Tubular handling apparatus and a drilling rig

Details Tubular handling apparatus and a drilling rig Tubular handling apparatus and a drilling rig

2004-10-07

2010-06-29

Adams, Gregory W (Department: 3652)

Material or article handling

Well pipe or rod racking mechanism

With slope change

C414S022550, C414S783000, C414S742000, C901S021000, C901S022000

Reexamination Certificate

active

07744327

ABSTRACT:
The invention relates to a tubular handling apparatus for moving tubulars between a substantially horizontal transfer station and a second transfer station. The apparatus comprises a base and a boom, rotatable with respect to the base between a lowered position and a raised position by boom rotation drive means in a boom rotation direction around a horizontal boom rotation axis. Furthermore, the apparatus comprises a gripper, rotatably attached to the boom and adapted for gripping the tubular, which gripper is rotatable about a gripper rotation axis by a gripper rotation drive means in a gripper rotation direction. According to the invention, the gripper rotation axis is parallel to and spaced from the horizontal boom rotation axis and in that the gripper rotation drive means provide a gripper rotation direction opposite to the boom rotation direction.

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W. P. Boyle and K. Liu, The Fourbar Linkage: Pseudographic Kinematic Analysis, 1997, TEMPUS Publications, Int. J. Engng Ed. vol. 13, No. 4, pp. 262-268.

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