Cement slurries, cured cement and methods of making and use of these
US11732177B2 · kind B2 · utility
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16Claims
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Key dates
| Filing date | Nov 10, 2021 |
| Grant date | Aug 22, 2023 |
| Priority date | — |
| Expiry date | Nov 10, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/91
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Cement slurries, cured cements, and methods of making cured cement and methods of using cement slurries are provided. The cement slurries have, among other attributes, improved expanding capabilities and may be used, for instance, in the oil and gas drilling industry. The cement slurry comprises water, a cement precursor material, and an expanding agent. The expanding agent comprising at least a poly(lactic acid)-metal oxide nanocomposite. The metal oxide comprises MgO, CaO, or both, and the poly(lactic acid) comprises a carboxylic acid terminal group.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.