| abstract |
The invention discloses a high-strength and high-toughness water blocking agent and a preparation method thereof. The technical scheme is: a certain amount of acrylamide, 2-acrylamido-2-methylpropanesulfonic acid and diethylene glycol diethylene are mixed The base ether is dissolved in distilled water, and prepared into a solution with a mass fraction of 25%. The pH value is adjusted to 7-8 with 25wt% sodium hydroxide solution, and ammonium persulfate, clay particles, and toughening agent are added, and the reaction is carried out at 60 °C. 4h to obtain high-strength and high-toughness water blocking agent. The high-strength and high-toughness water plugging agent is simple to prepare, has good strength and toughness, and can be widely used in the direction of profile control and water plugging in oilfields. |