Device to relieve sucker rod torque below ground level in a petroleum well

Patent · Tue Dec 22 00:00:00 EST 1987

OSTI ID:5464146

Dysarz, E D

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
• Resource Relation: Patent File Date: Filed date 7 Aug 1986
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
EQUIPMENT PROTECTION DEVICES
ROD PUMPS
DESIGN
OIL WELLS
OPERATION
PUMPING
TORQUE
PUMPS
WELLS
020300* - Petroleum- Drilling & Production