Method and composition for curing lost circulation
US8479817B2 · kind B2 · utility
6Cited by
4References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 23, 2008 |
| Grant date | Jul 9, 2013 |
| Priority date | — |
| Expiry date | Jan 22, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2208/08
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A system for curing lost circulation is made of fibers and a material able to stick fibers in a network when activated. Such activation can be temperature or pH change or both. The fibers can be metallic amorphous fibers, metallic non-amorphous fibers, glass fibers, carbon fibers, polymeric fibers and combinations thereof. The material can be a fiber coating or an additional material, for example polyvinyl alcohol, polyurethane and heat activated epoxy resin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.