US Patent 7578349 Lightweight and compact subsea intervention package and method
Patent 7578349 was granted and assigned to Worldwide Oilfield Machine on August, 2009 by the United States Patent and Trademark Office.
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The present invention discloses apparatus and methods for a lightweight subsea intervention package that may be installed using vessels with a smaller lifting capacity than semi-submersible platforms so that the subsea intervention package can be transported, installed, and removed from a subsea well in less time and with less cost. In one embodiment, the present invention comprises a lower riser package for controlling the subsea well which utilizes two hydraulically activated gate valves. An emergency disconnect package is secured to the lower riser package utilizing a disconnect mechanism. The emergency disconnect package is operable to seal the bottom of a riser if the disconnect mechanism is activated to thereby minimize environmental leakage of fluid from the riser.
US Patent 07578349 Lightweight and compact subsea intervention package and method US Patent 7578349 Lightweight and compact subsea intervention package and method
US Patent 07578349 Lightweight and compact subsea intervention package and method
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