一种晶核型促凝抗冻剂、其制备方法及极地固井水泥浆

本发明公开一种晶核型促凝抗冻剂、其制备方法及极地固井水泥浆。该晶核型促凝抗冻剂，其原料按重量份计，包括：晶核材料3～4份、抗冻胶乳3～4份、杀菌剂0～1份、有机添加剂8～10份和水200～300份。本发明的晶核型促凝抗冻剂耐寒可达-25℃以下，应用到极地固井水泥浆，使得水泥浆的抗冻性更好、耐寒性更好，同时使得制备的水泥浆具有早强、防气窜的效果，浆体稳定性好，解决了目前现场的环空窜流的问题，满足极地固井作业条件。 The invention discloses a crystal nucleus type coagulation-promoting antifreeze agent, a preparation method thereof and polar well cementation cement slurry. The crystal nucleus type coagulation-promoting antifreeze agent comprises the following raw materials in parts by weight: 3-4 parts of a crystal nucleus material, 3-4 parts of antifreeze latex, 0-1 part of a bactericide, 8-10 parts of an organic additive and 200-300 parts of water. The crystal nucleus type coagulation-promoting antifreeze agent can resist the cold of-25 DEG C or below; and when the crystal nucleus type coagulation-promoting antifreeze agent is applied to the polar well cementation cement slurry, the freezing resistance and the cold resistance of the cement slurry are better, meanwhile, the prepared cement slurry has the effects of ea