Device to relieve sucker rod torque below ground level in a petroleum well
Patent
·
OSTI ID:5464146
An apparatus is described for use in a sucker rod string having a polished rod for relieving torque below the polished rod and inside of a well while the sucker rod string is moving up and down inside of the well, comprising: a body, the body that is suitably fastened to the lower end of the polished rod; at least one set of rollers that are suitably mounted within the body by axles, the rollers with a diameter greater than the width of the body; a lower swivel, and a guide. The guide is a tube that is square in section and is set vertically within the well.
- Assignee:
- NOV; NOV-88-001132; EDB-88-071635
- Patent Number(s):
- US 4714110
- OSTI ID:
- 5464146
- Country of Publication:
- United States
- Language:
- English
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