羟丙基淀粉的合成及其降滤失性能  

Preparation and Low Fluid Loss Performance of Hydroxypropyl Starch

作　　者：姜翠玉 李亮 贾丹丹 马怡然 程明杰 苏明瑾 宋林花 

机构地区：[1]中国石油大学(华东)理学院,山东青岛266580 [2]中国石油大学(华东)化学工程学院,山东青岛266580

出　　处：《精细化工》2015年第11期1294-1300,共7页Fine Chemicals

摘　　要：探讨半干法、溶剂法制备羟丙基淀粉(HPS)的工艺条件,并分析比较了其降滤失性能。实验发现,半干法制备工艺是一种理想的工艺,适宜的反应条件是:反应温度55℃,反应时间8 h,m(Na OH)/m(淀粉)=0.014,m(环氧丙烷)/m(淀粉)=0.30,体系水含量31%,该条件下得到摩尔取代度(MS)为0.33的产品。半干法产品用量为1%在4%(均为质量分数)盐水泥浆中可抗温至150℃,而溶剂法产品仅抗温至140℃。在抗盐抗钙镁能力方面,半干法产品也表现出较大的优势,在140℃下抗盐至饱和,比溶剂法产品提高20%,抗钙至930 mg/L、抗镁至360 mg/L。进一步探讨了HPS的摩尔取代度与其降滤失性能的关系,当产品的摩尔取代度高于0.2时,产品具有较好的降滤失性能,产品的降滤失性能与其摩尔取代度以及合成工艺有关。The preparation techniques of hydroxypropyl starch（ HPS） by half-dry method and solvent method were introduced,and the low fluid loss performance was studied and compared. The results show that half-dry method is a good method. The optimum reaction conditions were as follows： reaction temperature 55 ℃,reaction time 8 h,the ratio of m（ sodium hydroxide） to m（ starch） 0. 014,the ratio of m（ propylene oxide） to m（ starch） 0. 30,water content in reaction system 31%,The MS of product was 0. 33. The product could resist temperature up to 150 ℃ in 4% Na Cl salt water muds,while the product made by solvent method only to 140 ℃. Compared with solvent method product at 140 ℃,it has excellent capacities of salts,and could be used in saturated-salt solution,the maximum content of Ca2 ＋and Mg2 ＋was 930 mg / L and 360 mg / L,respectively. Further studies show that the product have a good low fluid loss performance when MS is over 0. 2. The fluid loss performance of HPS is related to the MS and the synthesis process.

关 键 词：羟丙基淀粉 半干法 溶剂法 降滤失性能 钻井泥浆 油田化学品与油品添加剂 

分 类 号：TS235[轻工技术与工程—粮食、油脂及植物蛋白工程]