针对普通胍胶残渣含量高、易对地层造成损害这一问题 ,室内研制出了低残渣羟丙基胍胶。文中介绍了低残渣羟丙基胍胶的合成反应原理 ,研究了合成过程中相转移催化剂、醚化剂、碱量、反应温度、反应时间等因素对产品粘度和残渣含量的影响以及使用性能 ,最后提出了油田压裂用低残渣羟丙基胍胶的合成工艺技术条件。 Aiming at the problem that the content of common guar gum residue is high and it is easy to damage the formation, low-residue hydroxypropyl guar gum has been developed indoors. In this paper, the principle of synthesis of low-residue hydroxypropyl guar gum was introduced. The effects of phase transfer catalyst, etherifying agent, base amount, reaction temperature and reaction time on the viscosity and residue content of the product, Finally, the technical conditions for synthesis of low-residue hydroxypropyl guar gum for oilfield fracturing are proposed.