Energy - põhjalik referaat energiast
D seismic technologies, make it possible to discover oil reserves while drilling fewer wells.
Plus, the use of horizontal and directional drilling make it possible for a single well to
produce oil from much bigger areas. Today's production footprints are only about one-
fourth the size of those 30 years ago, due to the development of movable drilling rigs and
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smaller "slimhole" drilling rigs. When the oil in a well is gone, the well must be plugged
below ground, making it hard to tell that it was ever there. As part of the "rig-to-reefs"
program, some old offshore rigs are toppled and left on the sea floor to become artificial
reefs that attract fish and other marine life. Within six months to a year after a rig is
toppled, it becomes covered with barnacles, coral, sponges, clams, and other sea creatures.
If oil is spilled into rivers or oceans it can harm wildlife
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