| abstract |
The invention relates to a hydrophobic association oil-displacement polymer and a preparation method thereof. The preparation raw material of the oil-displacement polymer comprises the following components: 210-260 parts by weight of acrylamide, 0.2-2 parts by weight of a hydrophobic monomer, and a surfactant 0.6-6 parts by weight, 0.05-0.5 parts by weight of structure regulator, 5-30 parts by weight of alkenyl sulfonic acid, 10-40 parts by weight of cationic monomer, 1-4 parts by weight of stabilizer, 30-60 parts by weight of sodium carbonate, 1-6 parts by weight of sodium hydroxide, 742-592 parts by weight of solvent, 0.001-0.05 parts by weight of molecular weight regulator and 0.001-0.5 parts by weight of initiator. The oil-displacement polymer prepared by using the above-mentioned components provided by the present invention will not decrease with the increase of the added salt concentration under certain conditions, but increase with the increase of the added salt concentration, so that the resistance of the oil-displacement polymer Salt performance is significantly enhanced. |