化工进展 ›› 2022, Vol. 41 ›› Issue (1): 382-390.DOI: 10.16085/j.issn.1000-6613.2021-0115

• 精细化工 • 上一篇    下一篇

SAGD稠油采出液高效分离中YM型破乳剂的合成及性能

王怿兴(), 杨敬一(), 胡春付, 徐心茹   

  1. 华东理工大学化工学院绿色能源化工国际联合研究中心,上海 200237
  • 收稿日期:2021-01-18 修回日期:2021-04-09 出版日期:2022-01-05 发布日期:2022-01-24
  • 通讯作者: 杨敬一
  • 作者简介:王怿兴(1994—),男,硕士研究生,研究方向为石油化学。E-mail:wangecustyx@163.com

Synthesis and performance of YM series demulsifiers in high-efficiency separation of SAGD heavy oil production liquid

WANG Yixing(), YANG Jingyi(), HU Chunfu, XU Xinru   

  1. International Joint Research Center of Green Energy Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
  • Received:2021-01-18 Revised:2021-04-09 Online:2022-01-05 Published:2022-01-24
  • Contact: YANG Jingyi

摘要:

以聚醚(YM)、马来酸酐(MA)、对苯乙烯磺酸钠(SSS)和丙烯酰氧乙基三甲基氯化铵(DAC)为原料,合成了YM系列产物,用于新疆油田蒸汽辅助重力泄油(SAGD)稠油采出液的高效分离。通过FTIR、1H NMR和GPC对合成产物的结构进行表征,并采用界面张力、zeta电位和背散射光强度分析的方法,探究了合成产物对SAGD采出液分离性能的影响。结果表明,YMA和YMB引入的酯基和苯磺酸钠基团可对稠油中沥青质起到分散作用,从而降低界面膜强度和界面张力;YMB引入的酰氧乙基三甲基氯化铵阳离子基团可降低SAGD采出液脱出水zeta电位绝对值;YM系列产物降低了SAGD采出液的稳定性,加入YM、YMA和YMB后,SAGD采出液背散射光强度分别降低了1.36%、4.52%和5.63%,其中YMB降低SAGD采出液稳定性的作用最强。为进一步提升SAGD稠油采出液分离效果,YMB与乙酸复合得到YMC。在优化SAGD采出液分离动态试验条件下,加入YMC能使SAGD采出液分离后达到显著的效果。

关键词: 蒸汽辅助重力泄油, 稠油, 采出液分离, 合成, 界面张力, zeta电位

Abstract:

A series of novel YM demulsifiers, synthesized by polyether(YM), maleic anhydride(MA), sodium styrene sulfonate(SSS), and acryloxyethyltrimethylammonium chloride(DAC), were applied for SAGD produced liquid separation of Xinjiang heavy oil. The structures of the products were characterized by FTIR、1H NMR, and GPC. The effect of products on the separation of SAGD produced liquid was investigated by interfacial tension, zeta potential, and backscattered light intensity analysis. The results showed that ester groups and sodium benzenesulfonate anionic groups in YMA and YMB weakened the binding strength between dispersion asphaltenes and reduced interfacial film strength and interfacial tension, which lead to a reduction of oil-water interfacial tension. The cationic group of acyloxyethyltrimethylammonium chloride in YMB dropped the absolute value of zeta potential of SAGD produced water. The backscattered light intensity of SAGD produced liquid decreased by 1.36%, 4.52% and 5.63%, respectively when adding YM, YMA and YMB, which meant YMB demulsifier had the best effect on reducing the stability of SAGD produced liquid. The YMC obtained by the combination of YMB and acetic acid had a better dehydration effect. Under the optimized separation conditions of SAGD produced liquid, a satisfactory separation result could be achieved with the addition of YMC.

Key words: steam assisted gravity drainage(SAGD), heavy oil, produced liquid separation, synthesis, interfacial tension, zeta potential

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