Keywords low molecular mass guar gum;borate hydrogel;formulations;performance properties;hydrofracturing;gel breakdown;flown back fracturing fluid;recycle;Changqing oil fields;

• 低分子量瓜尔胶;水基硼冻胶;配方研究;应用性能;水力压裂;冻胶破胶;压裂返排液;回收利用;长庆油田;