Patent ID: 8701757

Claim:
A sand control screen assembly comprising: a base pipe having at least one opening in a sidewall thereof; and a screen jacket positioned exteriorly about the base pipe, the screen jacket including a drainage layer and a filter medium positioned exteriorly about the drainage layer, the drainage layer including a plurality of circumferentially distributed axially extending first ribs, a plurality of circumferentially distributed axially extending second ribs and a wrap wire securably attached exteriorly to the first ribs and the second ribs forming a plurality of turns having gaps therebetween, wherein the first ribs contact the base pipe and have a first nominal diameter that provides a first stand-off dimension between the wrap wire and the base pipe at the locations of the first ribs; and wherein, the second ribs having a second nominal diameter that is less than the first nominal diameter such that, in a first configuration of the drainage layer, the second ribs form gaps with the base pipe and, in a second configuration of the drainage layer, the second ribs contact the base pipe to provide a second stand-off dimension, that is less than the first stand-off dimension, between the wrap wire and the base pipe at the locations of the second ribs.