超临界注汽油井中蒸汽参数的数值计算  

HEAT DISSIPATION AND PRESSURE DROP OF OIL-WELL WITH SUPERCRITICAL STEAM INJECTION

作　　者：王良[1] 王秋旺[1] 胡延东[1] 张毅[1] 盖平原[1] 徐明海[1] 陶文铨[1] 

机构地区：[1]西安交通大学能源与动力工程学院,陕西西安710049

出　　处：《工程热物理学报》2001年第5期601-604,共4页Journal of Engineering Thermophysics

基　　金：教育部高等学校博士学科点专项基金资助项目(No.98069835);国家自然科学基金资助项目(No.59995460-2)

摘　　要：本文通过对动量方程、能量方程、散热方程等控制方程的离散求解，用稳态和瞬态相结合的方法，计算了超临界注汽油井地下垂直段、过渡段和水平段蒸汽参数（压力、温度等）和井简散热损失、压力降等随注入时间、注入流量和压力的变化规律．计算结果表明，随着井深的增加，蒸汽压力在垂直段和过渡段的前半部分是增加的，而在过渡段后半部分和水平段则减小，且同一井深位置随流量增加蒸汽压力减小，注入蒸汽压力高于２２ ＭＰａ时，井底蒸汽出口压力比入口高。同一井深位置每公斤蒸汽散热损失随流量的增加而减少，而随压力的增加无明显变化。井底蒸汽压力和温度在注入时间大约３天左右即趋于一稳定值，而井底热损失则随注入时间的增加而减少．In the present work, the variations of heat dissipation, pressure drop and temperature of the oil-well with the supercritical steam injection with time, mass flux, pressure and the depth of oil-well were studied parametrically by solving the momentum equation, energy equation, and heat dissipation equation. It was found that both the steam pressure and heat dissipation decreases with the increase of the inlet steam flow rate at the same well depth, and the exit steam pressure is higher than the inlet if the inlet steam pressure is greater than 22 MPa. Furthermore, after about thIee-day's injection, both the exit steam pressure and temperature approach constant, while the heat dissipation of steam at the exit of the well decrease with time.

关 键 词：超临界注气 汽油井 蒸汽参数 数值计算 

分 类 号：TE15[石油与天然气工程—油气勘探] TK124[动力工程及工程热物理—工程热物理]