Method of improving wellbore integrity and loss control
US11795368B2 · kind B2 · utility
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38Claims
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Key dates
| Filing date | Sep 16, 2021 |
| Grant date | Oct 24, 2023 |
| Priority date | — |
| Expiry date | Nov 10, 2041 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2208/08
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method for enhancing wellbore integrity and/or for sealing a wellbore by sealing formation or micro-annulus fractures in a wellbore. Such sealing can be at least partially accomplished by the use of timed expansion of an expandable sealant material that is placed a wellbore. The expansion of the expandable sealant material causes the cement surface or formation surface to be compressed, thereby creating a tight seal and/or eliminating annulus cracking, fracture, and/or gas channels in the wellbore. A degradable polymer can be used when restoration of the wellbore formation is desired.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.