Patent ID: 6347665
Filing Date: 2002-02-19
Classification: E21B

Abstract:
Apparatus for making up and breaking out tubular member threaded connections, comprising:a) a combined tong and backup unit comprising a power lead tong coupled to a backup tong, said combined tong and backup unit having a vertical axis substantially coincident with a central longitudinal axis of a tubular member when said tubular member is being gripped by said combined tong and backup unit, and, when viewed from above, said combined tong and backup unit being substantially symmetrical and balanced about at least one vertical plane intersecting said vertical axis, and further being substantially bisected by at least one other vertical plane intersecting said vertical axis; and b) a structure supporting said combined tong and backup unit, said structure adapted to in turn mount on a traveling jack head, whereby said combined tong and backup unit travels vertically along with said jack head, said structure being substantially centered about said vertical axis.