Drill rig

Details Drill rig Drill rig

E - Fixed Constructions

21

B

255/17

E21B 15/00 (2006.01) E21B 7/02 (2006.01)

Patent

CA 1158229

ABSTRACT The invention relates to a mobile drilling rig providing a rotation head which is small enough to fit between the mast members of the rig. Arrangements are made to pivot back the rotation head to give access to the drill line of the rig. The mast members can be pivotted on a frame to place them into the drilling and travelling position respectively.

360035

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