A SMALL-ANGLE DRILL-HOLE WHIPSTOCK
Patent
·
OSTI ID:4723072
A small angle whipstock is described for accurately correcting or deviating a drill hole by a very small angle. The whipstock is primarily utilized when drilling extremely accurate, line-of-slight test holes as required for diagnostic studies related to underground nuclear test shots. The invention is constructed of a length of cylindrical pipe or casing, with a whipstock seating spike extending from the lower end. A wedge-shaped segment is secured to the outer circumference of the upper end of the cylinder at a position diametrically opposite the circumferential position of the spike. Pin means are provided for affixing the whipstock to a directional drill bit and stem to alloy orienting and setting the whipstock properly in the drill hole. (AEC)
- Research Organization:
- Originating Research Org. not identified
- NSA Number:
- NSA-17-008582
- Assignee:
- U.S. Atomic Energy Commission
- Patent Number(s):
- US 3075583
- OSTI ID:
- 4723072
- Country of Publication:
- United States
- Language:
- English
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