Temperature-resistant and salt-resistant acrylamide polymer for fracturing and preparation process of temperature-resistant and salt-resistant acrylamide polymer

• Main Authors: ZHANG QI, ZHANG XIAOLONG, CAO FENG, LIU YONGXI, YANG FEI, NIE TIANYU, LI YONGFEI, DING SHUWEI, LU WEIWEI, XIE ZHONGRUI, GAO PENG, FU MINGQIU, CHEN HEYU
• Format: Patent
• Language: Chinese; English
• Published: 22.12.2023
• Subjects: ADHESIVES; CHEMISTRY; COMPOSITIONS BASED THEREON; DYES; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; POLISHES; THEIR PREPARATION OR CHEMICAL WORKING-UP

The invention relates to the technical field of oil field drilling, and discloses a temperature-resistant and salt-resistant acrylamide polymer for fracturing and a preparation process thereof, the acrylamide polymer is prepared by taking acrylamide, acrylic acid, a modified biomass derivative and a hyperbranched reagent as main raw materials through an inverse emulsion polymerization method, the modified biomass derivative has a unique spiral heterocyclic structure, so that the high-temperature resistance of the acrylamide polymer can be effectively improved, and meanwhile, the sensitivity of the acrylamide polymer to salt can be improved due to existence of a sulfonate group, so that the thickening effect and the temperature-resistant and salt-resistant effect of the acrylamide polymer can be effectively enhanced; the hyperbranched reagent is added, so that the prepared acrylamide polymer has a dendritic hyperbranched cross-linked structure, and the temperature resistance and salt resistance of the acrylami