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摘要
为了解决昌吉井区稠油集输困难的问题,对昌吉井区的稠油集输工艺进行了研究,制定出一套适合该地区稠油集输的有效工艺。实验通过测试3种表面活性剂对该地区稠油乳化后的静态稳定性、流变性发现,乳化液稳定性依次为OP-10 > XP50 > AG-16;OP-10乳化后的黏度最好。温度低于42℃时,AG-16>XP50;高于42℃时,XP50>AG-16,因此选择OP-10为本区块掺活性水乳化降黏的主添加剂。通过参数优化实验发现,OP-10的添加量为质量分数0.75%,乳化温度为50℃,含水率为30%时,不仅能有效降黏,还能达到较好的经济效果。研究表明,稠油掺活性水乳化降黏是稠油集输中一种经济高效的集输工艺,具有乳化液黏度小、性能稳定、乳化剂用量少等优势。
Abstract
It is difficult to transport on ground the heavy oil produced in Changji well block.In order to solve this problem,the gathering and transport process in Changji well block is studied and an effective gathering and transport process suitable for the heavy oil produced in this block is developed.The static stability and rheological feature of the Changji-produced heavy oil emulsified by three kinds of surfactants respectively are tested.It is found that the emulsion emulsified by OP-10 has the best stability,that by AG-16 has the worst,and XP50 between the two.The viscosity of the emulsion emulsified by OP-10 is the best.AG-16 has better emulsifying effect than XP50 when the temperature is lower than 42℃,and the result becomes contrary when the temperature is higher than 42℃.Hence OP-10 is chosen as the major additive for blending active water to emulsify the heavy oil and reduce its viscosity.Through the parameter optimization experiments,it is found that when the dosage of OP-10 is 0.75 wt.%,the emulsifying temperature is at 50℃ and the moisture content is 30%,the heavy oil can be effectively emulsified and its viscosity can be reduced efficiently,furthermore,a good economic effect will be achieved too.This study shows that blending active water to emulsify heavy oil and reduce its viscosity is an economic and high effective technology for gathering and delivering heavy oil,which has advantages that emulsion exhibits lower viscosity and stable properties,and dosage of emulsifier is lower etc.
关键词
稠油集输
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乳化降黏
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活性水
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降黏剂
Key words
heavy oil gathering and transportation
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reducing viscosity via emulsifying
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active water
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viscosity reducing agent
Author summay
稠油掺活性水降黏集输工艺研究[J].
现代化工, 2018, 38(1): 217-219,221 DOI:10.16606/j.cnki.issn0253-4320.2018.01.052