Temperature-resistant anti-swelling clay stabilizer and preparation method thereof

• Main Authors: QI HAIHUA, SUN CHUNTONG, SUN YONGQIANG, REN HAINING
• Format: Patent
• Language: Chinese; English
• Published: 04.07.2023
• Subjects: ADHESIVES; CHEMISTRY; DYES; HETEROCYCLIC COMPOUNDS; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; ORGANIC CHEMISTRY; PAINTS; POLISHES

The invention belongs to the technical field of oilfield development, and particularly relates to a temperature-resistant anti-swelling clay stabilizer and a preparation method thereof. The preparation method comprises the following steps: adding piperazine, a solvent and 1, 12-dibromododecane into a four-neck flask, stirring and dissolving, stirring, reacting and heating, adjusting the pH value, and cooling to 40 DEG C or below after the reaction is finished; adding sodium chloroethanesulfonate into the four-neck flask, stirring and dissolving, heating and refluxing, and carrying out reduced pressure distillation to obtain a crude product; and recrystallizing the crude product, and drying to obtain the product clay stabilizer. The clay stabilizer has the characteristics of simple preparation process, low cost, good anti-swelling effect and good temperature resistance. Therefore, the method can be widely applied to the technical field of oil layer protection. 本发明属于油田开发技术领域，具体涉及一种耐温型防膨粘土稳定剂及其制备方法。所述制备方法：在四口烧瓶中