Wells – Expansible anchor or casing – Liner hanger
Patent
1983-06-27
1984-12-25
Leppink, James A.
Wells
Expansible anchor or casing
Liner hanger
166216, 166217, E21B 2300
Patent
active
044897812
ABSTRACT:
A setting tool for setting a well tool, such as a mechanical liner hanger, inside of a well conduit by right-hand or clockwise rotation. A setting tool supports a well tool by a running nut having left-handed external threads and includes a setting nut for setting the well tool. Both nuts are positioned on an elongate member which includes an out-of-round external contour for rotating each of said nuts and includes a round contour for selectively rotating only the supporting nut for disengaging the tool by right-hand rotation after setting the well tool. An improved right-hand set mechanical liner includes internal threads for supporting the mandrel from a setting tool and includes one or more upwardly extending notches for receiving and being rotatively set by setting tool. A liner hanger includes a mandrel with two lugs moving against a downwardly directed surface of a cage for moving slips upwardly onto a cone on the mandrel and expanding the slips into a setting engagement with the well tool.
REFERENCES:
patent: 1892442 (1932-12-01), Wickersham
patent: 3136367 (1964-06-01), Wright et al.
patent: 3171490 (1965-03-01), States
patent: 3171491 (1965-03-01), States
patent: 3223170 (1965-12-01), Mott
Dang Hoang C.
Leppink James A.
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