Well cementing method for improving well cementing quality by controlling hydration heat of cement slurry
US11926787B2 · kind B2 · utility
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13Claims
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Key dates
| Filing date | Apr 21, 2020 |
| Grant date | Mar 12, 2024 |
| Priority date | — |
| Expiry date | Aug 25, 2040 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/91
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A well cementing method is described for improving cementing quality by controlling the hydration heat of cement slurry. By controlling the degree and/or rate of hydration heat release from cement slurry, the method improves the hydration heat release during formation of cement with curing of cement slurry, improves the binding quality between the cement and the interfaces, and in turn improves the cementing quality at the open hole section and/or the overlap section. The cementing method improves cementing quality of oil and gas wells and reduces the risk of annular pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.