反循环热洗有杆泵井井筒温度场数值模拟Numerical simulation of temperature for indirect thermal washing in sucker rod pumped well
张立刚;谭甲兴;陶泽俊;王倩颖;李浩;娄绢平;孙道坤;薛东阳;
摘要(Abstract):
以有杆泵抽油井为例,引入井筒温度场计算的热流耦合模型和数值模拟方法,计算不同工况下采液过程和热洗过程中的油套环空和油管内的温度场分布。结果表明:采液过程中,随产液量和含水率增加,油管内各点温度逐渐升高,当产液量为0~85 t/d时,温升速率较快;当产液量超过85 t/d时,温度变化趋于平缓。热洗过程中,油套环空温度自上而下逐渐降低,油管内温度逐渐升高,随洗井温度和洗井排量增大,井下各点温度升高,但温升速率不同。井筒内温度数值模拟结果与实测结果符合率为96.59%~99.74%。该结果为反循环热洗油井清蜡提供指导。
关键词(KeyWords): 反循环热洗;有杆泵;热流耦合;温度场;清蜡
基金项目(Foundation): 国家自然科学基金项目(51504067);; 黑龙江省博士后基金项目(LBH-Z15031)
作者(Author): 张立刚;谭甲兴;陶泽俊;王倩颖;李浩;娄绢平;孙道坤;薛东阳;
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