Self-conforming screen

摘要: A screen that conforms to the borehole shape after expansion is disclosed. The comprises a compliant outer layer takes on expansion. formed having holes permit production flow. material selected preferably swells with prolonged contact well fluids further close off annular gaps In an alternative embodiment, not expanded and swelling of alone closes gaps. sleeve placed over base pipe initially from within secure components assembly for running downhole, while minimizing or eliminating any welding among layers. variety tools can be used expand screens downhole.