FIELD: supports for the drilling machines, particularly adapted for underwater well drilling.
SUBSTANCE: method involves lowering upper and lower base sections, as well as driving tool through drilling U-shaped opening of catamaran. Anvil and driving tool are rectangular and have predetermined side dimension ratio. Main driving tool mass is located at short driving tool sides.
EFFECT: increased efficiency of well drilling from floating vehicle having small drilling opening, increased efficiency of impact energy transfer from driving tool to lower base section piles along with possibility to retain physical ground properties in well for following ground sample taking.
2 cl, 3 dwg
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