MARK MCCOLLUM

McCollum out as Weatherford chief executive

Energy Explored

In a world awash with information, Upstream helps readers filter out the noise and zero in on what matters in the international energy industry. For nearly three decades, we have been the go-to source for independent news and analysis of the major oil and gas projects shaping the industry and the people behind them. In recent years, we also have chronicled the industry’s efforts to transition to cleaner energy sources.

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Leia Marie Parker

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