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U.S. Department of Energy
Office of Scientific and Technical Information

Recovery of oil by a vertical miscible flood

Patent ·
OSTI ID:7309541

A vertical miscible recovery process for the recovery of oil from an oil-bearing reservoir is described. A miscible slug or blanket of solvent is established at the crest of the oil column or at the gas-oil interface and thereafter is displaced downward by the injection of a drive agent such as natural gas or methane wherein the reservoir is produced simultaneously from near the bottom of the oil column and also near the top of the oil column, thereby increasing the spreading rate of the solvent slug. 15 claims, 1 figure.

Assignee:
Texaco Inc.
Patent Number(s):
US 4022278
OSTI ID:
7309541
Country of Publication:
United States
Language:
English