摘要
SAGD技术是超稠油开发中的一项前沿性技术,而蒸汽的状态影响管线的阻力损失。研究了高干度蒸汽注汽管线阻力损失的计算方法,确定蒸汽干度的变化规律。采用以水和空气为介质在不同室内条件下进行模拟实验,结果表明,蒸汽存在临界干度,在小于临界干度时,比摩阻随着蒸汽干度的变化而变化得不明显;大于临界干度时,比摩阻随蒸汽干度的变化而发生剧烈变化;初始压力对摩阻系数影响不大。采用经验公式计算结果与实验所得值误差较小。
At present,using SAGD to extract crude thickened oil has been a frontier-technology.The state of the steam has great effect on the resistance of the pipeline.This article targets the research of the method to calculate the pressure with experiment.Based on the high-temperature steam of the high-level dryness fraction,the paper carries out an experimental simulation using water and air as the experimental material under laboratory conditions,then processes the collected experimental data to draw the conclusion.There is a critical dryness fraction.When the dryness fraction is less than the critical dry degree,the changes of the friction with the sensitivity change is not obvious;when larger than the critical dry degree,the friction changes rapidly.However,the initial pressure has little effect on the friction coefficient.At the same time we get the local friction coefficient when installing the expansion joint elbow.Compared with the experimental value,the error is smaller when using the empirical formula.
出处
《承德石油高等专科学校学报》
CAS
2010年第2期50-54,共5页
Journal of Chengde Petroleum College
关键词
SAGD技术
蒸汽干度
压降
流动实验
SAGD technology
stream quality
loss of pressure
flowing experiment
