垂直井筒内超临界蒸汽相态变化规律数值模拟——以高升油田高3624块为例  

Numerical simulation of phase change regularity of supercritical steam in vertical wellbores--by taking Gao 3624 block of Gaosheng oilfield as an example

作　　者：刘承婷[1] 张炜 尹井奇 LIU Chengting;ZHANG Wei;YIN Jingqi(College of Petroleum Engineering,Northeast Petroleum University,Daqing,Heilongjiang 163318,China)

机构地区：[1]东北石油大学石油工程学院,黑龙江大庆163318

出　　处：《石油地质与工程》2020年第4期106-111,共6页Petroleum Geology and Engineering

基　　金：中国石油科技创新基金项目(2018D-5007-0206)。

摘　　要：根据高升油田高3624块的储层地质条件及流体特征,结合超临界蒸汽吞吐机理,通过对动量方程、能量方程、散热方程等控制方程的求解,建立超临界蒸汽驱压降及温降的数值模型,计算超临界蒸汽各参数在注气油井中的数值展布,研究垂直井筒内超临界蒸汽吞吐过程中流动的各项热力学参数、压力降和套管温度的变化规律。以计算流体力学为基础,通过改变注入蒸汽压力、蒸汽温度等模拟条件,得到不同位置的温度场、压力场分布云图,进一步加深对超临界蒸汽相态变化规律的研究,为高升油田超临界注汽参数的优化和提高深层稠油采收率提供依据。According to the reservoir geological conditions and fluid characteristics of Gao3624 block in Gaosheng oilfield,combined with the mechanism of supercritical steam stimulation,the numerical model of pressure drop and temperature drop in supercritical steam drive is established by solving the governing equations such as momentum equation,energy equation and heat dissipation equation.The numerical distribution of supercritical steam parameters in gas injection well is calculated,and the variation of thermodynamic parameters,pressure drop and casing temperature in the process of supercritical steam huff and puff in vertical wellbore is studied.On the basis of computational fluid dynamics,by changing the simulation conditions such as injection steam pressure and steam temperature,the distribution of the temperature field and pressure field at different positions are obtained,which further deepens the research on the phase change law of supercritical steam,and provides the basis for the optimization of supercritical steam injection parameters and the enhancement of deep heavy oil recovery in Gaosheng oilfield.

关 键 词：超临界蒸汽 相态变化 注气参数 数值模拟 

分 类 号：TE357.41[石油与天然气工程—油气田开发工程]