新疆石油天然气 ›› 2022, Vol. 18 ›› Issue (3): 54-59.DOI: 10.12388/j.issn.1673-2677.2022.03.009

• 油气开发 • 上一篇    下一篇

BW区原油活性物对化学驱界面张力的影响

  

  1. 1.新疆油田分公司工程技术研究院,新疆克拉玛依  834000 2.中国石油新疆油田分公司开发公司,新疆克拉玛依  834000 3.重质油国家重点实验室,中国石油大学(北京)克拉玛依校区,新疆克拉玛依  834000
  • 出版日期:2022-09-25 发布日期:2022-09-25
  • 通讯作者: 侯军伟(1981-),2012年毕业于同济大学材料化学专业,副教授,研究方向为油田化学。(Tel)0990-6233347(E-mail)junwhou@163.com
  • 作者简介:罗腾(1994-),2020年毕业于中国石油大学(北京)理学院,工学硕士,工程师,从事油气田开发工作。(Tel)13121073480(E-mail)luoteng1@petrochina.com.cn
  • 基金资助:
    中国石油天然气股份有限公司项目《准噶尔盆地致密油储层改造关键技术研究与现场试验》,项目编号2020CGCG006;新疆维吾尔自治区创新环境(人才、基地)建设专项(人才专项计划-天山青年计划)(2018Q031

The Effect of Active Substance in the Crude Oil of Block BW on Interfacial Tension During Chemical Flooding

  1. 1. Research Institute of Engineering Technology,PetroChina Xinjiang Oilfield CompanyKaramay 834000XinjiangChina 2. Development CompanyPetroChina Xinjiang Oilfield CompanyKaramay 834000XinjiangChina 3. State Key Laboratory of Heavy Oil ProcessingKaramay CampusChina University of Petroleum Beijing),Karamay 834000XinjiangChina
  • Online:2022-09-25 Published:2022-09-25

摘要: 原油中活性物质对化学驱配方的界面张力大小有着重要影响。提取了新疆油田BW区原油的活性物质,研究了活性物跟石油磺酸盐和碱的界面张力。结果显示,BW区原油的胶质、沥青质含量偏低,界面活性物质主要存于在乙酸乙酯洗脱液中,其主要成分为CnH2n-2O2CnH2n-4O2两种类型,包括酚、醇类和羧酸类。单独加入Na2CO3后,界面张力可降低至10-2 mN/m;单独加入石油磺酸盐,界面张力降低效果较差,只达0.5 mN/m;同时加入石油磺酸盐和Na2CO3后,界面张力很快下降至10-3 mN/m。主要是因为碱和乙酸乙酯洗脱液部分成分发生反应,生成了增强石油磺酸盐性能的激活剂,使得界面张力大幅度下降。

关键词: 原油界面活性物质, 石油磺酸盐, 三元复合驱, 新疆油田

Abstract:

The active substance in crude oil has an important influence on the interfacial tension of chemical flooding formula. After active substance in the crude oil of Block BW in Xinjiang Oilfield was extracted,the interfacial tensions between it and petroleum sulfonate KPS and alkali were studied. The results show that the contents of resin and asphaltene in the crude oil are very lowand the interfacial active substance mainly exists in ethyl acetate eluent. Main components of the active substance include phenolsalcohols and carboxylic acidswhich fall into two types of CnH2n-2O2 and CnH2n-4O2. With Na2CO3 added,the interfacial tension was reduced to 10-2 mN/m. With KPS addedthe interfacial tension was only reduced to 0.5 mN/mshowing a poor effect. After adding both KPS and Na2CO3 togetherthe interfacial tension was quickly reduced to 10-3 mN/m. This is mainly because that alkali reacts with some components of ethyl acetate eluentand an activator to enhance the performance of petroleum sulfonate is producedwhich greatly reduces the interfacial tension.

Key words: interfacial active substance in crude oil, petroleum sulfonate, ASP flooding, Xinjiang Oilfield

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