Title:
Drilling and lining of drain holes
United States Patent 2797893
US Patent References:
Method and equipment for multiple whipstock drilling and lining
- - 2211803
Well casing for lateral bores
- - 2397070
Whipstock
- - 2555462
Method and equipment for multiple whipstock drilling and lining
- - 2211803
Well casing for lateral bores
- - 2397070
Whipstock
- - 2555462
Inventors:
Mccune, John S.
Hanks, William E.
Hanks, William E.
Publication Date:
07/02/1957
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Export Citation:
Assignee:
OILWELL DRAIN HOLE DRILLING CO
Primary Class:
Other Classes:
175/61, 166/50, 166/117.500, 175/79, 166/313
International Classes:
E21B7/08