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US 8,136,384 B2Granted
Hardband wear testing system and method
AssigneeNational Oilwell Varco, L.P.
InventorsDaniel L. Hannahs, Irving O. Logan, Alfred Calles, Jr.
Life of this patent
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Abstract
A hardband wear testing system with a first rotatable member connected to a tool joint to rotate the tool joint in a first direction. A second rotatable member connectable to the casing sample to rotate the casing sample in the first direction or in a second direction opposite to the first direction. One or more actuators may be utilized to raise and lower the second rotatable member and the casing sample with respect to the tool joint.
Claims24
A hardband wear testing system to test wear between a hardband of a tool joint and a casing sample, comprising:
- a holder adapted to receive said casing sample;
- a housing surrounding said holder;
- a plurality of vertical guide assemblies secured to opposite sides of said housing, said plurality of vertical guide assemblies being adapted to permit vertical movement of said housing and prevent horizontal and axial movement of said housing;
- and
- at least one actuator connectively secured to said housing operable to raise and lower said casing sample with respect to said tool joint.
2 more elements
Dependencies are inferred from the claim text.