摘要
为了进一步认识出砂冷采机理,在一维模型的基础上,将出砂冷采模型推广到径向流条件下,重新引入无因次变量,对模型进行了简化和求解。通过实例计算,证明径向流模型能够反映出砂冷采时的开采特征,从而证明了模型的可靠性。此外,实例计算还表明,连续出砂确实是出砂冷采提高产量的重要机理之一。地层连续出砂使得井筒附近形成高渗流通道,解除了表皮污染,改善了油藏中流体的流动特性。该模型仍有一些缺点,必须进一步优化、完善。
In order to more properly understand the mechanism of cold heavy oil production （CHOP）, the one dimensional CHOP model is applied to the radial flow conditions. Re-introducing dimensionless variables is made to simplify and solve the model, developing the radial flow model. The case calculation indicates that the radial flow model can reflect the behavior of cold production and sand inflow, be consistent with real situations quantitatively, and prove its reliable property. The study also shows that continuous sand inflow is indeed one of the most key mechanisms by CHOP for 1OR, such as forming highly flowing channels, removing skin effect and improving fluid flowing performance in heavy oil reservoir. Finally, a brief discussion is conducted on the defects and the development in the future.
出处
《新疆石油地质》
CAS
CSCD
北大核心
2006年第3期328-331,共4页
Xinjiang Petroleum Geology
关键词
出砂
冷有
一维
模型
径向流动
heavy oil
sand inflow
cold production
one-dimensional model
radial flow model
