A semi-submersible floating platform for carrying out well drilling and operation operations in locations far from the shore, platform comprising: a plurality of vertically extending stabilizing columns; a hull extending laterally between the stabilizing columns connecting them to each other in a triangular configuration near the lower ends thereof, each of the stabilizing columns containing, at least in its lower part, floatable floatation tanks; pumping means and valve means and means of conduction supported by the platform and in communication between the flotation tanks of the stabilizing columns and the water outside the hull, to flood or empty the flotation tanks at will, the deposits being flooded in enough to lower the hull in the water to the semi-submerged position that is adopted during operations. (Machine-translation by Google Translate, not legally binding)
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