AVALIAÇÃO DE PASTAS DE CIMENTO PORTLAND FORMULADAS COM CP II F E CINZA DE CARVÃO MINERAL VISANDO A CIMENTAÇÃO DE POÇOS DE PETRÓLEO
DOI:
https://doi.org/10.46421/entac.v17i1.1872Palavras-chave:
Oil well cementing, Coal ash, Portland cement slurriesResumo
Portland cement slurries formulated with cements commonly used in civil construction don’t fully meet the normative requirements of the API (American Petroleum Institute), especially about the mechanical properties, due to the composition characteristics and properties required for oil wells cementing. Due to these characteristics, in Brazil, specific Portland cements are used for oil wells, such as CPP Class G and CPP Especial Class. The research sought to evaluate a reliable alternative of cement slurries formulated with CPII F cement, with great availability in the market, with partial substitution of the cement by coal burning ashes to 5% and 10%, chosed for modifying the microstructure and the resistance of the slurries. The ash comes from the Pecém-CE thermoelectric plants, which represents an environmental liability due to the provision in patios of accumulation of this industrial waste. Initially, the chemical and microstructural cement and the ashes were characterized as the pozzolanic activity. Subsequently, the technological tests required by NBR 9831/2006 and API ASPEC / 2010 were carried out for the cementation of oil wells. It is concluded that the formulated slurries presented the possibility of cementing applications of shallow wells.
Referências
API. API SPEC 10A: Specification for cements and materials for well cementing API
SPEC 10A. Usa: Api, 2009.
API. RP 10B: Recommended pratice for testing well cements. Houston: Api, 2003.
ASSOCIAÇÃO BRASILEIRA DE NORMAS TÉCNICAS. NBR 11578: Cimento Portland
Composto. Rio de Janeiro, 1991. 5 p.
ASSOCIAÇÃO BRASILEIRA DE NORMAS TÉCNICAS. NBR 9831: Cimento Portland
destinado à cimentação de poços petrolíferos - requisitos e métodos de ensaio. Rio
de Janeiro, 2006. 36 p.
BALTHAR, Vivian Karla Castelo Branco Louback Machado. Caracterização físicoquímica
e mecânica de pastas de cimento leves e fibrosas para poços de
petróleo. Tese Dsc., COPPE, UFRJ, Rio de Janeiro, RJ, Braisl, 2010.
BASSIONI, Ghada; ALI, Mohammed M. Studying the physico-chemical properties of
commercially available oil-well cement additives using calorimetry. Journal Of
Thermal Analysis And Calorimetry, Amsterdã, v. 111, n. 1, p.295-303,2013.
BELÉM, Francisco Aldemir Teles. Desenvolvimento de pastas cimentantes utilizando
cimento Portland composto para cimentação de poços de petrólíferos. Dissertação
Msc., PPGCEP, Natal, RN, Brasil, 2011.
CHOOLAEI, M., RASHIDI, A.M., ARDJMAND, M., YADEGARI, A., SOLTANIAN, H. The
effect of nanosilica on the physical properties of oil well cement. Materials Science
and Engineering. n.638, p. 288-294, 2012.
COOK, R.; LAKE, L. W.; MITCHELL, R.F. Cementing. Petroleum handbook, drilling
engineering. Volume 2. Richardson, Texas. Estados Unidos da América, SPE, 2006.
HUI, Li et al. Microestructure and performance of fly ash micro-beads in cementitious
material system. Construction And Building Materials, Amsterdã, v. 52, p.422-427,
LIU, Huajie et al. The application of coated superabsorbent polymer in well cement
forplugging the microcrack.Construction And Building Materials, Amsterdã, n. 104,
p.72-84, 2016.
MIRANDA, C.R. Pasta de cimento Portland para poços de petróleo – processo de
formulação, propriedades reológicas, resistência mecânica e química. Tese Dsc.,
DCTIME, Rio de Janeiro, RJ, Brasil, 2008.
NELSON, E. B. Well cementing. Houston: Dowell Schlumberger Educational Services,
SABEDOT, S.; SUDSTRON, M. G.; BOER, S. C.; SAMPAIO, C. H.: DIAS, R. G. O.;
RAMOS,C.G. Caracterização e aproveitamento de cinzas de combustão de carvão
mineral gerados em usinas termelétricas. Anais do 3° Congresso Brasileiro de Carvão
Mineral. Gramado. 2011.
