Method for thermally insulating wellbores
US4296814A · kind A · utility
20Cited by
6References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 18, 1980 |
| Grant date | Oct 27, 1981 |
| Priority date | — |
| Expiry date | Jul 18, 2000 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B36/003
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Methods and apparatus for insulating a well bore to reduce heat transfer between fluids flowing through the well bore and surrounding formations wherein a heat activated gel-forming fluid having heat insulating properties when gelled is introduced into the annular space between the well bore and the tubing string contained therein and caused to be gelled.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.