变频采油全程电磁加热器设计-河北工业科技-河北科技大学.PDF

25 5 河 北 工 业 科 技 Vol. 25, No . 5 2008 9 H ebei Journal of Industrial Science and Technology Se t. 2008 : 1008-1534( 2008) 05-0305- 05 1 2 1 1 , , , ( 1. 河北科技大学电气信息学院, 河北石家庄 050018; 2. 石家庄市热电四厂, 河北石家庄 050000) : 针对稠油高凝油油藏开采过程 的举升困难问题, 设计了一套利用油管和套管作为发热 体, 利用变频技术直接加热油管内原油的方法工频下的三相交流电通过AC ) DC ) AC 逆变系 统逆变为频率和占空比在 一定范围内均可单独调节的 100~ 1 200 Hz 单相交流电, 输出传送到油 管, 经油管下部的油套管接触器连接到套管, 形成 一个完整的回路, 利用集肤效应实现油管加热, 有 效地解决了电网不平衡问题和油管结蜡问题当井况发生变化时, 系统还可以利用频率自动跟踪 技术, 实现谐振频率的实时跟踪, 保证加热效率 : 变频采油; 全程电磁加热; 独立调压调频; 频率自动跟踪 : T P311 : A Design of w hole rocess electromagnetic heating system for extracting crude oil w ith frequency converter 1 2 1 1 ZHAO Ying-bao , YANG Jian-rong , SONG Xue-ling , SONG Zhe-ying ( 1. College of Electrical Engineering and Information Science, H ebei University of Science and Technology , Shijiazhuang H ebei 050018, China; 2. No .4 Themoelectric Plant of Shijiazhuang City, Shijiazhuang Hebei 050000, China) Abstract: In view of the lift ing difficulty roblem in extracting the heavy oil and high-coagulate crude oil, a heating technology of frequency converter is ro osed w hich can directly heat crude oil in the oil tube by taking the oil tube and bushing as heat su ly. Industrial-frequency three- hase alternating current can be converted to 100~ 1 200 H z single hase alternating current by AC) DC ) AC inverse system and the frequency and duty ratio of the single hase alternating current can be adjusted in some sco e inde endently . T he single hase alternating current is a lied on the oil tube,