Steam enhanced oil recovery method using branched alkyl aromatic

Details Steam enhanced oil recovery method using branched alkyl aromatic Steam enhanced oil recovery method using branched alkyl aromatic

1989-10-06

1991-04-09

Suchfield, George A.

Wells

Processes

Distinct, separate injection and producing wells

166273, 166294, 166309, 252 8554, E21B 4322, E21B 4324

Patent

active

050056441

ABSTRACT:
A method of enhanced oil recovery using foam to improve the effectiveness of steam to mobilize viscous crude, either for steam stimulation in a single well or for steam drive between wells. A new surfactant composition having branched alkyl aromatic sulfonates as the effective agent for the steam foamer is used because of its ability to foam in the presence of substantial pore volumes of residual oil and thereby mobilize significant amounts of producible oil by diverting steam to less-permeable zones.

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