摘要
针对碳酸盐岩油藏具有高温、高矿化度的特点,研制出适合该类型油藏三次采油用耐温耐盐型表面活性剂BHJ-2。考察了其耐温耐盐性、界面活性、润湿性能、吸附性能、洗油效率、驱油效率等;结果表明,BHJ-2耐温达140℃,耐盐达2.33×10~5mg/L,吸附损失为0.574 mg/g油砂,可将油-地层水-岩石接触角由亲油性109.6°转变为亲水性61.4°。在140℃高温条件下老化30 d后,界面活性和洗油效率基本不变,油水界面张力为0.576 m N/m,静态洗油效率达到83.7%,可提高驱替效率36.7%,研究表明,BHJ-2可适用于高温高矿化度条件的亲油性碳酸盐岩油藏。
In view of high temperature and salt of carbonate reservoirs,a novel temperature-resistant and salt-tolerant surfactant BHJ-2 was synthesized. The temperature-resistance and salt-tolerance performance,interfacial activity,ability of changing wettability,adsorption property,washing oil property and displacement efficiency were evaluated. The results showed that BHJ-2 has capacity of temperature-resistant 140 ℃ and salt-tolerant 2. 33 × 10~5 mg / L,respectively,reduce adsorption loss to0. 574 mg / g,change oil-formation water-rock contact angle from 109. 6° to 61. 4°. After aging for 30 days under temperature of 140 ℃,the oil-water interfacial tension and washing oil efficiency of BHJ-2 were almost unchanged,interfacial tension between BHJ-2 and oil was 0. 576 m N / m,washing oil efficiency under static condition was 83. 7%,enhancing the displacement efficiency by 36. 7%. BHJ-2 has a promising application in high temperature and salinity carbonate reservoirs with lipophilicity.
出处
《精细化工》
EI
CAS
CSCD
北大核心
2016年第1期98-104,共7页
Fine Chemicals
基金
"十二五"国家863计划(2013064301)
国家自然科学基金(51274210)~~
关键词
表面活性剂
耐温
耐盐
碳酸盐岩油藏
提高采收率
油田化学品与油品添加剂
surfactant
temperature-resistance
salt-tolerance
carbonate-reservoir
EOR
oil-field chemicals and petroleum additives
