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

1991-02-13

1992-05-05

Novosad, Stephen J.

Boring or penetrating the earth

With tool drive prime mover or above-ground mechanical...

175207, 175219, 175 85, 173184, E21B 702

Patent

active

051099349

ABSTRACT:
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.

REFERENCES:
patent: 3650339 (1972-03-01), Selfe et al.
patent: 4547109 (1985-10-01), Young et al.
patent: 4899832 (1990-02-01), Bierschied, Jr.

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