Oil collector for subsea blowouts

Details Oil collector for subsea blowouts Oil collector for subsea blowouts

1981-10-16

1984-06-26

Purser, Ernest R.

Wells

Submerged well

Means removably connected to permanent well structure

166364, 166367, E21B 4301

Patent

active

044560710

ABSTRACT:
A collector apparatus and collection method for use with a blown-out seabottom wellhead. The collector apparatus, including a collector element with an extended, open base and an upper portion enclosing a volume to receive fluid (substantial quantities of gas and lesser quantities of oil) rising, in the water, from the wellhead, and a riser connected to the collector element and extending thereabove to conduct fluid therefrom, is characterized in that the collector element is adapted for fixable attachment to the ocean floor about the seabottom well head prior to any blow-out, and the upper portion of the collector element further includes a relief passage from its interior to the exterior of the collector apparatus, the release passage adapted to vent excess gas from the collector apparatus during initial stages of any blow-out. In preferred embodiments, the relief passage is valved to allow the passage to be closed after the initial stages of any blow-out to limit escape of released oil and reduce the amount of water collected and the collector includes a drilling port adapted to allow drilling operations to proceed therethrough.

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PCT/NO80/00034, Ostlund, Published May 14, 1981.

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