer Interference in Multi-Layer Combined Production of Gas Reservoirs with Pressure Difference

Energies
To address interlayer interference during multi-layer commingled production in gas reservoirs with pressure differences, this study investigates the low-permeability gas reservoir in the central Linxing area of the Ordos Basin.
Yu Su, Bing Zhang, Honggang Mi, Chao Wei, Bo Wang, Le Sun, Tianyu Fu, Chen Wang   +7 more
doaj   +1 more source

The disaster law and control measures of high-stress tunnels in fault areas: a case study

Scientific Reports
In recent years, the frequent occurrence of dynamic disasters in tunnels with high stress in fault areas has greatly threatened engineering safety. The typical case – a tunnel influenced by fault slip on is taken as a research object.
Wenjie Li, Mingwei Yao, Zhengkai Liao, Jinbiao Wu, Nenghui Ma, Jingyi Su, Chenchuan Mei, Wenzhe Wang   +7 more
doaj   +1 more source

Uncertainty Analysis Method for Rib Force Vector Control of Coiled Tubing Drilling Orientor

Shiyou jixie
In the process of coiled tubing （CT） directional drilling， the downhole parameters have some uncertainties. To more accurately control the wellbore trajectory to advance along the planned course， an uncertainty analysis method for rib force vector ...
Wang Wei, Zhuo Ran, Miao Qiang, Wu Jianjun, Li Shichao, Chen Gang, Li Meng   +6 more
doaj   +1 more source

Optimization and application of sand bailing technology for coalbed methane horizontal wells

Meitian dizhi yu kantan
Objective and Methods Coalbed methane (CBM) horizontal wells face challenges such as sand accumulation in completion strings, pipe wall scaling, and pump sticking, leading to declined CBM production or shutdown of these wells.
Fei ZHANG, Yibing WANG, Lu CHENG, Wenbo MEI, Qi YANG, Wenjie SHEN, Chao CAO, Peng LAI, Zhengkai LIAO, Bao’an XIAN, Yansen BI   +10 more
doaj   +1 more source

Review: Enteric Methane Emissions Across Physiological Stages and Dietary NDF/NFC Ratios in Holstein Dairy Cattle-Implications for China's Carbon Mitigation. [PDF]

Animals (Basel)
Jia P, Tu Y, Zhang N, Lu N, Lei H, Jiang X, Diao Q.   +6 more
europepmc   +1 more source