摘要
用界面张力法和吸光光度法考察了胜利石油磺酸盐(SLPS)阴离子表面活性剂及其与非离子表面活性剂P1709复配体系的抗盐性能。结果表明,SLPS的耐盐性能与钠离子浓度关系不大,主要取决于钙离子浓度,在高钙条件下其界面活性及地层沉淀损失较大;而将0.3%SLPS与0.1%P1709复配后,复配体系界面张力降低约1个数量级,界面活性增加,复配体系吸光度降低70%以上,沉淀损失得到抑制;与非离子表面活性剂P1709复配使用,降低体系临界胶束浓度是提高SLPS抗盐性能的重要手段,也是扩大其在高盐油藏应用的有效途径。
The salt resistance of anionic surfactant （SLPS） and its compounding system containing non i onic surfactant（P1709） was studied by spectrophotometric method and interfacial tension method. Laboratory research results showed that the salt resistance of SLPS is mainly determined by the concentration of Ca2 ＋ rath er than Na ＋ , more precipitate formed and SLPS＇ s interracial activity became worse in higher concentration calcium solution. The results also showed that the mixture containing 0.3% SLPS and 0.1% P1709 had lower interracial tension and better interracial activity,with oil water interfacial tension reduced by 10l mN/m or der of magnitude;The absorbance of the system decreases by over 70% and less precipitate formed in the mix ture. Adding non ionic surfactant（P1709） to SLPS solution was an important way to enhance SLPS＇ s salt re sistance by reduicing the critical micelle concentration（CMC） of compounding system ,and this makes it pos sible to widen the application of SLPS in high salinity reservoirs.
出处
《精细石油化工进展》
CAS
2012年第11期17-20,共4页
Advances in Fine Petrochemicals
基金
国家科技重大专项"高温高盐油藏提高采收率技术"(2008ZX05011)
关键词
胜利石油磺酸盐界面张力
沉淀
临界胶束浓度
Shengli petroleum sulfonate
interracial tension
precipitate
critical micelle concentration
