摘要
研究了脂肪醇醚硫酸钠AES/烷基苯磺酸盐SAS复配体系在高矿化度条件下与原油间的界面张力。结果表明:复配体系在高矿化度地层水中具有良好的溶解性,能在较宽的加量范围内(0.05%~0.70%)与原油形成超低界面张力;在优选的复配体系(总加量0.3%,m(AES)∶m(SAS)=1∶1.2)溶液中加入单一无机盐NaCl,界面张力先下降后升高,在60 000 mg/L NaCl溶液中界面张力可降低至10^(-4)mN/m;复配体系在Ca^(2+)浓度为200~800 mg/L时,界面张力可维持10^(-3)mN/m,适量增加AES比例能进一步改善复配体系抗盐能力;复配体系与石英砂混合吸附72 h后仍保持超低界面张力。表明该复配体系性能优良,满足高盐油藏开发需求。
The interfacial tension between aliphatic alcohol ether sodium sulfate（AES）/alkylbenzene sulfonate（SAS）compound system at high salinity condition and crude oil is studied.The results of study have shown that this compound system has good solubility in the highly mineralized formation brines and can form ultralow interfacial tension with crude oil in a wide addition range（0.05% to 0.70%）.The interfacial tension reduces first and then increases when a single inorganic salt NaCl is added to the solution of a compound system（total addition：0.3%,m（AES）：m（SAS）= 1：1.2）selected through optimization,and the interfacial tension can reduce to 10^-4 mN/m in the solution that contains 60 000 mg/L NaCl.The interfacial tension can be maintained at 10^-3 mN/m when Ca^2＋ concentration in the compound system is 200 to 800 mg/L,and the salt resistant capacity of the compound system can be further improved if the AES proportion is increased as required.Ultralow interfacial tension can be maintained still after the compound system and quartz sand are used for mixed adsorption for 72 h.It can be seen that this compound system has good performance and can satisfy the requirement for the development of high salinity reservoir.
作者
王健
吴一慧
金庭浩
邓虹
殷洪斌
殷洪新
WANG Jian;WU Yihui;JIN Tinghao;DENG Hong;YIN Hongbin;YIN Hongxin(Petroleum Engineering College of Yangtze University, Wuhan, Hubei 430100;Jianghan Oilfield Company of Sinopec Petroleum Engineering Geophysical Co. Ltd. , Qianjiang, Hubei 43310;Sinopec Jianghan Oilfield Company, Qianjiang, Hubei 433123)
出处
《精细石油化工进展》
CAS
2018年第1期14-17,共4页
Advances in Fine Petrochemicals
基金
长江大学横向科研项目"岩石薄片样品测试分析"(2014H1133)
关键词
脂肪醇醚硫酸钠
烷基苯磺酸盐
界面张力
协同效应
矿化度
aliphatic alcohol ether sodium sulfate
alkylbenzene sulfonate
interfacial tension
synergistic effect
high salinity
