CN108624314A - 一种以脑磷脂为原料制备稠油降凝剂的方法 - Google Patents
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Abstract
本发明涉及一种由脑磷脂、甲基丙烯酸缩水甘油酯和乙酸乙烯酯为主要原料制备稠油降凝剂的方法。本发明首先以脑磷脂为原料,将其与丙烯酸缩水甘油酯发生醚环取代开环反应,生成含脑磷脂的大分子单体,然后再将该大分子单体与乙酸乙烯酯按1∶5的摩尔比聚合,制备出一种含两种单体的共聚物。该聚合物具有显著的降低蜡质原油凝点的能力,制备过程简单,工艺可靠。
Description
技术领域
本发明属油田采油助剂领域,特别是涉及一种由脑磷脂(DSPE:1,2-二硬酯酸-3-磷酯酰乙醇胺)、甲基丙烯酸缩水甘油酯和乙酸乙烯酯为主要原料来制备稠油降凝剂的方法。
背景技术
国内多数油田已经进入中后期开发阶段,伴随着稠油开采量的不断增加,高凝点、流动性差的特点给原油开采和输送带来了极大困难,而含蜡稠油开发的关键在于如何降低原油凝点、改善其流动性。虽然现有技术中已有各种降凝剂,如聚乙烯-乙烯乙酸酯、聚丙烯酸十八酯等,但在油田生产中仍然需要更多高效的降凝剂。
脑磷脂分子中含有两条烷基疏水链,与原油中的石蜡分子结构相似,将含有脑磷脂分子结构的大分子嵌入原油的蜡微晶中,将破坏石蜡微晶中疏水烷烃长链的有序排列,从而消除石蜡微晶的生成,降低含蜡原油的凝固点。
本发明以脑磷脂、甲基丙烯酸缩水甘油酯和乙酸乙烯酯为主要原料,制备的降凝剂可以显著降低蜡质原油的凝点,阻止原油中石蜡在井筒内和输油管道中因温度降低而凝聚。
发明内容
本发明首先以脑磷脂为原料,将其与丙烯酸缩水甘油酯发生醚环取代开环反应,生成含脑磷脂的大分子单体,然后再将该大分子单体与乙酸乙烯酯按1∶5的摩尔比聚合,制备出一种含两种单体的共聚物。该聚合物具有显著降低蜡质原油凝点的能力,制备过程简单,工艺可靠。
具体实施方式
实施例1
(1)将0.01mol甲基丙烯酸缩水甘油酯和100ml苯加入250ml三口反应瓶中,混合均匀,升温至60℃,然后缓慢滴加含0.01mol脑磷脂的苯溶液50ml和3.00g吡啶,需1小时,于60℃保温反应3小时,停止加热,得浅黄色透明粘性液体,冷却至室温待用;
(2)往上述(1)的反应瓶中加入0.025mol乙酸乙烯酯,通入氮气15分钟,升温至60℃,用滴液漏斗缓慢滴入再滴加0.025mol乙酸乙烯酯和含0.20g过氧化苯甲酰的苯溶液10ml,需2小时,滴完后,继续保温反应3小时,得到浅黄色粘性液体产物。
实施例2
原油样品分别取自于胜利油田、大港油田和吐哈油田的9种含蜡脱水原油,用DYH-201A凝点测定仪(大连雨禾石油仪器有限公司),按国标GB/T510-83分别测定其凝点。将实施例1中所制备的产物配制成0.10%浓度的甲苯溶液,备用。分别取上述含蜡原油样品100g,加入0.05g 0.10%药剂浓度的甲苯溶液(5ppm),于60℃温度下搅拌均匀,测定药剂对不同凝点原油的降凝能力。按照上述同样方法,分别测定加药量为0.1g(10ppm)、0.3g(30ppm)、0.5g(50ppm)的原油的凝点,结果见表1至表4。
表1 加药量为5ppm对不同凝点原油的降凝效果
原油样品 | 原始凝点,℃ | 处理后凝点,℃ | 凝点降低值,℃ |
胜利1# | -2.0 | -7.6 | 5.6 |
胜利2# | 17.5 | 10.3 | 7.2 |
胜利3# | 24.0 | 15.5 | 8.5 |
大港1# | 7.3 | 1.0 | 6.3 |
大港2# | 26.0 | 17.2 | 8.8 |
大港3# | 37.5 | 28.1 | 9.4 |
吐哈1# | 9.3 | 3.3 | 6.0 |
吐哈2# | 25.8 | 18.3 | 7.5 |
吐哈3# | 38.6 | 30.5 | 8.1 |
表2 加药量为10ppm对不同凝点原油的降凝效果
原油样品 | 原始凝点,℃ | 处理后凝点,℃ | 凝点降低值,℃ |
胜利1# | -2.0 | -8.3 | 6.3 |
胜利2# | 17.5 | 8.0 | 9.5 |
胜利3# | 24.0 | 13.7 | 10.3 |
大港1# | 7.3 | -1.6 | 8.9 |
大港2# | 26.0 | 15.8 | 10.2 |
大港3# | 37.5 | 26.8 | 10.7 |
吐哈1# | 9.3 | 0.3 | 9.0 |
吐哈2# | 25.8 | 15.2 | 10.6 |
吐哈3# | 38.6 | 26.2 | 12.4 |
表3 加药量为30ppm对不同凝点原油的降凝效果
原油样品 | 原始凝点,℃ | 处理后凝点,℃ | 凝点降低值,℃ |
胜利1# | -2.0 | -10.9 | 8.9 |
胜利2# | 17.5 | 6.1 | 11.4 |
胜利3# | 24.0 | 11.2 | 12.8 |
大港1# | 7.3 | -2.2 | 9.5 |
