Method for enhanced recovery of viscous oil deposits
US5826655A · kind A · utility
223Cited by
12References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 25, 1996 |
| Grant date | Oct 27, 1998 |
| Priority date | — |
| Expiry date | Apr 25, 2016 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/24
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Methods and apparatus for enhanced and improved viscous oil recovery are disclosed. A horizontal well is drilled through the viscous oil formation. A specially designed steam stinger is used to inject steam substantially uniformly into the entire horizontal extent of the well borehole without direct steam impingement on the production liner in the viscous oil formation. Heat from the steam mobilizes and lowers the viscosity of the heavy crude wherein the crude is then produced to the surface via conventional lift arrangements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.