Wells – Expansible anchor or casing – Liner hanger
Patent
1989-05-12
1990-05-22
Dang, Hoang C.
Wells
Expansible anchor or casing
Liner hanger
1661177, 166212, 166217, 166286, E21B 2300
Patent
active
049269380
ABSTRACT:
A multiple cone, multiple bearing liner hanger for hanging a well liner for extension of the casing liner. The multiple slip cone and multiple bearing arrangement provides uniform, positive distribution of liner weight thereby facilitating hanging of heavier liner strings. The multiple bearings ensure proper rotation of the liner during cementation. The multiple cone, multiple bearing liner hanger includes an upper slip assembly with an associated bearing and a lower slip assembly with an associated bearing. The hanger is hydraulically set by first setting the upper slips and thereafter setting the lower slips. A series of shear pins ensure proper setting of the hanger to distribute the hang weight evenly over the slip cones and bearings.
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Dang Hoang C.
Lindsey Completion Systems, Inc.
Sutherland Malcolm L.
Zarins Edgar A.
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