欠平衡钻井环空多相流井底压力计算模型
周英操, 高德利, 刘永贵
New model for calculating bottom hole pressure of multiphase flow in annulus of underbalanced straight well
Zhou Ying-cao, Gao De-li, Liu Yong-gui
石油学报 . 2005, (2): 96 -99 .  DOI: 10.7623/syxb200502022