| abstract |
The invention relates to the field of oil field profile control and water shutoff, and discloses a polymer with water shutoff profile control performance and its preparation method and application. The polymer contains a structural unit A, a structural unit B and a structural unit C, and the structural unit A is composed of acrylamide body, structural unit B is provided by itaconic acid monomer, and structural unit C is provided by a monomer having the structure of formula (1); based on the weight of the polymer, the content of structural unit A is 60-98% by weight, and the The content of the structural unit B is 1-39% by weight, and the content of the structural unit C is 1-39% by weight; In formula (1), R 1 , R 2 , and R 3 are each independently H, C1-C12 alkyl, C6-C12 substituted or unsubstituted aryl; R 4 is C1-C12 Alkyl, C6-C12 substituted or unsubstituted cycloalkyl, C6-C12 substituted or unsubstituted aryl. |