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

Secondary recovery method

Patent ·
OSTI ID:6620939
A method of secondary recovery of oil from subterranean reservoirs is described wherein a fluid is used to drive the oil in the reservoir to production wells. This driving fluid is a mixture of water and colloidal silica. The driving fluid has a mobility ratio relative to the oil in the reservoir such that the driving fluid will maintain a flat face against the oil being driven to production wells and thus a high sweep efficiency of the reservoir will result. (6 claims)
Assignee:
Texaco Inc
Patent Number(s):
US 3817330
OSTI ID:
6620939
Country of Publication:
United States
Language:
English