Results 31 to 40 of about 592,816 (305)

Impact of Sustainable Binders Based on Lignin and Collagen on the Volume Stability and Mechanical Properties of MgO‐C Refractories with MgO‐C Recyclates

Advanced Engineering Materials, EarlyView.
Collagen hydrolysate is evaluated as a sustainable binder for MgO‐C refractories. Its thermally induced cross‐linking and gas release lead to expansion and cracking in large bricks, but tailored batches with lignin, recyclates, or fine graphite improve the gas release while thermal treatment and stability.
Till M. J. Stadtmüller, Florian Kerber, Kirsten Moritz, Steffen Dudczig, Konstantin Kraushaar, Thomas Schemmel, Jana Hubálková, Patrick Gehre, Christos G. Aneziris   +8 more
wiley   +1 more source

Experimental investigation into vertical extension behavior of coal-measure tight sandstone reservoirs

Scientific Reports
The vertical fracture propagation morphology in sand-coal interbedded reservoirs is predominantly governed by interlayer mechanical relationships, intra-layer petrophysical properties, and fracturing operation parameters.
Shao Mingren, Li Bin, Wang Peng, Wang Kunjian, Yang Qi, Sun Zening, An Qi   +6 more
doaj   +1 more source

Research and application of micro-scale fracture prediction technology for deep coalbed methane based on five-dimensional seismic data

Meitan kexue jishu
During the large-scale development of deep coalbed methane in the Daji block on the eastern edge of Ordos Basin, using horizontal wells combined with large-scale volume fracturing, some wells experienced fracturing interference under similar fracturing ...
Lei ZHANG, Fengyin XU, Jiangnan TONG, Feng ZHANG, Feng WANG, Wei HOU, Yihang CHANG, Songyi HOU, Xiangbing PEI, Zhenyi CAO, Tong CHEN, Xuefeng LI, Ke ZHOU, Yongzhou LI, Huaibin ZHEN, Wenting ZENG   +15 more
doaj   +1 more source

Ideal Molecular Sieving with a Dense MOF for Helium Upgrading with Highly Diffusion Selective Mixed Matrix Membranes

Advanced Functional Materials, EarlyView.
The separation of Helium gas from natural gas is challenging but highly important. MIL‐116(Ga), a “non‐porous” metal–organic framework is used as a molecular sieve to separate He from CH4. Druse‐like MIL‐116(Ga) particles are integrated into polysulfone mixed matrix membranes.
Ayisha Komal, Laura Calderón‐Rodríguez, Oksana Smirnova, Eren Grossmann, Aparna Binu Varghese, Karen Marlenne Garcia Alvarez, Andreas Schneemann, Thomas Hoyer, Ralf Wyrwa, Felix Helmut Schacher, Alexander Knebel   +10 more
wiley   +1 more source

Favorable tectonic patterns for shale gas preservation and enrichment in lower Paleozoic, southeastern Chongqing, China

Energy Exploration & Exploitation
Marine shale reservoirs have experienced intense tectonic movements in southeastern Chongqing, resulting in widely developed folds, faults and bedding slip deformation. The gas content is of a wide range while the organic matter content and thickness are
Yongchen Li, Qiang Xu, Kedi Ma, Peng Wu, Haixing Yang, Yanxiang He, Liheng Bian, Xiaoli Yao, Xuedong Sun, Sidun Zhang, Zhuang Ma   +10 more
doaj   +1 more source

Theoretical and technological system for Highly efficient development of deep coalbed methane in the Eastern edge of Erdos Basin

Meitan xuebao
Aiming at the development problems of deep coal reservoirs, such as deep burial, low permeability and complex stress field, this paper clarifies that the resource enrichment conditions, effective fracturing volume, effective horizontal section length ...
Fengyin XU, Zhihong NIE, Wei SUN, Xianyue XIONG, Borui XU, Lei ZHANG, Xiaosong SHI, Ying LIU, Shirui LIU, Zengping ZHAO, Yuan WANG, Hongxing HUANG, Haikun LIN   +12 more
doaj   +1 more source

Research on directional drilling technology for superimposed “three zones” passing through goaf

Meitan kexue jishu, 2023
Guizhou has a large amount of coal resources, which have been mined for a long period of time, resulting in the formation of a large area of goaf. There is a large amount of coalbed methane resources in the goaf, but the exploitation and utilization rate
Yi LOU, Longjun LIANG, Jie CHEN, Linjie SHAO, Fuqin YANG, Wang YI   +5 more
doaj   +1 more source

Methane Planets and their Mass-Radius Relation

, 2015
Knowledge of both the mass and radius of an exoplanet allows us to estimate its mean density, and therefore its composition. Exoplanets seem to fill a very large parameter space in terms of mass and composition, and unlike the solar-system's planets ...
Helled, Ravit, Podolak, Morris, Vos, Eran   +2 more
core   +1 more source

Photoswitching Conduction in Framework Materials

Advanced Functional Materials, EarlyView.
This mini‐review summarizes recent advances in state‐of‐the‐art proton and electron conduction in framework materials that can be remotely and reversibly switched on and off by light. It discusses the various photoswitching conduction mechanisms and the strategies employed to enhance photoswitched conductivity.
Helmy Pacheco Hernandez, Stefan Hecht, Wolfgang Wenzel, Lars Heinke, Mariana Kozlowska   +4 more
wiley   +1 more source

Fracturing interference behavior and mechanism of deep coalbed methane horizontal wells in the Daning-Jixian Block

Meitan kexue jishu
In order to accurately understand the effects of fracturing interference on deep CBM horizontal wells, 18 groups of fracturing interference events and their effects on 18 disturbed wells and 13 interfering wells in Daning-Jixian block were systematically
Haiyan CHAO, Ze LI, Huaibin ZHEN, Lele GUO, Hui ZHANG   +4 more
doaj   +1 more source