| 摘要 |
<p>Production of liquids into a production string is regulated at inlets to the production string. An annular space is defined between a base pipe and a surrounding screen. The base pipe has inlets near one end of the screen and an overlaying shroud that spans over the screen and the inlet to the base pipe so as to define a restricted annular path to the base pipe opening and within the screen. A porous material is placed in the annular space and extends over the base pipe opening. If gas with liquid is produced, the gas having a lower density and viscosity preferentially gets through the porous media while the denser and more viscous water or other liquid is kept out due to greater resistance to flow offered by the porous media.</p> |
