| 摘要 |
There is provided a drilling rig for drilling into a particulate surface such as a sea floor. The drilling rig includes a drilling arrangement that fluidises particles in the particulate surface using high pressure water jets, and conveys them to the sea surface by use of the buoyancy of air bubbles that are bubbled into a conveyancing conduit. The drilling rig includes buoyant air bags that assist in removing the drilling arrangement from the seabed, and buoyant air bags that assist in floating the rig to the surface for loading onto a vessel. |
