07445050 is referenced by 13 patents and cites 87 patents.

An apparatus is disclosed for handling a tubular segment, coupling the tubular segment with a tubular string, and handling the tubular string in a well bore. The apparatus has a tubular engagement assembly, which connects to a drive shaft of a top drive. The tubular engagement assembly has a self-engaging ball and taper assembly that releasably engages the tubular segment. When the tubular engagement assembly connects to the drive shaft and the ball and taper assembly engages the tubular segment, any rotation in the drive shaft results in rotation of the tubular segment. This rotation allows the tubular segment to engage the tubular string.

Title
Tubular running tool
Application Number
11/410733
Publication Number
7445050 (B2)
Application Date
April 25, 2006
Publication Date
November 4, 2008
Inventor
Faisal J Yousef
Houston
TX, US
Graham Lamb
The Woodlands
TX, US
S Casimir Sulima
Spring
TX, US
Brian C Ellis
Spring
TX, US
B Beat Kuttel
The Woodlands
TX, US
Agent
Haynes and Boone
Assignee
Canrig Drilling Technology
TX, US
IPC
E21B 19/16
View Original Source