Keywords weak gel;plant gum amorphophallus;glucomannan;glucomannan/inorganic salt/sodium sulfite/water system;delayed gelation;gel breakdown;preparation;reservoir profiling/flooding agent;

• 弱凝胶;魔芋胶;葡萄甘露聚糖;葡萄甘露聚糖/无机盐/亚硫酸钠/水体系;延迟凝胶化;破胶;制备;调驱剂;