Well plugging and whipstocking
United States Patent 2509144
US Patent References:
/1188001.html
- - 1188001

Hydraulic plug and whipstock
- - 1821426

Whip stock
- - 1835227

Whipstock
- - 1923448

Deep well whipstock
- - 1951638


Inventors:
Grable, Donovan B.
Jackson, John M.
Publication Date:
05/23/1950
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Assignee:
Grable, Donovan B.
Jackson, John M.
Primary Class:
175/81
Other Classes:
166/117.600, 175/83
International Classes:
E21B7/08
US Patent References:
2179832Method for orienting drill stems
2222014Well packing device
2281414Combined bridge plug and drilable whipstock