The invention discloses a drilling
coring device and method as well as an offshore
floating platform. The offshore
floating platform comprises the drilling
coring device. The drilling
coring device comprises a drilling floor, a derrick, a
traveling block, a
top drive suspended on the
traveling block, a lift
winch for lifting and lowering the
traveling block and the
top drive, a
drill rod connectedto the
top drive and a coring
winch, the traveling block and the top drive each are provided with a central through hole capable of allowing a coring
barrel to pass therethrough, the central throughhole of the traveling block and the central through hole of the top drive are concentrically arranged, a steel cable of the coring
winch sequentially penetrates through the central through hole of thetraveling block, the central through hole of the top drive and the central through hole of the
drill rod from top to bottom, and the
tail end, with
fishing equipment, of the steel cable goes deep into the bottom end of the
drill rod so as to be connected with the coring
barrel. According to the drilling coring device and method as well as the offshore
floating platform, a large amount of manpowerand labor cost are saved, and the operation capacity and efficiency are improved.