| 主权项 |
1. A tool for removing unwanted gas hydrates from the surface of equipment used in subsea oil and gas exploration and production by laser radiation, the tool comprising:
a) a main vessel as its housing, holding a volume V filled with gases including air or nitrogen; b) a power cable inserted in the vessel through a first lid, with the vessel and said cable linked together by a connector; and, inside said vessel, c) a laser device seated on a first base and connected to an adjustable focus collimator seated on a second base by a cable, with the wavelength emitted by said laser and as the water and the hydrate are transparent or semi-transparent thereto, and with said wavelength being between 200 nm and 930 nm, whereby when the radiation reaches said subsea exploration equipment it causes heating thereof, which in turn heats said unwanted gas hydrates through conduction, breaking down said unwanted gas hydrates from the inside out; and d) said second lid including a window providing an interface between the vessel and an aqueous medium, with said window being fitted with anti-reflection film matching a refraction index with said medium inside said vessel and anti-reflection film matching the refraction index of said medium outside said vessel. |
