改性淀粉降滤失剂的研究进展

Research Progress of Modified Starch Filtration Reducer

淀粉是来源广泛的一种自然资源,具有低成本、易降解、环境友好等特点,但由于存在热稳定性差、水溶性差等缺点,其在工业领域的应用受到了限制,研发改性淀粉对拓展其应用范围具有重要意义。改性淀粉降滤失剂由于其环保、价低、抗盐等特点在油田钻井液中得到了广泛应用。综述了醚化法、接枝共聚法、交联法合成改性淀粉的国内外研究进展,对其现场应用进行了评述,并指出了改性淀粉的发展方向。

Starch as a renewable and abundant natural resource derived from diverse sources,is recognized for its cost effectiveness,inherent degradability,and eco-friendliness.Nevertheless,its industrial application is constrained by inherent drawbacks,particularly its inferior thermal stability and limited water solubility properties.The development of modified starch is of great significance in expanding the scope of its application.Modified starch filtration reducers have been widely used in oilfield drilling fluids due to their environmentally friendly,low price and salt resistance.The domestic and international research progress of modified starch synthesized by etherification,graft copolymerization and cross-linking methods was reviewed,their field applications were commented,and the development direction of modified starch was pointed out.