工业水处理 ›› 2022, Vol. 42 ›› Issue (3): 168-171. doi: 10.19965/j.cnki.iwt.2021-0660

• 油气田水处理 • 上一篇    下一篇

电场强化油水分离技术在油田采出液中的应用研究

唐晓旭1,2,3,张勇1,3,王秀军2,3(),陈家庆4   

  1. 1.中海石油(中国)有限公司天津分公司, 天津 300452
    2.海洋石油高效开发国家重点实验室, 北京 100028
    3.中海油研究总院有限责任公司, 北京 100028
    4.北京石油化工学院, 北京 102617
  • 收稿日期:2021-12-27 出版日期:2022-03-20 发布日期:2022-03-21
  • 通讯作者: 王秀军 E-mail:wangxj89@cnooc.com.cn
  • 作者简介:唐晓旭(1971— ),高级工程师|王秀军,高级工程师。E-mail:wangxj89@cnooc.com.cn
  • 基金资助:
    国家自然科学基金企业创新发展联合基金重点支持项目(U20B2030)

Application research of electric field enhanced oil-water separation in oilfield produced liquid

Xiaoxu TANG1,2,3,Yong ZHANG1,3,Xiujun WANG2,3(),Jiaqing CHEN4   

  1. 1.Tianjin Brach of CNOOC,Tianjin 300452,China
    2.State Key Laboratory of Offshore Oil Exploitation,Beijing 100028,China
    3.CNOOC Research Institute Company,Ltd. ,Beijing 100028,China
    4.Beijing Institute of Petrochemical Technology,Beijing 102617,China
  • Received:2021-12-27 Online:2022-03-20 Published:2022-03-21
  • Contact: Xiujun WANG E-mail:wangxj89@cnooc.com.cn

摘要:

目前海上油田处理高含水采出液采用的是“三相分离+电脱水”工艺,工艺流程较长,占地面积大。为了更高效地处理高含水采出液,设计了新型电场强化油水分离器,并制造了处理能力为10 m3/h的撬装装置。通过矿场试验研究了频率、破乳剂等对电场强化油水分离器分离效果的影响,结果表明,针对平台高含水(含水率78%~97%)原油来液,当控制入口流量为10 m3/h,静电聚结器电源电压为4.98 kV,电源频率为3 500 Hz时,油相出口含水低至7%,可以不加破乳剂,节约了药剂成本。

关键词: 静电聚结, 三相分离器, 脱水, 破乳

Abstract:

At present,the process of “three-phase separation+electric dehydration”is adopted in the treatment of high water-cut produced fluid in offshore oilfields,which has a long process flow and a large area. In order to deal with the produced fluid with high water content more efficiently,a new type of electric field-enhanced oil?water separator was designed,and a skid-mounted device with a processing capacity of 10 m3/h was manufactured. The influence of frequency,demulsifier,etc. on the separation effect of the electric field-enhanced oil?water separator was studied through field experiments. The results showed that for the platform crude oil incoming liquid with high water content(water content of 78%?97%),when the inlet flow rate,the power supply voltage of the electrostatic coalescer and the power supply frequency was controlled to 10 m3/h, 4.98 kV and 3 500 Hz,the water content of the oil phase outlet was as low as 7%. In this case,the demulsifier could be omitted,which saved the cost of medicine.

Key words: electrostatic coalescence, three-phase separator, dehydration, demulsification

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