中高温油藏高效驱油微生物SZ2研究与应用
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TE357

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国家高技术研究发展计划(863计划)


Research and Application of High Efficiency Oil Displacement Microorganism SZ2 in Medium and High Temperature Reservoirs
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    摘要:

    针对胜利油田中高温油藏微生物驱油技术中培育高效驱油微生物问题,利用葡萄糖、蛋白胨、酵母粉、磷酸氢二钾、氯化钠培育出了高效驱油微生物SZ2。利用高温高压流变仪、棒状薄层色谱分析仪、旋转滴界面张力仪和动态接触角测量仪分析了微生物SZ2对原油黏度、族组成、油水界面性质、乳化性能、润湿性能的影响,并对微生物趋界面效应进行了考察。结果表明,微生物SZ2在60℃时使原油黏度由1197mPa·s降低至432.7mPa·s,降低了63.9%,常温(20℃)下使胶质、沥青质质量分数由70.34%下降至67.16% ,下降了4.5%,并能够明显改善油水界面性质,55℃下,对比去离子水,使得地层水(矿化度:10220 mg/L)-稠油(7945 mPa·s)界面张力由40.96mN/m降低至16.72mN/m,降低了59.18%,使接触角由中性润湿81.00°下降至亲水性20.28°,60℃下和原油作用10d即可使原油完全分散,多方面性能优于胜利油田现有驱油微生物S3,在胜利油田沾3区块现场实验期间,使油井综合含水率由96.1%降为89.1%,累计增产3288吨,效果较好,应用前景广阔。

    Abstract:

    In order to solve the problem of microbial flooding in Shengli Oil Field, the efficient microbial SZ2 was cultivated by using glucose, peptone, yeast extract, dipotassium hydrogen phosphate and sodium chloride. The effects of microbial SZ2 on the viscosity, composition, oil-water interface properties, emulsifying properties and wettability of crude oil were analyzed by high temperature and high pressure rheometer, bar thin layer chromatograph, spinning drop interfacial tensiometer and dynamic contact angle measuring instrument, and the interface effect of microorganisms was studied. The results showed that the microbial SZ2 reduced the viscosity of crude oil from 1197mPa·s to 432.7mPa·s at 60℃, and decreased 63.9 %, and the mass fraction of glial and asphaltene decreased from 70.34% to 67.16%, decreased by 4.5% under normal temperature(20℃). The interfacial tension of the formation water (salinity: 10220mg/L) and heavy oil (7945mPa·s) was reduced from 40.96mN/m to 16.72mN/m, which was 59.18% lower than that of deionized water at 55℃. The contact angle decreased from 81° to neutral 20.28° at 60°C and crude oil was completely dispersed for 10 days. The performance of the crude oil was better than that of Shengli Oilfield. In Shengli Oilfield, during the field test, the comprehensive moisture content of the oil wells was reduced from 96.1% to 89.1%, and the cumulative yield was 3288t. The effect was good and the application prospect was broad.

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戴振华,郭继香.中高温油藏高效驱油微生物SZ2研究与应用[J].精细化工,2017,34(12):

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  • 收稿日期:2017-02-20
  • 最后修改日期:2017-05-10
  • 录用日期:2017-05-26
  • 在线发布日期: 2017-11-10
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