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US 2017/0183920 A1Published application
Collar swaging of single-piece centralizers
OwnerGeorge W. Ribble, Michael L. Betik +2inventors
InventorsGeorge W. Ribble, Michael L. Betik, David Harris Stewart, Eugene Edward Miller
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Abstract
A method for manufacturing a centralizer. The method includes selecting a tubular having a first inner diameter, cutting the tubular to form a blank including at least one end collar and ribs integrally-formed therewith, and swaging the at least one end collar such that the first inner diameter is modified to a second inner diameter.
Claims20
A method for manufacturing a centralizer, comprising:
- selecting a tubular having a first inner diameter;
- cutting the tubular to form a blank comprising at least one end collar and ribs integrally-formed therewith;
- and
- swaging the at least one end collar such that the first inner diameter is modified to a second inner diameter.
1 more element
A centralizer comprising:
- a rolled tubular having a seam;
- at least one rib formed in the rolled tubular;
- and
- at least one end collar formed in the rolled tubular, wherein the at least one end collar has a first inner diameter prior to a swaging process and a second inner diameter after the swaging process.
1 more element
A swaging device for a centralizer, comprising:
- a body having a tapered surface;
- and
- a plurality of dies each having:
- a reverse-tapered surface that is reverse tapered with respect to the tapered surface of the body;
- and
- an engagement surface that is opposite to the reverse-tapered surface, wherein the body is configured to slide relative to the plurality of dies so as to swage an end collar of the centralizer.
3 more elements
Dependencies are inferred from the claim text.