E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
166/31
E21B 43/22 (2006.01)
Patent
CA 1145248
OIL RECOVERY METHOD UTILIZING A SURFACTANT SLUG DRIVEN BY WATER OF A CONTROLLED SALINITY (D#74,785-F) ABSTRACT OF THE DISCLOSURE The efficiency of a low tension surfactant flooding program is improved by first determining the upper and lower boundaries for the range of injected water salinities, that, when intermingled with the injected aqueous surfactant slug will enable the surfactant to resist partitioning into an oil and/or emulsion phase and thereby continue to operate with maximum effectiveness. The water in the driving slug is formulated to fall within the specified salinity boundaries and is then injected at the appropriate time in the sequence of steps in the oil recovery operation. -I-
368041
Morse Everett W.
Satter Abdus
Gowling Lafleur Henderson Llp
Texaco Development Corporation
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