Methods of using water-superabsorbent polymers to reduce heat transfer
US8136596B2 · kind B2 · utility
5Cited by
2References
24Claims
0Family size
Assignee
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Key dates
| Filing date | May 27, 2010 |
| Grant date | Mar 20, 2012 |
| Priority date | — |
| Expiry date | May 27, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K8/592
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A thermal insulating packer fluid contains at least one water superabsorbent polymer and optionally water and/or brine, and a viscosifying polymer. The composition is capable of inhibiting unwanted heat loss from production tubing or uncontrolled heat transfer to outer annuli. The viscosity of the composition is sufficient to reduce the convection flow velocity within the annulus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.