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 |