Abstract The invention relates to an oil confining enclosure for an offshore oil well to provide a barrier against the escape of oil leaking from the drilling operation and includes a floating, generally circular, confining wall encircling an offshore well site and which is supported on a series of interconnected pontoons having operative connection with a floating platform, exteriorly of the confining wall, providing control valves for the connections to the pontoons whereby a vessel may approach the floating platform and by means of the valved connections to the pontoons cause the pontoons to be filled with sea water to sink the confining wall below the level of the sea for access by the vessel to the drilling rig and on the way out again connect with the floating platform valves to blow the water out of the pontoons for the flotation of the circular confining wall.
An offshore oil well enclosure for confining leaking oil from the well comprising a generally circular wall surrounding said well, means for floating said wall in a body of water, including a plurality of pontoons operatively connected to the wall, means for sinking said wall beneath the level of said body of water, means to anchor the floating circular wall to the floor beneath said body of water in generally concentric relation to said well, said means for sinking said wall including floating valve mechanism located exteriorly of said wall and one or more connecting lines from said valve mechanism to said pontoons, said pontoons being located around a face of said wall and interconnected by a pair of lines providing communication between all of the pontoons, said connecting lines from said valve mechanism having communication with the pair of lines interconnecting the pontoons, said valve mechanism being mounted on a floating platform locateD outside said circular wall whereby a vessel may approach said platform mechanism to sink said wall for access to said well, said circular wall being comprised of a series of plates secured together to provide a continuous enclosure around said well for confining oil on the surface of said body of water and said plates being permanently secured together by welding their respectively adjoining edges to each other, and said pontoons encircle said wall and are supportingly mounted on the outside face of the wall.
Claim 2
Dependent Claim
239 words
An offshore oil well enclosure for confining leaking oil from the well comprising a generally circular wall surrounding said well, means for floating said wall in a body of water, including a plurality of pontoons operatively connected to the wall, means for sinking said wall beneath the level of said body of water, means to anchor the floating circular wall to the floor beneath said body of water in generally concentric relation to said well, said means for sinking said wall including floating valve mechanism located exteriorly of said wall and one or more connecting lines from said valve mechanism to said pontoons, said pontoons being located around a face of said wall and interconnected by a pair of lines providing communication between all of the pontoons, said connecting lines from said valve mechanism having communication with the pair of lines interconnecting the pontoons, said valve mechanism being mounted on a floating platform locateD outside said circular wall whereby a vessel may approach said platform mechanism to sink said wall for access to said well, said circular wall being comprised of a series of plates secured together to provide a continuous enclosure around said well for confining oil on the surface of said body of water and said plates being permanently secured together by welding their respectively adjoining edges to each other, and said pontoons encircle said wall and are supportingly mounted on the outside face of the wall.
Claim 3
Dependent Claim
37 words
An offshore oil well enclosure as set forth in claim 1 wherein said means to anchor the floating circular wall includes a plurality of chains connected to said wall and to anchor devices secured to said floor.
Claim 4
Dependent Claim
34 words
An offshore oil well enclosure as set forth in claim 1 wherein signal transmitting means is provided on said enclosure on the inside face of said wall to signal the presence of oil therein.