摘要
针对无水稠油的流动特征,基于流体力学基本理论,建立了合理的无水稠油流动特性物理评价模型—细管模型,测量了不同黏度稠油的流变性;建立了对应不同黏度稠油的流变模式和本构方程;确定了塑性黏度与启动压力梯度的关系式;分析了管径、黏度对稠油流变性的影响规律。结果表明,无水稠油的流变模式呈宾汉流体特征,其塑性黏度与启动压力梯度关系以对数形式相关性最好,无水稠油的流动特征与管径、黏度因素关系显著。
In view of the flowage characteristic of heavy crude without water and based on the fluid dynamics theory,the experiment established a advisable physics evaluative model(on the condition of normal temperature and pressure)for water-free heavy oil and measured the rheological property of heavy oil with different viscosity ;The article established the flowage mode and constitutional equation corresponding to the heavy oil with different viscosity;It has also gained the relational expression of plastic viscosity and threshold pressure gradient;analyzed the affection law of viscosity and caliber to the rheological behavior of heavy oil;discussed the affection element on rheological property of the heavy oil and proposed the technical specification of the heavy oil exploitation from the branch of rheological behavior.
出处
《新疆石油天然气》
CAS
2007年第3期28-30,共3页
Xinjiang Oil & Gas
基金
国家973资助项目"化学驱和微生物驱提高石油采收率的基础研究"(2005CB22130004)
关键词
稠油
流变性
黏度
启动压力梯度
heavy oil
rheological property
viscosity
threshold pressure gradient
