Apparatus for recovering objects in a well
United States Patent 3095926

Inventors:
Rush, George E.
Publication Date:
07/02/1963
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Assignee:
Houston, Oil Field Material Com
Primary Class:
294/86.180
Other Classes:
294/86.170, 294/86.250, 294/86.340, 166/215, 166/117.700
International Classes:
E21B29/00; E21B31/16; E21B31/20; E21B31/00
US Patent References:
2817555Method and system of retrieving stuck pipe joints in well bores
2832423Apparatus for removing stuck pipe from well bores
2869644Washover tool for use in wells