Tool and method for removing gas hydrates from the surface of subsea oil and gas exploration and production equipment through laser radiation
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United States of America Patent
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Aug 14, 2018
Grant Date -
Jun 16, 2016
app pub date -
Oct 18, 2013
filing date -
Oct 18, 2012
priority date (Note) -
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Abstract
A tool and related method for removing unwanted gas hydrates from the surface of equipment used in subsea exploration and production. The tool includes a main vessel and a power cable linked together by a connector. Inside the vessel a laser device is connected to an adjustable focus collimator by a cable, with the wavelength emitted by the laser being between 200 nm and 930 nm. When the radiation reaches the subsea exploration equipment it causes the heating thereof, which in turn heats the hydrate through conduction, breaking down the hydrate formation from the inside out. The front lid of the tools includes a window fitted with anti-reflection film that forms an interface between the vessel and the aqueous medium.
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