Title:
Hydraulic actuated drill collar
United States Patent 3105561
Inventors:
Kellner, Jackson M.
Publication Date:
10/01/1963
Export Citation:
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Assignee:
JERSEY PROD RES CO
Primary Class:
175/230
Other Classes:
92/48, 92/105, 92/150, 173/72, 175/27, 175/325.2, 299/31
International Classes:
E21B44/00; E21B44/00
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US Patent References:
2946578Excavator apparatus having stepper type advancing means
2937007Well drilling system
2901044Pulling tool
2877822Hydraulically operable reciprocating motor driven swage for restoring collapsed pipe
2743781Hydraulic anchor tool
2712920Torque arrestors
2684835Apparatus for drilling well boreholes
2537413Pulling tool
2474453Hydraulic fishing tool
2223645Well and the like sinking apparatus
1983287Drilling structure and circulating pump
0556718N/A