On April 20, 2010, an and fire occurred on the , which was owned and operated by and drilling for in the about 40 miles (64 km) southeast off the coast. The explosion and subsequent fire resulted in the sinking of the Deepwater Horizon and the deaths of 11 workers.
[pdf] Rotary drilling machine, also known as pile driver. It is a comprehensive drilling rig, for its usage of a variety of bottom layers, the characteristics of fast forming layers, less pollution, and strong mobility.
[pdf] A rotary drilling rig works by rotating a drill string, which applies downward pressure to a drill bit that grinds the earth. Drilling fluid or air is pumped down the drill string to cool the bit, carry cuttings to the surface, and stabilize the borehole.
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