Method for perforating a well
United States Patent 3195631

Inventors:
Smith, Francis M.
Publication Date:
07/20/1965
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Assignee:
GULF RESEARCH DEVELOPMENT CO
Primary Class:
166/297
Other Classes:
166/183, 166/311, 417/73
International Classes:
E21B43/119; E21B43/11
US Patent References:
1894587Manufacture of fertilizer
2895554Method and apparatus for perforating well casings
3019839Method for relieving hydrostatic pressure in oil recovery from wells
3104707Freeing pipe stuck in a borehole