04591006 is referenced by 33 patents and cites 9 patents.

A fully mobil and totally contained well servicing and drilling rig is disclosed having equipment on the rig for automatically handling well elements (pipe, tubing and rods) going into and coming out of a well. The rig provides well element storage racks, cranes for moving well elements onto and off the tracks, transfer means for moving well elements from horizontal to vertical position, well element conveying means for moving elements to and from the transfer means, an automatic manipulator for moving elements into alignment with the well being serviced, automatic hoisting means, means for connecting and disconnecting elements from the element string within the well, driving means for all of the equipment, and control means for sequencing and operating all of the means so that the entire well servicing or drilling can be accomplished without human handling of well elements in the vicinity of the well head and rig.

Title
Well servicing rig
Application Number
247674
Publication Number
4591006
Application Date
September 29, 1982
Publication Date
May 27, 1986
Inventor
James E Hansen
Bakersfield
CA, US
Paul V Oldershaw
Bakersfield
CA, US
Stanley O Hutchison
Bakersfield
CA, US
Agent
E J Keeling
J A Buchanan Jr
Assignee
Chevron Research Company
CA, US
IPC
E21B 19/20
View Original Source