Portland Cement for the Cementing of Oil Wells Developed with the Aid of the Rietveld Refinement Method

Abstract:

The use of the Rietveld refinement method has been highlightened as essential in the characterization of polycrystalline materials. With the aid of this method, combined with the application of the X-ray diffraction, it was possible to develop a type of cement that can temporarily substitute the Portland cement for Oil well. This cement was developed from the mixture of Portland cements commonly found in the market. The cements were passed through various sieves, then characterized by X-ray diffraction, being identified the main phases (C₃A, C₄AF, C₃S and C₂S) and quantified by the Rietveld refinement method. With the values obtained in the quantification of the phases, a new cement was made through the method of linear programming. From the results, it was possible to conclude that the developed cement presented a composition (levels of the main phases) that satisfies the requirements of NBR 9831, mainly in relation to the low levels of C₃A.

• Periodical: Materials Science Forum (Volume 805)
• Pages: 350-355
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.805.350
• Online since: September 2014
• Authors: Danielle Nascimento Silva Oliveira, Gelmires Araújo Neves, Ulisses Targino Bezerra, Alexsandra C. Chaves, B. Silveira Lira
• Keywords: Portland Cement for Oil well, Rietveld Refinement, X-Ray Diffraction (XRD)

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