Posted AT 5:18 AM EDT on 23/05/05
Deep pockets buy into high tech
Calgary — The lime-green pipes and valves at EnCana Corp.'s Weyburn oil field in south Saskatchewan are the only visible sign of the revolution taking place 1,500 metres underground.
A kilometre and a half from the surface, the pipes feed a steady stream of carbon dioxide into the rock containing light oil, pushing it sideways toward a wellhead where it can be pumped above ground.
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