U.S. oil reserve gains

For the first time in 10 years, in the world's most thoroughly explored and developed producing country, oil reserves-estimated under a system unusual for its rigor and immunity against political manipulation-increased last year. U.S. reserves of natural gas and natural gas liquids rose, too. Ten years ago, who would have thought it possible? Ten years ago, who could have predicted the combined effects on reserves of 3D seismic technology, interactive computer workstations, multidisciplinary teams, horizontal and multilateral drilling, coiled tubing, smart completions, and an ever-expanding catalogue of solutions to the challenges of deep water? Ten years ago, who would h...

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