大港2# | 26.0 | 14.0 | 12.0 |
大港3# | 37.5 | 24.4 | 13.1 |
吐哈1# | 9.3 | -2.4 | 11.7 |
吐哈2# | 25.8 | 13.2 | 12.6 |
吐哈3# | 38.6 | 24.1 | 14.5 |
表4 加药量为50ppm对不同凝点原油的降凝效果
原油样品 | 原始凝点,℃ | 处理后凝点,℃ | 凝点降低值,℃ |
胜利1# | -2.0 | -12.5 | 10.5 |
胜利2# | 17.5 | 3.9 | 13.6 |
胜利3# | 24.0 | 8.1 | 15.9 |
大港1# | 7.3 | -4.0 | 11.3 |
大港2# | 26.0 | 10.3 | 15.7 |
大港3# | 37.5 | 20.9 | 16.6 |
吐哈1# | 9.3 | -4.4 | 13.7 |
吐哈2# | 25.8 | 9.9 | 15.9 |
吐哈3# | 38.6 | 21.1 | 17.5 |
Claims (1)
1.一种由脑磷脂、甲基丙烯酸缩水甘油酯和乙酸乙烯酯为主要原料来制备稠油降凝剂的方法,包括下列步骤:
(1)将0.01mol甲基丙烯酸缩水甘油酯和100ml苯加入250ml三口反应瓶中,混合均匀,升温至60℃,然后缓慢滴加含0.01mol脑磷脂的苯溶液50ml和3.00g吡啶,需1小时,于60℃保温反应3小时,停止加热,得浅黄色透明粘性液体,冷却至室温待用;
(2)往上述(1)的反应瓶中加入0.025mol乙酸乙烯酯,通入氮气15分钟,升温至60℃,用滴液漏斗缓慢滴入再滴加0.025mol乙酸乙烯酯和含0.20g过氧化苯甲酰的苯溶液10ml,需2小时,滴完后,继续保温反应3小时,得到浅黄色粘性液体产物。
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CN110776607A (zh) * | 2019-10-12 | 2020-02-11 | 青岛大学 | 一种新型活性共聚物高凝原油驱油剂的制备方法 |
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SU1447842A1 (ru) * | 1979-05-31 | 1988-12-30 | Феб Леуна-Верке "Вальтер Ульбрихт" (Инопредприятие) | Улучшение свойств т желых фракций нефти дл сжигани в промышленных топочных установках |
CN105387347A (zh) * | 2015-10-13 | 2016-03-09 | 中国海洋石油总公司 | 一种油田原油降凝剂及其制备方法 |
CN106047329A (zh) * | 2016-06-06 | 2016-10-26 | 中国石油化工股份有限公司 | 一种耐高温降凝剂及其制备方法 |
CN107090284A (zh) * | 2017-05-09 | 2017-08-25 | 青岛大学 | 一种超分子自组装稠油驱油剂的制备方法 |
CN107435816A (zh) * | 2016-05-26 | 2017-12-05 | 中国石油大学(北京) | 一种使易凝高黏油品降凝降黏的综合处理方法 |
CN107619455A (zh) * | 2016-07-15 | 2018-01-23 | 中国石油天然气集团公司 | 用于原油降凝剂的梳形聚合物及其制备方法、应用 |
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SU1447842A1 (ru) * | 1979-05-31 | 1988-12-30 | Феб Леуна-Верке "Вальтер Ульбрихт" (Инопредприятие) | Улучшение свойств т желых фракций нефти дл сжигани в промышленных топочных установках |
CN105387347A (zh) * | 2015-10-13 | 2016-03-09 | 中国海洋石油总公司 | 一种油田原油降凝剂及其制备方法 |
CN107435816A (zh) * | 2016-05-26 | 2017-12-05 | 中国石油大学(北京) | 一种使易凝高黏油品降凝降黏的综合处理方法 |
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CN110776607A (zh) * | 2019-10-12 | 2020-02-11 | 青岛大学 | 一种新型活性共聚物高凝原油驱油剂的制备方法 |
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