Miscible displacement process for petroleum reservoirs containing brine and oil
Patent
·
OSTI ID:6283595
It is proposed to use a process for miscible displacement consisting of a sequence of 2 solvent slugs preceding a water drive. The first solvent is miscible with the reservoir oil and limited miscibility with the connate water, and the second solvent is miscible with the first solvent and the reservoir water. This system is considered most desirable because it requires a smaller quantity of solvents. The results of several experiments indicate that the best solvent material to ues for the first slug is secondary butyl alcohol or a methyl ethyl ketone, and the preferred miscibilizing solvents are methanol, ethanol, isopropanol, and acetone. (6 claims)
- Assignee:
- TUL; EDB-81-108945
- Patent Number(s):
- US 3270811
- OSTI ID:
- 6283595
- Country of Publication:
- United States
- Language:
- English
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