Abstract: A device for connection to a wellhead for coupling a drive assembly for a downhole pump with an apparatus having a rotatable member for driving the apparatus. A rotatable first shaft, having a first end and a longitudinal axis, is associated with the drive assembly such that the first shaft is rotated thereby. A rotatable connector, having driven and drive ends, connects the first shaft with the rotatable member such that rotation of the first shaft rotates the connector. The driven end connects with the first end of the first shaft. The drive end connects with the rotatable member. A rotatable coupler, having driven and drive ends and a longitudinal axis, connects the first shaft with the connector. The driven end of the coupler connects with the first end of the first shaft. The drive end of the coupler connects with the driven end of the connector.

Abstract: A tubing head is provided for accommodating a rotator. The rotator includes a drive gear and a swivel tubing hanger which engages an internal surface of the tubing head and comprises a driven gear for engaging the drive gear. The tubing head defines a gear housing for the drive gear so that the drive gear may releasably engage the driven gear. The internal surface, gear housing and drive and driven gears are configured such that when the drive gear is in the gear housing, the tubing hanger engages the internal surface and the drive and driven gears are engaged, the tubing hanger may be removed from the tubing head by pulling it through the upper end without first disengaging the drive and driven gears. An apparatus is also provided comprising the tubing head, the swivel tubing hanger and the drive gear.

Abstract: The invention relates to a method and a device for longitudinally adjusting the position of a rotating rod string, having an upper end and a lower end, in a production well of the type having a downhole rotary pump connected to the lower end of the rod string, means for driving the rotary pump by rotating the rod string, and a lower clamp operably connected to the driving means and releasably fixable near the upper end of the rod string such that operation of the driving means rotates the lower clamp which rotates the rod string. The device is comprised of a tubular inner sleeve having a threaded outer surface and a lower end for removably mounting on the lower clamp such that the rod string is contained therein and rotation of the lower clamp by the driving means rotates the inner sleeve. A tubular outer sleeve having an upper end and a threaded inner surface is mounted about and threadably engaged with the inner sleeve.