Sand control screen assembly having a compliant drainage layer
First Claim
1. 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.
1 Assignment
0 Petitions
Accused Products
Abstract
A sand control screen assembly (300) includes a base pipe (302) having at least one opening in a sidewall thereof and a screen jacket positioned about the base pipe (302). The screen jacket includes a drainage layer (304) and a filter medium positioned about the drainage layer (304). The drainage layer (304) includes a plurality of circumferentially distributed axially extending ribs (306) and a wrap wire (308) positioned around the ribs (306) forming a plurality of turns having gaps therebetween. The ribs (306) includes a plurality of first ribs (310) having a first cross-sectional rib profile, shaped and sized to maintain an annular space between the wrap wire (308) and the base pipe (302) and a plurality of second ribs (312) having a second cross-sectional rib profile, shaped and sized to provide for a gap between the second ribs (312) and the base pipe (302).
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Citations
8 Claims
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1. A sand control screen assembly comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification