Method and apparatus for recovering viscous petroleum from tar sand
US4248302A · kind A · utility
75Cited by
10References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 26, 1979 |
| Grant date | Feb 3, 1981 |
| Priority date | — |
| Expiry date | Apr 26, 1999 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/305
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method of recovering viscous petroleum from tar sand formations utilizing a deviated steam injection well with pump-down (through the flow line) completion. The steam injection well may use side pocket mandrels with constant flow or orifice regulators to control steam injection rates into the surrounding viscous petroleum formation. A plurality of pumping wells are situated along the drill path of the steam injection well and substantially above injection points for recovery of the fluidized petroleum.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.