| abstract |
The invention relates to an oil displacement agent and a preparation method thereof, in particular to a hydrophobic association polymer sulfonate oil displacement agent, which is composed of four monomers: acrylamide AM, sodium acrylate NaAA, sulfonate functional monomer NDS and hydrophobic monomer NIMA. The polymer sulfonate oil displacement agent provided by the present invention and its preparation method introduce long-chain hydrophobic groups, enhance the intermolecular association, and promote the water solubility and salt resistance of the polymer; introduce five-membered hetero The cyclic imidazoline structure can significantly enhance the rigidity of the polymer molecular chain, increase the viscosity, temperature resistance and shear resistance of the polymer; the introduction of sulfonate groups can greatly improve the water solubility and resistance Salt performance; the polymer oil displacement agent exhibits good temperature resistance, salt resistance and shear dilution resistance, and can better enhance oil recovery; the synthesis method is simple, the yield is high, the performance is stable, and it is green It is environmentally friendly and has good practical application prospects. |