Emulsion shear bond enhanced cement
US11739247B1 · kind B1 · utility
8Cited by
0References
24Claims
0Family size
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Key dates
| Filing date | Feb 11, 2022 |
| Grant date | Aug 29, 2023 |
| Priority date | — |
| Expiry date | Feb 11, 2042 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2103/32
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A precursor cement slurry includes a cement powder, water, and an additive. The additive includes a cement bond enhancer and a non-aqueous fluid additive. The non-aqueous fluid additive is an internal phase and the cement bond enhancer stabilizes the non-aqueous fluid additive in the form of a Pickering emulsion within the precursor cement slurry. The cement bond enhancer is comprised of the reaction product of graphene oxide with an anchoring functionality. A method of forming the precursor cement slurry and a method of cementing an annular space within a wellbore are also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.