Results 81 to 90 of about 152 (101)

Extension mechanism and influencing factors of indirect fracturing fractures on coal seam roof

Meitan kexue jishu
Fractured soft and low permeability coalbed is commonly developed in China, which restricts the increase of single well gas production and industrial development of coalbed methane (CBM).
Yong LI, Tao CHEN, Xiaotian MA, Xiang WU
doaj   +1 more source

Magrath Store News (August 10, 1956)

, 1956
An archive of the Magrath Trading Store News.The University of Lethbridge Library received permission from the Wes Balderson to digitize and display this content.MAGRATH TRADING CQ STORE NEWS Phones Office 21 Hardware 34 Groceries 4 Dry Goods 124 ROYAL ...
Magrath Trading Store
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Magrath Store News (August 20, 1954)

, 1954
An archive of the Magrath Trading Store News.The University of Lethbridge Library received permission from the Wes Balderson to digitize and display this content.PHONES--OFFICE-21-HARDffARS 34-DRY GOODS 124 FRIDAY AUGUST 20th.
Magrath Trading Store
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Magrath Store News (November 15, 1995)

, 1995
An archive of the Magrath Trading Store News.The University of Lethbridge Library received permission from the Wes Balderson to digitize and display this content.MAGRATH NEWS Published Weekly since 1932 by The Magrath Trading Company 30 cents Wednesday ...
Magrath Trading Store
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0006

Items From Cooke's NEW WALNUTS 11c, tt. and Zme P t ft POUND UN.LEACHED NATURAL FLAVOR Thanksgiving Supplies Are Here CITRON ORANOE PEEL LEMON PEEL RAItlN.

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The Impact of Perforation on the Fracture Propagation of Horizontal Well Multistage Fracturing in the Roof of Broken Soft Coal Seams

Volume 3: Fluid-Structure Interaction; High Pressure Technology, 2022
Abstract Horizontal well multistage fracturing in the roof of low-permeability and broken soft coal seams has proven to be an effective technique to extract coalbed methane. However, fracture propagation behaviors under this technology vary significantly with different perforation patterns.
Xuejiao Li, Zhao Haifeng
exaly   +2 more sources

Study on Horizontal Well Indirect Fracturing Technology in the Gangue of Broken Soft Coal Seams for CBM Development

Middle East Oil, Gas and Geosciences Show, 2023
Abstract Crushed soft coal seams have the features of low mechanical strength and broken coal structure. Fracturing directly in broken soft coal seams, short and coarse fractures are formed and a large amount of coal powder is produced. In this study, horizontal well indirect fracturing technology in the gangue of crushed soft coal seams
Xuejiao Li, Haifeng Zhao, Chaowei Wang, Dongchenhao Wang, Wenjie Yao, Huaibin Zhen, Zongfei Wang   +6 more
openaire   +1 more source

Surface Pre-Grouting Borehole Arrangement and Division of the Broken Roof of the Lower Seam of a Bifurcated Coal Seam

Energy Exploration and Exploitation, 2023
Xiaorong Zhai, Ru Hu
exaly  

Macro and micro grouting process and the influence mechanism of cracks in soft coal seam

International Journal of Coal Science and Technology, 2021
Shaowei Liu, Jia Housheng, Liu Shaowei   +2 more
exaly  

Gob-Side Entry Retained with Soft Roof, Floor, and Seam in Thin Coal Seams: A Case Study

Sustainability, 2020
Zizheng Zhang, Min Deng, Shuai Yan
exaly