Zobrazeno 1 - 10
of 14 753
pro vyhledávání: '"Specific Energy"'
Autor:
Mohamed Hosin ElNeiri, Abdel Sattar Abdel Hamid Dahab, Abdulaziz Mohamed Abdulaziz, Khalid Mahmoud Abdelghany
Publikováno v:
Petroleum Research, Vol 9, Iss 4, Pp 673-685 (2024)
The application of laser in the drilling and perforation of oil wells can achieve great benefits such as reduced drilling costs and time with a higher rate of penetration (ROP) and elimination of casing necessity in oil and gas well drilling. This pa
Externí odkaz:
https://doaj.org/article/00e3036d49ac4e1f9d20b3681410e3e2
Publikováno v:
Underground Space, Vol 19, Iss , Pp 138-152 (2024)
The Sichuan-Xizang Railway is a global challenge, surpassing other known railway projects in terms of geological and topographical complexity. This paper presents an approach for rapidly profiling rock mass quality underneath tunnel face for the ongo
Externí odkaz:
https://doaj.org/article/c0dc8d7d8c774b859b7c621229a66c1a
Publikováno v:
대한환경공학회지, Vol 46, Iss 10, Pp 629-647 (2024)
Objectives Rapid industrialization has highlighted the importance of addressing environmental issues and the increasing demand for water supply. As a result, innovative solutions to improve water circulation management in both public and industrial s
Externí odkaz:
https://doaj.org/article/4c173b8e0f6e43dfae3289e8119f73c0
Publikováno v:
Zhongguo Jianchuan Yanjiu, Vol 19, Iss 5, Pp 238-244 (2024)
ObjectiveA method for calculating and selecting the minimum specific energy consumption working point is developed to solve the problem of high energy consumption in the short-distance slurry transport of dredgers.MethodsBased on the relevant models
Externí odkaz:
https://doaj.org/article/76c6767a6e544300b0613e61ae46f2c0
Publikováno v:
Geomechanics and Geophysics for Geo-Energy and Geo-Resources, Vol 10, Iss 1, Pp 1-13 (2024)
Abstract Rock-breaking specific energy model of bit is the key foundation of evaluation and optimization of downhole drilling condition, while some necessary parameters for the existing models is difficult to measure directly while drilling. Aiming t
Externí odkaz:
https://doaj.org/article/95b1cb0d30b6433bae8a7579a5467256
Publikováno v:
Journal of Applied and Computational Mechanics, Vol 10, Iss 4, Pp 694-709 (2024)
Flywheels used for energy storage may be assembled by press fitting or bonding of concentric rotor parts. During operation, each part is subjected to a superposition of stress fields associated with centrifugal loading and with contact at the compone
Externí odkaz:
https://doaj.org/article/34e0a2a0cedb48479bdc0fb167acc384
Publikováno v:
Alexandria Engineering Journal, Vol 104, Iss , Pp 434-450 (2024)
Gravelly soil strata exhibit heterogeneity and nonlinearity in their physical and mechanical properties, leading to volatile fluctuations of shield scraper force. Understanding the performance of shield scrapers in gravelly soils is significant for t
Externí odkaz:
https://doaj.org/article/1b71c54cc5be492a9485117bf42e3bbd
Publikováno v:
Underground Space, Vol 18, Iss , Pp 151-161 (2024)
High-pressure waterjet-assisted tunnel boring machine (WTBM) is an efficient method for improving the tunneling performance of a tunnel boring machine (TBM) and reducing the wear of its disc cutters in hard rock with high geostresses. Confining press
Externí odkaz:
https://doaj.org/article/ae86ea4d021a413bb88e7ed2cfd64800
Publikováno v:
مجلة جامعة كركوك للعلوم الزراعية, Vol 15, Iss 3, Pp 252-263 (2024)
This research study included evaluating the effect of patterns of distribution of chisel plow tines on field performance at different operating factors by studying three factors .The first is patterns of distribution of the chisel plow tines at three
Externí odkaz:
https://doaj.org/article/e872f00896a54bdfb67e4a3f77e7630e