Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Jurij Šporin"'
Autor:
Željko Vukelić, Jurij Šporin
Publikováno v:
Water, Vol 16, Iss 11, p 1572 (2024)
In accordance with the programme of closure works and the implementation of ecological spatial rehabilitation in the area of the Slovenian coal mine Trbovlje–Hrastnik (RTH), there is a great opportunity to exploit shallow geothermal energy from wat
Externí odkaz:
https://doaj.org/article/c795bfa3b8d941c88159e2356addf082
Publikováno v:
Energies, Vol 17, Iss 5, p 980 (2024)
A characteristic of the Pannonian Basin is its strong geothermal flow. Geothermal water is present in aquifers in the Miocene and Pliocene sediments of the Lendava, Murska Sobota, and Mura formations, as well as in pre-Neogene sedimentary rocks, at a
Externí odkaz:
https://doaj.org/article/d44ebcada9a949b38814c71c8d425124
Autor:
Željko Vukelić, Jurij Šporin
Publikováno v:
Minerals, Vol 14, Iss 1, p 77 (2024)
Ensuring safe conditions for mining coal under water-bearing sands in the Velenje coal mine depends on the designed parameters of hydrogeology, geomechanics and drainage. The purpose of the research is to predict and simulate the hydrostatic pressure
Externí odkaz:
https://doaj.org/article/e446bc282ac44b57b63a0382cbc21bbe
Publikováno v:
Energies, Vol 13, Iss 22, p 5949 (2020)
The breakdown of the drill bit or rapid decrease of the rate of penetration during the drilling process results in a delay in the progress of drilling. Scientists and engineers are increasingly focusing on research to extend the bit life and improve
Externí odkaz:
https://doaj.org/article/f48592553c5943c191cea844fda69c7d
Publikováno v:
Energies, Vol 9, Iss 9, p 702 (2016)
The complex hydro-geological situation, particularly in terms of groundwater, has been a constant threat to the mining carried out at the Velenje colliery since its inception. Of particular interest to the authors are the difficulties presented to th
Externí odkaz:
https://doaj.org/article/7d6c4c302fe0489d81b44988ebb2b93b
Autor:
Jurij Šporin
Publikováno v:
Materials and Geoenvironment, Vol 67, Iss 3, Pp 91-102 (2021)
The rapid drop in the penetration rate or failure of the drill bit during the drilling process delays the drilling process. In our investigation, the ‘in situ’ drilling parameters were monitored during the drilling process along with the roller c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::133e521dde52de27c0b40fe723edfb90
https://doi.org/10.2478/rmzmag-2020-0013
https://doi.org/10.2478/rmzmag-2020-0013
Publikováno v:
Coatings, Vol 11, Iss 1308, p 1308 (2021)
Coatings, vol. 11, no. 11, 1308, 2021.
Coatings
Volume 11
Issue 11
Coatings, vol. 11, no. 11, 1308, 2021.
Coatings
Volume 11
Issue 11
Roller cone drill bits are used in drilling larger diameter wells. The drilling efficiency of the roller cone drill bit depends on the wear rate of the materials that forms bit teeth, which crushes the rock at the bottom of the well. To prevent exces
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b0ac2c2e806b8b7337865f25abc5a7f4
https://www.mdpi.com/2079-6412/11/11/1308
https://www.mdpi.com/2079-6412/11/11/1308
Publikováno v:
Journal of Petroleum Science and Engineering. 173:1355-1367
Roller cone drill bit efficiency time during drilling depends, to a large extent, on the properties of the materials from which the components of the roller cone bit are made. The faster the roller cone bit is worn, due to the effects of the rock mat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::863c1fea0d3973828fbd6f75985f464c
https://doi.org/10.1016/j.petrol.2018.10.090
https://doi.org/10.1016/j.petrol.2018.10.090
Publikováno v:
Energies; Volume 13; Issue 22; Pages: 5949
Energies, Vol 13, Iss 5949, p 5949 (2020)
Energies, vol. 13, no. 22, 5949, 2020.
Energies, Vol 13, Iss 5949, p 5949 (2020)
Energies, vol. 13, no. 22, 5949, 2020.
The breakdown of the drill bit or rapid decrease of the rate of penetration during the drilling process results in a delay in the progress of drilling. Scientists and engineers are increasingly focusing on research to extend the bit life and improve
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::65bf3f93807cafa7ddc38624e6406654
Autor:
Željko Vukelić, Jurij Šporin
Publikováno v:
Materials and Geoenvironment, Vol 64, Iss 1, Pp 1-10 (2017)
In Slovenia, there is widespread use of structural drilling along with classical core drilling. Recently, however, the need has arisen for a highly effective core drilling method with the aid of which high-quality core might be obtained. In order to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::14de9d95800135539ff62b8b351e5942
https://doaj.org/article/ed759c4127da45448afd1e2c339e4146
https://doaj.org/article/ed759c4127da45448afd1e2c339e4146