Small-angle drill-hole whipstock
United States Patent 3075583
US Patent References:
Oil well straightener
- - 2316409

Anchoring means for whipstocks
- - 2445100

Well-drilling apparatus
- - 2498192

Redirecting deflected boreholes
- - 2950900


Inventors:
Nielsen, Dale E.
Olsen, James L.
Bennett, Walter P.
Publication Date:
01/29/1963
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Assignee:
Nielsen, Dale E.
Olsen, James L.
Bennett, Walter P.
Primary Class:
166/117.500
Other Classes:
175/82, 175/81
International Classes:
E21B7/08