Mobile drilling rig for closely spaced well centers

Details Mobile drilling rig for closely spaced well centers Mobile drilling rig for closely spaced well centers

E - Fixed Constructions

21

B

E21B 7/02 (2006.01) E21B 15/00 (2006.01) E21B 19/14 (2006.01) E21B 21/01 (2006.01)

Patent

CA 2055030

A modular drilling apparatus having three units, each of which is fully enclosed, transportable and positionable for workover and completion of wells on 30 foot well centers without interfering with the operation of adjacent wells. The first end of the drilling unit is positioned over a well with its central axis diagonal to the centerline of the wells and at a right angle to the pipe handler in the pipe shelter unit, the vertex of the right angle being at the well center. The mud unit is set back from the centerline of the wells, and is functionally connected to the second end of the drilling unit. The width of the drilling unit is greater than 50% of the clearance between adjacent well houses on each side of the well.

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