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US 2010/0059228 A1Published application
Casing Wiping Dart With Filtering Layer
AssigneeHalliburton Energy Services, Inc.
InventorsDesmond Jones, David Szarka, Brett Fears, Earl Webb
Life of this patent
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Abstract
A dart may include a foam body, a filtering material at least partially covering the foam body, and a mandrel. The foam body may surround the mandrel.
Claims15
A dart comprising:
- a foam body;
- a filtering material at least partially covering the foam body;
- and
- a mandrel;
- wherein the foam body surrounds the mandrel.
2 more elements
A method of cleaning a tubular string comprising:
- introducing a dart having a foam body at least partially covered by a filtering material into the tubular string;
- moving the dart through the tubular string toward a restriction;
- allowing the dart to compress radially to move through the restriction;
- and
- allowing the dart to expand radially to maintain contact with the tubular string after passing through the restriction.
2 more elements
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Dependencies are inferred from the claim text.