陕西科技大学学报（自然科学版）Issue(2)：111-115,5.
考虑渗透率变化的低渗透油藏非达西渗流模型
Non-darcy flow model of low-permeability reservoirs considering permeability changes
摘要
Abstract
The flow of low‐permeability fluid is non‐darcy flow ,often be described by start‐up pressure gradient ,but the actual percolation curve is not straight line .This paper considering changed permeability and start‐up pressure gradient ,the non‐darcy flow model was estab‐lished ,retain the two items ,solve the model by Newton‐Raphson method .The result is that the log‐log pressure and derivative curves will upward in the later period ,the lasting time of changing permeability was shorter and start‐up pressure gradient was larger ,the log‐log pressure and derivative curves were more upward ;In the closed boundary and constant pres‐sure boundary ,when outer boundary radius was bigger ,the log‐log curves were more up‐ward;the upward of this model′s curves is smaller than others .关键词
低渗透油藏/渗透率变化/非达西渗流/启动压力梯度Key words
low-permeability reservoirs/permeability changes/non-darcy flow/start-up pressure gradient分类
能源科技引用本文复制引用
李卫东,吴亚芳,马哲,苏玉亮..考虑渗透率变化的低渗透油藏非达西渗流模型[J].陕西科技大学学报（自然科学版）,2015,(2):111-115,5.基金项目
国家科技部重点基础研究发展规划“973”计划项目 （）
