摘要
目前有杆采油系统模型主要侧重于机械环节抽油杆行为预测及抽油机结构优化,无法对抽油机电机电气能耗状况及节能潜力进行准确分析。针对这一问题,以一台Y2—280S—8、37k W异步电机驱动的CYJ10型游梁式抽油机为例,建立了计及电机磁路饱和与抽油杆波动的有杆采油系统实用仿真模型;并利用上述模型对抽油机不同运行条件下系统能耗状况进行了对比分析。进一步针对当前油田普遍存在的供电线路长、动液面大小不一等特点,在不过多追加投资及更换设备前提下,对系统节能潜力进行了分析。结果表明:通过改变配电变压器分接开关位置,系统可节电2.5%;按照行标SYT5264将抽油机平衡度调至95%左右,系统仍有一定节电空间;若辅以传统星角转换及无功补偿等节能技术,系统综合节电率可达16.8%。通过与常规井实测数据对比,验证了所建模型的有效性与正确性。
The current rod-pumping system model mainly focused on machinery, such as behavior prediction of sucker rod and structure optimization of beam pumping unit(BPU). It is not suitable for accurate analysis of electrical energy consumption and energy-saving potential. To solve this problem, taking a CYJ10 BPU driven by a Y2—280S—8, 37 k W induction motor as an example, the practical simulation model considering saturation of magnetic circuit and wave equation of sucker rod is established. With this model, comparative analysis on BPU system energy consumption with different running conditions are carried out. Furthermore, aiming at the common phenomena in oilfield nowadays, such as long power lines and various working fluid levels, the system energy-saving potential is estimated, without additional investment and replacement of equipment. It indicates that the energysaving rate is 2.5% by regulating the transformer taps. With the counter weight balance about 95% position according to the industry standard, the system still own a certain energy-saving potential. If the traditional Y-? conversion and reactive power compensation technology are supplemented, the comprehensive energy-saving rate can reach up to 16.8%. The reliability and accuracy of model are verified through comparing with conventional beam pumping well(BPW) test.
出处
《电工技术学报》
EI
CSCD
北大核心
2015年第6期133-141,共9页
Transactions of China Electrotechnical Society
基金
国家自然科学基金(51307050)
中央高校基本科研业务费专项资金资助项目
关键词
游梁式抽油机
波动方程
损耗模型
节能潜力
Beam pumping unit,wave equation,loss model,energy-saving potential
