Method of using water-superabsorbent polymer in production tubing and pipes
US7762332B2 · kind B2 · utility
7Cited by
19References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 30, 2006 |
| Grant date | Jul 27, 2010 |
| Priority date | — |
| Expiry date | Nov 6, 2028 |
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.