Method of treating oil-bearing formations using molten sulfur insulating packer fluid
US4062405A · kind A · utility
1Cited by
11References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 22, 1976 |
| Grant date | Dec 13, 1977 |
| Priority date | — |
| Expiry date | Nov 22, 1996 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B36/003
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Molten elemental sulfur is used as an insulating packer fluid in injection wells for steam drive secondary recovery of petroleum from petroliferous formations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.