These three companies make drilling more efficient-and a gusher of profits. INVESTING IN THE oil and gas business has become about as tough as heading out West and hoping to strike black gold all on your own. But there's one sliver of the industry that's shaking some opportunities loose - for both drillers and investors. Before drilling, exploration and production companies now routinely obtain something known as a seismic survey to figure out the most advantageous and economical way to tap new reserves and eke more out of existing wells.
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