稠油流变性及启动压力梯度的实验研究  

EXPERIMENTAL STUDY ON RHEOLOGICAL PROPERTY AND THRESHOLD PRESSURE GRADIENT OF HEAVY OIL

作　　者：张跃雷[1] 程林松[1] 李春兰[1] 侯君[1] 

机构地区：[1]中国石油大学(北京)石油天然气工程学院,北京102249

出　　处：《新疆石油天然气》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)

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.

关 键 词：稠油 流变性 黏度 启动压力梯度 

分 类 号：TE133[石油与天然气工程—油气勘探]