Apparatus and methods for providing VIV suppression to a riser system comprising umbilical elements
AssigneeShell Oil Company
InventorsDavid Wayne McMillan, Donald Wayne Allen
Life of this patent
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Abstract
Apparatus for suppressing vortex induced vibrations on a marine element of a riser system wherein the riser system comprises at least one umbilical element. Systems comprising and methods of using said apparatus to suppress vortex induced vibrations. The apparatus, systems, and methods comprise module elements which provide: i) a surface around a marine element for installing VIV suppression devices; and ii) passages for housing the at least one umbilical element.
Claims32
An apparatus for housing umbilical elements of a riser system comprising a cylindrical marine element and at least one umbilical element, the apparatus comprising a substantially tubular module element designed to enclose at least a portion of the circumference of said cylindrical marine element, wherein said substantially tubular module element comprises at least one longitudinal through passage for housing said umbilical element.
A system for suppressing vortex-induced vibration comprising:
- a. a substantially cylindrical marine element;
- b. at least one umbilical element positioned in proximity to said cylindrical marine element;
- and
- c. an apparatus installed on said marine element, wherein said apparatus comprises a substantially tubular module element comprising at least one longitudinal through passage for housing said umbilical element, wherein said substantially tubular module element encloses at least 180 degrees of the circumference of said marine element.
A method for suppressing vortex-induced vibration of a system comprising a substantially cylindrical marine element and at least one umbilical element, the method comprising the steps of:
- a. positioning an apparatus on said marine element, wherein said apparatus comprises a substantially tubular module element comprising at least one longitudinal through passage for housing said umbilical element, wherein said substantially tubular module element encloses at least 180 degrees of the circumference of said marine element.
Dependencies are inferred from the claim text.