Wells – Processes – Distinct – separate injection and producing wells
Patent
1979-05-09
1981-01-20
Novosad, Stephen J.
Wells
Processes
Distinct, separate injection and producing wells
166274, 166275, 252 855D, E21B 4322
Patent
active
042457009
ABSTRACT:
The oil recovery effectiveness of an enhanced oil recovery method comprising sequentially injecting into a subterranean formation, an aqueous, surfactant-containing fluid followed by an aqueous, hydrophilic, viscosity-increasing polymer-containing fluid, is improved by incorporating from 10 to 500 parts per million of an aromatic compound such as toluene in the aqueous polymer-containing fluid.
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Carter Walter H.
Nix Cedric A.
Kulason Robert A.
Novosad Stephen J.
Park Jack H.
Ries Carl G.
Suchfield George A.
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