| abstract |
The invention relates to the field of oil field chemicals, and discloses an acrylamide copolymer, a preparation method and application thereof. Wherein the acrylamide copolymer contains structural unit A, structural unit B and structural unit C, wherein said structural unit A is a structural unit shown in formula I, said structural unit B is a structural unit shown in formula II, said The structural unit C is a structural unit represented by formula III; and based on the total weight of the acrylamide copolymer, the content of the structural unit A is 43.5 to 98% by weight, and the content of the structural unit B is 0.6 to 98%. 39% by weight, the content of the structural unit C is 0.6-39% by weight. The acrylamide copolymer has good water solubility and thermal thickening effect, and is suitable for use as a thermal thickener for tertiary oil recovery in high-temperature and high-salt reservoirs. |