The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 17, 1986
Filed:
Sep. 26, 1983
Applicant:
Inventors:
Charles E Jennings, Houston, TX (US);
Bob C Hopkins, Houston, TX (US);
Assignee:
FMC Corporation, Chicago, IL (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B / ; F16L / ;
U.S. Cl.
CPC ...
166382 ; 166217 ; 285141 ;
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.