Drill pipe handling

Details Drill pipe handling Drill pipe handling

E - Fixed Constructions

21

B

E21B 19/18 (2006.01) E21B 19/00 (2006.01) E21B 19/16 (2006.01) E21B 23/00 (2006.01)

Patent

CA 2122623

Multi-joint stands (126, 127) of drill pipe are assembled and disassembled in a drilling rig (15) by use of a powered mousehole (11) concurrently with well drilling operations conducted by use of a drill string top drive system (23). The powered mousehole (11) has an upwardly open bowl (45) in a floor (17) of the drilling rig which can be rotated about a vertical axis (55). A pipe joint (110) held in the bowl, and depending from it, can be screwed, with controlled levels of torque, into connection with a second pipe joint (113) suspended vertically above the first joint (110) by a hoist system (13) which is separate from hoisting equipment (19) carrying the top drive system (23) over a well bore (21). The second pipe joint (113) is held from rotation by a tong assembly (12), but can move axially against a yieldable support (40) into threaded connection with the first joint (110).

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