Materials and methods of use as additives for oilwell cementing
US10487257B2 · kind B2 · utility
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70References
14Claims
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Key dates
| Filing date | Jul 19, 2017 |
| Grant date | Nov 26, 2019 |
| Priority date | — |
| Expiry date | Jul 19, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2103/50
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The embodiments described herein generally relate to methods and chemical compositions for use with cementing processes. In one embodiment, a composition is provided comprising a random tetracopolymer having the formula styrene-butadiene-acrylic-fumaric acid, a polyvinyl acetate, and a nonionic surfactant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.