| 摘要 |
A wellbore screen for screening particulates in wellbore fluid comprising: a base pipe having an inner bore; and a screen section disposed in a section of the base pipe, the screen section comprising (i) an outer jacket having an inner facing surface and apertures extending through the outer jacket, (ii) an inner wall having an outer surface, an inner surface and a port extending through the inner wall from the inner surface to the outer surface, (iii) an annulus formed between the inner facing surface of the outer jacket and the outer surface of the inner wall, (iv) a filter medium for the apertures of the outer jacket; and (v) a filter disc disposed in the port of the inner wall, wherein wellbore fluid flows from outside the base pipe into the inner bore through the apertures, the filter medium, the annulus, and the filter disc |
