烷基糖苷及其衍生物钻井液发展趋势

Progress of alkyl glucoside derivatives as drilling fluid

烷基糖苷(APG)应用到钻井液中具有抑制性、润滑性良好,易生物降解、无毒环保等优点,但APG体积分数须>35%才能充分发挥性能,导致APG钻井液成本较高。综述了国内外对解决烷基糖苷钻井液高成本问题的相关研究进展。国外开展了通过烷基糖苷与无机盐的复配来减少APG加量的研究,成为国外APG钻井液发展的主流方向;国内开展了通过烷基糖苷的改性来达到减小加量、降低成本的目的,主要得到了阳离子烷基糖苷(CAPG)、聚醚胺基烷基糖苷(NAPG)等改性产品,并形成了相应的钻井液体系。最后提出了烷基糖苷及衍生物钻井液的未来发展趋势。

Alkyi polyglycoside （APG） is applied to the drilling fluid due to its good inhibition, lubrication, biodegradability, non-toxic environmental protection, and so on. However, in order to have good performance in drilling fluid,the volume fraction of APG must be above 35% ,which results in high cost. The high cost problems of APG drilling fluid is overviewed in this paper. The abroad studies show that the reduction of APG amount by combination of alkyl glucoside and inorganic salts becomes the main development direction of APG drilling fluid. In contrast, the modification of alkyl glucoside to decrease the APG dosage is performed in China,leading to the glucoside derivatives such as cation alkyl sugar glucoside （CAPG）, polyether amine alkyl glucoside （NAPG）, etc, and the corresponding drilling fluid system. The future development trend of alkyl glucoside drilling fluid and derivatives are prospected as well.