E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
166/31
E21B 43/22 (2006.01) C09K 8/584 (2006.01)
Patent
CA 1041418
ABSTRACT OF THE DISCLOSURE In waterflooding operations loss of surfactant to the formation is reduced by following the surfactant injection with another surfactant injection before the flood.
241922
Smith Larry
Wilchester Harry L.
LandOfFree
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