Friction reducing wear band and method of coupling a wear band to a tubular

摘要

In one embodiment, a wear band comprises a rotating element having a bore receivable on a tubular, the bore comprising first and second bore portions slidably receiving first and second sleeve bearings. Outer surfaces of the sleeve bearings slidably engage the bore portions and the bores of the sleeve bearings slidably engage the tubular. A first stop collar and a second stop collar may be received on the tubular to together straddle the rotating element and sleeve bearings to longitudinally secure the rotating element in a position on the tubular. The tubular may be included within a tubular string run into a borehole or into the bore of an installed casing, such as in casing while drilling. The rotating element provides stand-off between a tubular and the wall of a bore, reduces frictional resistance to longitudinal sliding and also to rotation of the tubular string within the bore.

主权项

1. A kit to assemble on a tubular, comprising:
a rotating element comprising a bore configured to receive the tubular therethrough, the bore including an interior groove, wherein the rotating element is configured to rotate relative to the tubular, when the tubular is received through the bore; a stop collar having a bore, a retainer portion configured to be received within the interior groove of the rotating element, and one or more first fingers extending along the bore of the stop collar; and a sleeve sized to be received onto the one or more first fingers to capture the one or more first fingers between the sleeve and the tubular when the stop collar is received on the tubular, such that an interference fit is formed between the one or more first fingers and the sleeve, wherein the sleeve is configured to expand when received onto the one or more first fingers of the stop collar when the stop collar is received around the tubular, such that an elasticity of the sleeve causes the sleeve to apply a radially-inward gripping force onto the one or more first fingers.