Hydrophobically associated polymer-composite surfactant binary combination flooding system and method
A composite surfactant, binary composite flooding technology, which is applied in drilling compositions, chemical instruments and methods, etc., can solve the problems of reducing polymer viscosity, damaging formations, increasing oil displacement costs, etc., and achieves surface activity. The effect of increasing the concentration of the agent, effectively controlling the fluidity ratio, and reducing the amount of polymer
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Embodiment 1
[0042] Components and content of binary compound flooding system: (wt%)
[0043] Hydrophobically associating polymers: 0.15,
[0044] Composite surfactant: 0.05,
[0045] Water: 99.80
[0046] Components and contents of composite surfactants: (wt%)
[0047] Fatty acid diester disulfonate 50
[0048] Oleic acid diethanolamide 50.
Embodiment 2
[0050] Components and content of binary compound flooding system: (wt%)
[0051] Hydrophobically associating polymer: 0.15
[0052] Composite surfactant: 0.30
[0053] Water: 99.55
[0054] Components and contents of composite surfactants: (wt%)
[0055] Fatty acid diester disulfonate 60
[0056] Oleic acid diethanolamide 40.
Embodiment 3
[0058] Components and content of binary compound flooding system: (wt%)
[0059] Hydrophobically associating polymer: 0.15
[0060] Composite surfactant: 0.50
[0061] Water: 99.35
[0062] Components and contents of composite surfactants: (wt%)
[0063] Fatty acid diester disulfonate 70
[0064] Oleic acid diethanolamide 30.
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