Zobrazeno 1 - 10
of 19
pro vyhledávání: '"Gabriella Federer"'
Publikováno v:
Rudarsko-geološko-naftni Zbornik, Vol 37, Iss 2, Pp 1-11 (2022)
This study is investigating the possibility of using pinecones as additive materials to develop a water-based drilling mud. Pinecones are environmentally friendly agricultural wastes and have no practical applications. Therefore, this study is of gre
Externí odkaz:
https://doaj.org/article/09d0accf1e574f79910f88ae6f6f467f
Publikováno v:
Rudarsko-geološko-naftni Zbornik, Vol 37, Iss 5, Pp 23-38 (2022)
The main objective of this study is to enhance the poor performance of oil well cement in terms of mechanical properties by using pure polypropylene fibers. Polypropylene fibers were added in increasing concentrations from 0 to 0.1%, 0.3%, 0.5%, 0.7%
Externí odkaz:
https://doaj.org/article/cd41f8c78003423e992ff7bb872c0a04
Publikováno v:
Rudarsko-geološko-naftni Zbornik, Vol 37, Iss 2, Pp 13-21 (2022)
The objective of the study is to design a drilling fluid that prevents differential pressure pipe sticking tendency caused by drilling fluid with fly ash that is an industrial waste generated from the combustion of coal. To this end, drilling fluid s
Externí odkaz:
https://doaj.org/article/d4319b1f957246ccba04a3b28717ac2c
Autor:
Hani AL Khalaf, Gabriella Federer Kovacsne, Nagham Alhaj Mohammed, Gabor Horvath, Roland Docs
Publikováno v:
Heliyon, Vol 9, Iss 1, Pp e12975- (2023)
There have been many investigations to improve both the physical and mechanical properties of oil well cement using a wide range of materials. Most of these additives are expensive and practically ineffective. In this article, a comprehensive evaluat
Externí odkaz:
https://doaj.org/article/cd8eaba1ddcd42b0bfc9d54efb8cd6fc
Publikováno v:
Rudarsko-geološko-naftni Zbornik, Vol 36, Iss 5, Pp 1-12 (2021)
This study investigates the possibility of using rice husk ash as an additive to develop an environmentally friendly and low-cost drilling fluid system. Rice husk ash was added as an additive to water-based bentonite drilling fluids at different conc
Externí odkaz:
https://doaj.org/article/6938b5409282470c8cc4a1a7de31c8eb
Autor:
AL Khalaf, Hani, Kovacsne, Gabriella Federer, Mohammed, Nagham Alhaj, Horvath, Gabor, Docs, Roland
Publikováno v:
In Heliyon January 2023 9(1)
Publikováno v:
Volume: 6, Issue: 3 223-236
Natural and Engineering Sciences
Natural and Engineering Sciences
In this study, the usage of class F fly ash (brown coal) and class C fly ash (lignite) with increasing concentration in water based mud mainly composed of bentonite dispersion was investigated at ambient conditions. Experimental results indicate that
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2c2a6fade164b12fa9d5c30a16e4b5cc
https://doi.org/10.28978/nesciences.1036853
https://doi.org/10.28978/nesciences.1036853
Publikováno v:
Rudarsko-geološko-naftni zbornik
Volume 37
Issue 5
Volume 37
Issue 5
The main objective of this study is to enhance the poor performance of oil well cement in terms of mechanical properties by using pure polypropylene fibers. Polypropylene fibers were added in increasing concentrations from 0 to 0.1%, 0.3%, 0.5%, 0.7%
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::452fe03c39dc35f81f391536d9900b0c
https://hrcak.srce.hr/286719
https://hrcak.srce.hr/286719
Autor:
Mohammed, Nagham Alhaj, AL Khalaf, Hani, Kovacsne, Gabriella Federer, Yalman, Emine, Depci, Tolga
Publikováno v:
Petroleum & Coal; 2023, Vol. 65 Issue 1, p107-117, 11p
Publikováno v:
Rudarsko-Geolosko-Naftni Zbornik; 2022, Vol. 37 Issue 5, p23-38, 16p