Auxiliary workover rig

Details Auxiliary workover rig Auxiliary workover rig

1984-07-23

1987-08-04

Werner, Frank E.

Material or article handling

Well pipe or rod racking mechanism

With slope change

166 775, 166 85, 175 52, 175 85, 414745, 52117, 212183, 212188, E21B 1900

Patent

active

046843060

ABSTRACT:
An auxiliary rig is used in combination with a primary drilling or workover rig. The primary drilling rig typically includes an elongated upstanding drill tower, a base and a crown block. The auxiliary rig of the present invention includes a racking tower detachably mounted with the upper end of the drill tower to form an extension to the drill tower for receiving interconnected pairs of tubular members to reduce the tripping time of the tubular members into and out of the well. A movable slip and controller therefor of the auxiliary rig are operably guided by the racking tower for releasably supporting the pairs of tubular members.

REFERENCES:
patent: 848304 (1907-03-01), Hines
patent: 2690268 (1954-09-01), Woolslayer et al.
patent: 3177944 (1965-04-01), Knights
patent: 3708024 (1973-01-01), Back
patent: 3768663 (1973-10-01), Turner, Jr. et al.
patent: 3942593 (1976-03-01), Reeve, Jr. et al.
patent: 3949883 (1976-04-01), Crouke et al.
patent: 3960360 (1976-06-01), Elliston
patent: 3976207 (1976-08-01), Schultz
patent: 4230190 (1980-10-01), Guinn et al.

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