华中师范大学学报（自然科学版）2013，Vol.47Issue(2)：195-199,5.
Bingham流体在“点到圆”形分叉网络中的启动压力梯度
The starting pressure gradient for Bingham fluids in the fractal disk-shaped branched networks
摘要
Abstract
In this paper, based on the generalized Darcy law and fractal theory and the fact that the fractured network may exist in the oil deposit, the starting pressure gradient for Bingham fluids in the fractal disk-shaped branched networks is investigated. The results show that the starting pressure gradient for Bingham fluids is a function of the yield stress and network microstructural parameters such as the branching ratio, the branching angle and the branching number. The function is an analytical formula, which contains no empirical constant. The permeability for Bingham fluids is only dependent on network microstructural parameters and independent of the yield stress. The results also show that the starting pressure gradient decreases with the increase of the diameter ratio and the permeability and increases with the increase of the length ratio. The results have potential applications in petroleum recovering.关键词
裂缝网络/分形理论/渗透率/启动压力梯度Key words
the fractured network/ fractal theory/ permeability/ the starting pressure gradient分类
数理科学引用本文复制引用
王世芳,吴涛..Bingham流体在“点到圆”形分叉网络中的启动压力梯度[J].华中师范大学学报（自然科学版）,2013,47(2):195-199,5.基金项目
油气藏地质及开发工程国家重点实验室(西南石油大学)资助项目(PLN1205). （西南石油大学）
