Wells – Processes – With indicating – testing – measuring or locating
Patent
1977-06-06
1978-11-14
Novosad, Stephen J.
Wells
Processes
With indicating, testing, measuring or locating
166273, 166274, 252 855D, E21B 4322
Patent
active
041251563
ABSTRACT:
The optimum aqueous surfactant system for forming an efficient multiphase microemulsion system in situ is determined by comparing the behavior of oil from the formation to be flooded with the behavior of simple hydrocarbons in an equilibration test with a standard surfactant system. Thereafter, salt concentration, equivalent weight of the sulfonate and/or alcohol solubility is varied based on criterion disclosed herein to arrive at the optimum system for recovery of the specific oil in question.
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Cash et al. SPE Paper 5813, "Modeling Crude Oils for Low Interfacial Tension," Mar. 22, 1976.
Novosad Stephen J.
Phillips Petroleum Company
Suchfield George A.
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