Subsea casing hanger suspension system
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United States of America Patent
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-
Jun 17, 1986
Grant Date -
N/A
app pub date -
Sep 26, 1983
filing date -
Sep 26, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A subsea well casing suspension system whereby each of a plurality of concentric casing strings and its hanger is directly and totally supported on the wellhead housing, independently of all the other strings and their hangers, by a plurality of load ring slips that are components of a packoff assembly for an earlier installed casing string. When the packoff assembly is pressure tested following its installation, the load ring slips rise off the assembly and expand into their mating wellhead housing groove wherein they function to transmit the total hang load of the next casing string and hanger directly to that housing.
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