过热型多元热流体平行双管流动特征

发布时间：2018-01-15 03:12

本文关键词：过热型多元热流体平行双管流动特征　出处：《大庆石油地质与开发》2017年05期 　论文类型：期刊论文

【摘要】：针对平行双管注过热型多元热流体井筒传热问题,利用质量、能量和动量守恒方程建立了井筒内非等温流动数学模型。结合有限差分和迭代方法得到井筒内流动典型曲线。在模型验证的基础上,对注汽参数进行了优化。研究表明:主油管中高温流体通过热辐射和热对流向低温副油管导热,导致主油管中过热度下降,副油管中过热度升高;随主油管注汽速度增加,主油管中温度和过热度先迅速增加,后缓慢增加;主油管注汽温度增加,井底过热度增加;非凝结气含量增加,流体过热度均下降。
[Abstract]:Aiming at the problem of heat transfer in multi-element thermal fluid wellbore with parallel double-tube injection superheated type, the mass is used. The mathematical model of non-isothermal flow in wellbore is established by conservation equation of energy and momentum. The typical curves of flow in wellbore are obtained by combining finite difference and iterative method. The steam injection parameters are optimized. The results show that the high temperature fluid in the main tubing leads to the decrease of the superheat degree and the increase of the superheat degree in the main tubing due to the heat conduction through the heat radiation and heat to the low temperature auxiliary tubing. With the increase of steam injection speed of main tubing, the temperature and superheat in main tubing increase rapidly first, then slowly. The steam injection temperature of the main tubing increases and the bottom hole superheat increases; The content of uncondensed gas increased and the superheat of fluid decreased.
【作者单位】：中国石油大学石油工程学院;
【基金】：中国海洋石油总公司海洋石油高效开发国家重点实验室第三批开放基金课题“稠油热采流动规律主要影响因素分析”(2015-YXKJ-001) 国家科技重大专项“西非、亚太及南美典型油气田开发关键技术研究”(2011ZX05030-005)子课题“西非深水油田注采参数优化及单井产能预测研究”(2011ZX05030-005-04)
【分类号】：TE357.44
【正文快照】： parameter distribution;numerical model;heavy oil reservoir注蒸汽是稠油开采的重要手段[1-6]。准确预测井筒内热物性参数分布对现场具有重要意义。1967年,Willhite[7]提出了预测井筒内蒸汽温度的方法,为后续研究打下基础[8-10]。1987年Ejiogu等[11-12]提出了热参数计算经

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