Repsol has been granted a patent for a cementing method that involves mixing a cement composition with water and applying an alternating magnetic field to set the cement slurry. The composition includes magnetic nanoparticles, enhancing its properties, with specific size requirements determined by advanced microscopy techniques. GlobalData’s report on Repsol gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Repsol, Photoelectrochemical water splitting was a key innovation area identified from patents. Repsol's grant share as of July 2024 was 56%. Grant share is based on the ratio of number of grants to total number of patents.
Cementing method using magnetic nanoparticles and alternating magnetic field
The granted patent US12024672B2 outlines a novel method of cementing that incorporates magnetic nanoparticles into a cement slurry. The method involves mixing a cement composition with magnetic nanoparticles, which are present in a weight range of 0.01% to 10% by weight of cement. These nanoparticles have a mean particle size between 10 nm and 50 nm, as determined by Transmission Electron Microscopy (TEM), and a crystallite mean size that is at least 80% of the mean particle size. The patent specifies that the nanoparticles can have a hydrophilic shell and may be magnetite nanoparticles. Additionally, the method includes the application of an alternating magnetic field at a frequency of 100±5 kHz for a duration ranging from 1 to 25 minutes.
The patent further details the characteristics of the magnetic nanoparticles, including their particle size distribution, which is defined by a logarithmic distribution with a full width at half maximum (FWHM) of 25% or lower. The cement composition can also include a retarder and is applicable for various uses, such as pavement foundations, maritime works, and the cementing of pipe strings in well bores. The claims emphasize the versatility of the cementing method and its potential applications in construction and infrastructure development, highlighting the innovative integration of magnetic nanoparticles to enhance cement performance.
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GlobalData’s Patent Analytics tracks patent filings and grants from official offices around the world. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
