Outer device for universal inspection of risers

Details Outer device for universal inspection of risers Outer device for universal inspection of risers

2011-08-23

2011-08-23

Lagman, Frederick L (Department: 3672)

Hydraulic and earth engineering

Marine structure or fabrication thereof

Structure protection

C405S211100, C405S216000

Reexamination Certificate

active

08002501

ABSTRACT:
This invention refers to a device that has a direct applicability in the oil industry, detecting on a prevention basis, failures that may be externally visualized on the walls of the risers. Externally coupled to a pipe in free catenary, called riser, the device involves such a pipe in its entire perimeter and allows for the making of non-destructive inspections of several natures concurrently, while the device moves along all its extension. The device moves along the riser downwards and upwards by a combination of gravity, buoyancy, thrusters and action of expansion of gases.

REFERENCES:
patent: 6371696 (2002-04-01), Eathorne
patent: 2009/0217946 (2009-09-01), Anthony
patent: 2009/0217954 (2009-09-01), Hall
patent: 2010/0163239 (2010-07-01), Angel et al.
patent: 200605010 (2008-07-01), None

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