Results 31 to 40 of about 723,633 (329)

Brittleness evaluation of main coal seams in Permian Taiyuan-Shanxi formations, Baode block, Ordos Basin: based on a convolutional neural network method

Shiyou shiyan dizhi
The coal seams of the Permian Taiyuan-Shanxi formations in the Baode block of the northeastern margin of the Ordos Basin have abundant coalbed methane resources.
Qingfeng ZHANG, Ziling LI, Jikun ZHANG, Shuai HAO, Xiaoguang SUN, Yanjie SHANG, Yun ZUO   +6 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

Engineering Deformation and Failure in Diamond Triply Periodic Minimal Surface Lattices via 3D Wall‐Thickness Grading

Advanced Engineering Materials, EarlyView.
The work demonstrates that strategic wall‐thickness grading in diamond triply periodic minimal surface lattices enables precise tuning of deformation and failure behavior under compression. Different gradation patterns guide how and where the structure collapses, improving energy absorption or promoting controlled brittle failure.
Giovanni Rizza, Danilo Bruson, Manuela Galati, Luca Iuliano   +3 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

A decision support tool for landfill methane generation and gas collection [PDF]

, 2015
This study presents a decision support tool (DST) to enhance methane generation at individual landfill sites. To date there is no such tool available to provide landfill decision makers with clear and simplified information to evaluate biochemical ...
Coulon, Frederic, Emkes, Harriet, Wagland, Stuart Thomas   +2 more
core   +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

Cu‐Based MOF/TiO2 Composite Nanomaterials for Photocatalytic Hydrogen Generation and the Role of Copper

Advanced Functional Materials, EarlyView.
HKUST‐1/TiO2 composite materials show a very high photocatalytic hydrogen evolution rate which increases as a function of the irradiation time until reaching a plateau and even surpasses the performance of the 1%Pt/TiO2 material after three photocatalytic cycles.
Alisha Khan, Marie Le Pivert, Alireza Ranjbari, Diana Dragoe, Daniel Bahena‐Uribe, Christophe Colbeau‐Justin, Christian Herrero, Dorota Rutkowska‐Zbik, Johnny Deschamps, Hynd Remita   +9 more
wiley   +1 more source