壬基酚聚氧丙烯聚氧乙烯醚磺酸盐的应用性能

Application Performance of Nonylphenol Polyoxypropylene Polyoxyethylene Oxide Sulfonates

合成了壬基酚聚氧丙烯聚氧乙烯醚磺酸盐(NPESO-3-4),采用高效液相色谱法检测了目标产物中原料的含量,同时测定了其表面张力、乳化能力、润湿性及模拟驱油率并与壬基酚聚氧乙烯醚磺酸盐的性能(NPESO-0-4)进行了比较。结果表明,与NPESO-0-4相比,NPESO-3-4降低表面张力的效率提高了;二者与胜利孤东原油之间的界面张力均在10-1mN/m数量级,但NPESO-3-4的乳化指数为1.23,而NPESO-0-4的乳化指数仅为0.51,而且NPESO-3-4能将油性表面润湿反转为中间润湿(84°～97°),模拟驱油率在NPESO-0-4的基础上提高了约7%。说明含氧丙烯链节的阴-非离子表面活性剂在三次采油中有很好的应用价值。

Nonylphenol polyoxypropylene polyoxyethylene oxide sulfonates （NPESO -3 -4 ） was synthesized, and the content of raw materials in the product was analyzed by high-performance liquid chromatography（ HPLC ）. The surface tension, emulsifying ability, wettability and mimic oil recovery efficiency of NPESO -3 -4 were measured and also compared with those of nonylphenol polyoxyethylene oxide sulfonates （NPESO -0 -4 ）. The results show that, for surfactants in aqueous solution, the NPESO -3 -4 caused a significant increase in the effectiveness of surface tension reduction than NPESO - 0 - 4. The interracial tension between NPESO - 3 - 4/NPESO - 0 - 4 aqueous solution and Shengli crude oil fell within the range of 10^-1 mN/m. The emulsifying index of NPESO- 0 - 4 aqueous solution could attain 1.23, while that of NPESO - 0 - 4 aqueous solution was only 0. 51. Moreover, NPESO - 3 - 4 could alter wettability of the surface from oil-wet to intermediate wet （ 84°-97°） , and, as the oil displacement agent, it could increase mimic oil recovery efficiency by more than 7% compared with that of NPESO -0 -4, which indicates that the anionie-nonionic surfactants with polyoxypropylene group are suitable for enhanced oil recovery.