Use of a fluid composition with delayed cross-linking for holding a casing inside a drill hole and method for reinforcing a drill hole
US8997867B2 · kind B2 · utility
2Cited by
18References
16Claims
0Family size
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Key dates
| Filing date | Jun 17, 2008 |
| Grant date | Apr 7, 2015 |
| Priority date | — |
| Expiry date | Oct 26, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2111/00706
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A cross-linkable composition with controlled cross-linking as a material is used for fixing and thermally insulating tubes used for casing in drill holes, especially oil drill holes, during exploitation operations, such as oil extraction, in the drill hole. The cross-linkable composition includes at least one diene polyol, at least one polyisocyanate, and at least one heat insulating liquid filler.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.