Sigabbr.信号(=signal)abbr.签名(=signature)abbr.标记(=signa)SIG.abbr.特殊利益集团(=special interest group)Sigepn.锡盖普(在印度尼西亚；东经 98º50' 南纬 0º59')

1. This paper discusses the seepage flow characteristic of the single phase fluid in ultra-low permeable cores using experimental method.
   通过实验手段，探索了特低渗透率岩心单相流体渗流特征。
2. Difference model for calculating formation pressure of oil wells at multireservoirsingle phase unstable radial flow condition is established.
   本文建立了多油层径向单相不稳定流条件下油井地层压力计算的差分模型。