06920926 is referenced by 17 patents and cites 12 patents.

A well casing system is disclosed for the handling and make-up of casing on a drilling rig in conjunction with a top drive is disclosed. The system comprises a top drive, a casing make-up assembly, links, link tilts, and transfer and lifting elevators. The operator can remotely manipulate the elevators to pick up and position a joint of casing above the casing already secured in the drilling hole. The operator can then engage the gripper head and use the rotational capability of the top drive to remotely couple the two joints of casing together.

Title
Top drive well casing system
Application Number
10/758975
Publication Number
6920926 (B2)
Application Date
January 16, 2004
Publication Date
July 26, 2005
Inventor
Beat Kuttel
Spring
TX, US
Allan S Richardson
Spring
TX, US
Lemuel T York
Montgomery
TX, US
Agent
Baker Botts L
Assignee
Canrig Drilling Technology
TX, US
IPC
E21B 019/06
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