Premium mesh screen

摘要

Systems and methods for preventing particles from flowing into a base pipe are provided. A base pipe can have a plurality of perforations formed radially therethrough. A filtering strip can be wrapped helically around an outer surface of the base pipe to cover at least a portion of the perforations. The filtering strip can include a drainage layer, a filter layer, and a shroud layer. The drainage layer can include a plurality of ribs in contact with the outer surface of the base pipe. The filter layer can be coupled to the drainage layer and include at least one mesh screen. The shroud layer can be coupled to the filter layer and include a perforated metal sheet.

主权项

1. A downhole tool, comprising:
a base pipe having a plurality of perforations formed radially therethrough; and a filtering strip wrapped helically around an outer surface of the base pipe to cover at least a portion of the perforations, the filtering strip comprising:
a drainage layer comprising a plurality of ribs in contact with the outer surface of the base pipe;a filter layer positioned adjacent to the drainage layer, wherein the filter layer comprises at least one mesh screen; anda shroud layer positioned adjacent to the filter layer, wherein the shroud layer comprises a perforated metal sheet, wherein the drainage layer and the shroud layer are structurally connected to one another prior to being wrapped around the base pipe, and wherein the drainage layer, the filter layer, and the shroud layer are wrapped simultaneously around the base pipe.