为使一种改性胍胶能用于酸性压裂和CO2泡沫压裂，对其主要性能进行了评价。
For a type of modified guar gum being used in acidic and CO2-foam fracturing, its main properties is evaluated in this paper.
压裂返排液的主要成分是羟丙基胍胶及其它的有机添加剂，具有COD严重超标的污染特征。
Hydroxypropylguar gum and other organic additives are the predominant components of fracturing fluid recovery, which have excessive CODCr, the most important polluting characteristic of the sewage.
但该阳离子胍胶只适合配制弱酸性压裂液，建议今后对其进一步开展在强酸条件下的交联与应用研究。
However, the cationic guar only suitable for the preparation of weak acid fracturing fluid, its cross-linking and application properties in acid conditions should be further studied in future.
因此，开展对原始胍胶的改性研究，使其可在酸性环境中交联，并使其防膨性得以改善，具有重要的实际意义。
Therefore, it is important to do the research on the modification for the guar, to improve its anti-swelling effect, and so that it can be cross-linked in the acidic condition.
清洁压裂液不含任何聚合物，它不需要破胶剂、破乳剂、防腐剂等化学药剂，彻底解决了胍胶压裂液对地层的污染问题。
The clear fracturing fluid is free of polymer, and it does not need gel breaker, demulsifier, corrosion inhibitor and so on.
胍胶是目前国内油气田压裂改造使用较多的压裂液增稠剂，对一种改性胍胶的水不溶物含量、交联性能及耐温耐盐性能进行评价。
Therefore, in allusion to geological properties of strong water sensitivity of reservoir, compound fracturing technology of guanidine gum and clean fracturing fluid is selected preferentially.
胍胶是目前国内油气田压裂改造使用较多的压裂液增稠剂，对一种改性胍胶的水不溶物含量、交联性能及耐温耐盐性能进行评价。
Therefore, in allusion to geological properties of strong water sensitivity of reservoir, compound fracturing technology of guanidine gum and clean fracturing fluid is selected preferentially.
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