Patent ID: 6009941
Filing Date: 2000-01-04
Classification: E21B

Abstract:
Apparatus for axially displacing a downhole tool or a tubing string in a well bore equipped with a wellhead, the downhole tool being supported by the tubing string in the well which includes a telescoping joint to permit the axial displacement of the tool or the tubing string, comprising:a lift rod string;a tool entry spool adapted to be mounted to a top of the wellhead;at least one annular seal for containing well pressure mounted above the tool entry spool, the annular seal providing a fluid seal around a periphery of the lift rod string;means for axially displacing the lift rod string;means for selectively rotating the lift rod string; anda swivel joint for enabling free rotational movement in a link rod between the means for axially displacing the lift rod string and the means for selectively rotating the lift rod string.