A coupled model of seepage and pipe-flow for sand production from big channel in unconsolidated reservoir is deduced based on fluid mechanics and rock mechanics.

• 将渗流力学、岩石力学、流体力学知识相结合,建立了弱胶结油藏大孔道出砂的渗流与管流耦合模型,并进行了实例计算。