Milled basalt fiber reinforced Portland slurries for oil well applications

Martinelli, Antonio Eduardo; Paiva, Luanna Carla Matias; Ferreira, Irantécio Mendonça; Freitas, Júlio Cézar de Oliveira; Bezerra, Ulisses Targino

Milled basalt fiber reinforced Portland slurries for oil well applications

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dc.contributor.author	Martinelli, Antonio Eduardo
dc.contributor.author	Paiva, Luanna Carla Matias
dc.contributor.author	Ferreira, Irantécio Mendonça
dc.contributor.author	Freitas, Júlio Cézar de Oliveira
dc.contributor.author	Bezerra, Ulisses Targino
dc.date.accessioned	2021-02-22T13:29:15Z
dc.date.available	2021-02-22T13:29:15Z
dc.date.issued	2019-04
dc.description.resumo	The dispersion of short fibers to oil well Portland slurries may improve the compressive strength and fracture energy of the hardened cementing material. A study was carried out to investigate the effect of the addition of ball-milled basalt fibers (5% BWOC) to Portland slurries. Samples were prepared with and without silica flour (40% BWOC) in the composition and cured for 7 days under different Bottom Hole Static Temperatures (BHST): 80 °C (176 °F) and 300 °C (572 °F). The mechanical properties and the microstructure of the hardened pastes were evaluated by compressive strength tests, X-ray diffraction and scanning electron microscopy. The results showed that milling basalt fibers was a cost efficient method to adjust the length of the basalt wool fibers assuring slurry mixing and, therefore, adequate pumpability. The combined addition of silica flour and basalt fibers improved the fracture energy of samples cured at 80 °C, therefore below the strength retrogression temperature. Curing at 300 °C resulted in significant fiber consumption by pozzolanic reactions that could not be prevented by the addition of silica flour. Therefore, ball-milled basalt fibers can be a cost-efficient and environmental-friendly solution to improve the mechanical properties of oil well cement slurries used below the retrogression temperature	pt_BR
dc.identifier.citation	PAIVA, Luanna Carla Matias; FERREIRA, Irantécio Mendonça; MARTINELLI, Antonio Eduardo; FREITAS, Julio Cezar de Oliveira; BEZERRA, Ulisses Targino. Milled basalt fiber reinforced Portland slurries for oil well applications. Journal Of Petroleum Science And Engineering, [S.L.], v. 175, p. 184-189, abr. 2019. Elsevier BV. http://dx.doi.org/10.1016/j.petrol.2018.11.068. Disponível em: https://www.sciencedirect.com/science/article/abs/pii/S0920410518310647?via%3Dihub. Acesso em: 04 jan. 2021	pt_BR
dc.identifier.doi	10.1016/j.petrol.2018.11.068
dc.identifier.issn	0920-4105
dc.identifier.uri	https://repositorio.ufrn.br/handle/123456789/31581
dc.language	en	pt_BR
dc.publisher	Elsevier	pt_BR
dc.rights	Attribution 3.0 Brazil	*
dc.rights.uri	http://creativecommons.org/licenses/by/3.0/br/	*
dc.subject	Basalt fiber	pt_BR
dc.subject	Oil well cement	pt_BR
dc.subject	Portland cement	pt_BR
dc.subject	Silica flour	pt_BR
dc.title	Milled basalt fiber reinforced Portland slurries for oil well applications	pt_BR
dc.type	article	pt_BR