Drainage layers for sand control screen assemblies
First Claim
Patent Images
1. A sand control screen assembly, comprising:
- a base pipe having openings through a thickness of the base pipe;
a perforated drainage layer disposed about the base pipe;
a filter medium positioned about the perforated drainage layer;
a plurality of continuous ribs disposed between the perforated drainage layer and the filter medium, wherein the plurality of continuous ribs are aligned with respect to each other to form a plurality of first channels therebetween, wherein at least some continuous ribs of the plurality of continuous ribs comprise at least one cutout that traverses a width of the at least some continuous ribs, wherein the at least one cutout forms a second channel that allows for flow communication between adjacent first channels on either side of the at least some continuous ribs; and
a shroud disposed about the filter medium.
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Abstract
A sand control screen assembly having a drainage layer that provides a controlled offset between the drainage layer and a filter medium and/or a base pipe. The sand control screen assembly also includes a protective shroud or jacket positioned about the filter medium. The sand control screen assembly can be utilized for preventing the flow of particulate material of a predetermined size therethrough and allowing the flow of production fluids therethrough.
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Citations
25 Claims
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1. A sand control screen assembly, comprising:
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a base pipe having openings through a thickness of the base pipe; a perforated drainage layer disposed about the base pipe; a filter medium positioned about the perforated drainage layer; a plurality of continuous ribs disposed between the perforated drainage layer and the filter medium, wherein the plurality of continuous ribs are aligned with respect to each other to form a plurality of first channels therebetween, wherein at least some continuous ribs of the plurality of continuous ribs comprise at least one cutout that traverses a width of the at least some continuous ribs, wherein the at least one cutout forms a second channel that allows for flow communication between adjacent first channels on either side of the at least some continuous ribs; and a shroud disposed about the filter medium. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A sand control screen assembly, comprising:
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a base pipe having openings through a thickness of the base pipe; a drainage layer disposed about the base pipe; a filter medium positioned about the drainage layer; a shroud disposed about the filter medium; and a plurality of continuous ribs for providing a first substantially uniform radial spacing between an inner surface of the drainage layer and an outer surface of the base pipe, wherein the plurality of continuous ribs are aligned with respect to each other to form a plurality of first flow channels therebetween, and wherein at least some of the plurality of continuous ribs comprise at least one cutout that traverses a width of the at least some continuous ribs, wherein the at least one cutout forms a second channel that allows for flow communication between adjacent first flow channels on either side of the at least some of the plurality of continuous ribs. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A sand control screen assembly, comprising:
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a base pipe having openings through a thickness of the base pipe; a drainage layer having openings through a thickness of the drainage layer, wherein the drainage layer is disposed about the base pipe; a filter medium disposed about the drainage layer; a shroud disposed about the filter medium; and a plurality of inserts positioned in and lining at least a portion of at least a subset of the openings of the drainage layer, wherein each insert of the plurality of inserts has an internal aperture extending therethrough that allows for flow communication between a top of the insert and a bottom of the insert, and wherein the plurality of inserts provide a radial offset between the filter medium and the drainage layer and/or between the base pipe and the drainage layer. - View Dependent Claims (21, 22, 23, 24, 25)
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Specification