Method for repressurizing an oil reservoir
A means and method are described of repressurizing an oil reservoir with a non-condensable elastic fluid having a specific gravity lighter than oil, which may be combined with hydrocarbon fluids to increase flowability of the oil. The repressurization fluid is injected in the production zone of the oil reservoir at a high temperature and pressure so that it flows upward into a region of entrapment resultant from primary and secondary oil recovery. The oil is driven into a trap position which is higher than the recovery wells. The repressurization fluid replaces the oil in the entrapment, causing it to flow downward against the pressure engendered by secondary recovery procedures to a point at which the producing well will be able to pump it. The repressurization fluid is generated in situ in a blast furnace, resulting in an inert gas. (1 claim)
- Assignee:
- TUL; EDB-81-089772
- Patent Number(s):
- US 3342259
- OSTI ID:
- 6160388
- Country of Publication:
- United States
- Language:
- English
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