CO2 oil displacement method adopting amidino compound
A technology of amidine compound and oil displacement method, which is applied in the direction of chemical instruments and methods, drilling compositions, production fluids, etc., can solve problems such as low efficiency, difficult injection, and large adsorption loss of surfactants, so as to improve recovery Yield, lower interfacial tension, lower minimum miscibility pressure
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Embodiment 1
[0031] Components and content of miscible pressure regulator:
[0032] Surfactant A (R 1 =-C 12 h 25 ; 2 =-CH 3 ; 3 =-CH 3 ; 4 =-CH 3 ): 100;
[0033] Use concentration: 1.0% (regulator in CO 2 mass concentration in);
[0034] Crude oil: provided by Jiangsu Oilfield.
Embodiment 2
[0036] Components and content of miscible pressure regulator:
[0037] Surfactant A (R 1 =-C 12 h 25 ; 2 =-CH 3 ; 3 =-CH 3 ; 4 =-CH 3 ): 100;
[0038] Use concentration: 1.5% (regulator in CO 2 mass concentration in);
[0039] Crude oil: provided by Jiangsu Oilfield.
Embodiment 3
[0041] Components and content of miscible pressure regulator:
[0042] Surfactant B (R 1 =-C 16 h 33 ; 2 =-CH 3 ; 3 =-CH 3 ; 4 =-CH 3 ): 100;
[0043] Use concentration: 1.0% (regulator in CO 2 mass concentration in);
[0044] Crude oil: provided by Jiangsu Oilfield.
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