US PATENT SUBCLASS 166 / 352
.~.~ Surface vessel

Current as of: June, 1999
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166 /   HD   WELLS

335  DF  SUBMERGED WELL {10}
351  DF  .~ Means removably connected to permanent well structure {7}
352.~.~ Surface vessel {3}
353  DF  .~.~.~> Having means to move vessel to precise location
354  DF  .~.~.~> Having means to hold vessel at given location (e.g., anchor, etc.)
355  DF  .~.~.~> With means to compensate for vessel movement

DEFINITION

Classification: 166/352

Surface vessel:

(under subclass 351) Process or apparatus including structure adapted to buoyantly rest upon the surface of the water above the well.

SEE OR SEARCH THIS CLASS, SUBCLASS:

358, for well drilling including floating of a buoyant derrick to the well site.