Hydraulic and earth engineering – Fluid control – treatment – or containment – Floatable matter containment
Patent
1979-10-01
1981-08-11
Novosad, Stephen J.
Hydraulic and earth engineering
Fluid control, treatment, or containment
Floatable matter containment
166364, 405203, 405209, 405210, 405211, E02B 300, E02B 1504, E02B 1702, E21B 4301
Patent
active
042831598
ABSTRACT:
This invention provides means and methods for servicing offshore oil wells under routine and emergency conditions. Thus, a protective shroud surrounding the well site and provided with pumping means can be used to recover spilled oil, store oil, extinguish blowouts and fires, and protect rigs, platforms and personnel.
A hollow shroud structure, preferably of circular cross section surrounding an oil well and its rigging therefore by means of underwater pumps can be positioned, filled, emptied or otherwise manipulated in servicing the well. It serves to protect the well from heavy seas and floating objects.
Servo controlled valves, jets and pumps can locate the structure precisely in place even during blowout conditions for normal or emergency collection of oil and control of the well conditions.
The shroud structure may be erected before or after drilling and can be moved and reused at different sites. It may have a closed top or open top, and a closed top version may be disposed entirely under water.
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Johnson Albert O.
Personette David
Brown Laurence R.
Novosad Stephen J.
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