The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 02, 2024
Filed:
Dec. 07, 2020
Repsol, S.a., Madrid, ES;
María Ángeles González Fernández, Móstoles, ES;
Ricardo Bezerra De Melo, Móstoles, ES;
Luisa María Fraga Trillo, Móstoles, ES;
Sabino Veintemillas Verdaguer, Madrid, ES;
Álvaro Gallo Córdova, Madrid, ES;
María Del Puerto Morales Herrero, Madrid, ES;
REPSOL, S.A., Madrid, ES;
Abstract
Methods of cementing, cementing compositions made from the methods, and articles manufacturable by the cementing compositions are disclosed. The method can include mixing a cement composition and water to make a cement slurry and applying to the cement slurry an alternating magnetic field of from 25 mT to 60 mT at a frequency from 50 kHz to 200 kHz in order to set the cement slurry. The cement composition can have a cement and an amount of magnetic nanoparticles from 0.01 wt % to 10 wt % relative to the amount of cement (0.01% to 10% BWOC). The magnetic nanoparticles can have a mean particle size determined by Transmission Electron Microscopy (TEM) from 10 nm to 50 nm and a crystallite size determined by the Scherrer equation which is at least an 80% the mean particle size.