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针对长庆油田致密油藏低孔、低渗的特点，结合测试压裂分析结果与压裂液伤害机理，提出了活性水－线性胶－交联冻胶分段携砂的复合压裂技术，即用活性水和线性胶替代了前置液和低砂液体积比阶段的交联瓜胶，在保证携砂性能的前提下降低了瓜胶压裂液的使用量，减少了压裂液残渣对储层的伤害。利用该技术在长庆油田致密油藏进行施工应用，取得了较好的效果。“,”Based on the low porosity and low permeability of tight reservoir ,and on the test results and analysis of fracturing damage mecha-nism of fracturing fluid ,a composite fracturing technology is put forward ,in which active water and glue are used to replace the linear pre-pad fluid and crosslinked guar gum at the stage of low sand ratio .On the premise of ensuring the sand -carrying performance ,the amount of guar gum fracturing fluid used is reduced ,alleviating the damage of fracturing fluid residue to the reservoir .This technology application in tight oil reservoirs in Changqing Oilfield achieves good results .