基于海上油田低产井回流补液参数优化  

Optimization of Backflow Fluid Supplement Parameters Based on Low Production Wells in Offshore Oilfields

作　　者：安宏鑫 曹广胜[1] 白玉杰[1] 孟凡嵩 卜瑞漩 刘宗祁 AN Hong-xin;CAO Guang-sheng;BAI Yu-jie;MENG Fan-song;BU Rui-xuan;LIU Zong-qi(Key Laboratory of Enhanced Oil&Gas Recovery of Ministry of Education,Northeast Petroleum University,Daqing 163318,China;The Second Oil Production Plant of PetroChina Daqing Oilfield Co.,Ltd.,Daqing 163000,China;The Sixth Oil Production Plant of PetroChina Daqing Oilfield Co.,Ltd.,Daqing 163000,China)

机构地区：[1]东北石油大学提高油气采收率教育部重点实验室,大庆163318 [2]中国石油大庆油田有限责任公司第二采油厂,大庆163000 [3]中国石油大庆油田有限责任公司第六采油厂,大庆163000

出　　处：《科学技术与工程》2021年第13期5318-5325,共8页Science Technology and Engineering

基　　金：国家自然科学基金(51574089)。

摘　　要：在海上油田低产井采用电潜泵举升过程中,电机温度过高将导致烧泵。针对于此问题,首先通过实验确定低产井电机烧泵时间,并通过有限元模拟的方法分析低产井井下流体的流动特征及传热规律,同时提出一种应用于电潜泵的回流补液方法。研究结果表明:在油井产量较低的条件下,流体温度对于电机温度影响不大;由于动液面低于泵吸入口,流体携热能力下降发生烧泵事故,电潜泵泵寿命最少减小为原有的0.21倍;采用回流补液方法后,温度平均降低130℃,电机温度处于安全温度范围内,说明回流装置具有很强可行性;回流通道尺寸在3~4 cm时,回流量最大,相应的电机温度也为各尺寸中最低。In the process of using electric submersible pumps to lift low-yield wells in offshore oilfields,excessive motor temperature will cause the pump to burn.In response to this problem,the motor pump burn-in time of low-yield wells through experiments was first determined,the flow characteristics and heat transfer laws of downhole fluids in low-yield wells through finite element simulation was analyzed,and a backflow replenishment method for electric submersible pumps was proposed.The research results show that under the condition of low oil well production,the fluid temperature has little effect on the motor temperature.Because the moving liquid level is lower than the pump suction port,the heat carrying capacity of the fluid decreases and the pump burn accident occurs,and the pump life of the electric submersible pump is at least reduced 0.21 times as small as the original.After the reflux method is used,the temperature is reduced by 130℃on average,and the motor temperature is within the safe temperature range,indicating that the reflux device is very feasible.When the size of the reflux channel is between 3~4 cm,the return flow is the largest,and the corresponding motor temperature is also the lowest among all sizes.

关 键 词：电潜泵 低产井 回流补液 有限元模拟 海上油井 

分 类 号：TE355.54[石油与天然气工程—油气田开发工程]