Self-healing durable cement
US10655045B2 · kind B2 · utility
2Cited by
6References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 25, 2019 |
| Grant date | May 19, 2020 |
| Priority date | — |
| Expiry date | Sep 25, 2039 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/14
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
According to at least one embodiment of the present description, a cement slurry includes 1% to 90% BWOC of a cement precursor material based on the total weight of the cement slurry; and from 1% to 40% BWOC of a swelling additive based on the total weight of the cement slurry. The swelling additive comprises at least one micronized rubber, at least one distillate, and at least one solvent-refined heavy paraffinic.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.