Big oil is raking in cash so investors are asking: Now what?

A technician walks through a well house at the Caelus Energy LLC Oooguruk Development Project in Harrison Bay, Alaska, U.S., on Friday, Feb. 17, 2017. Four decades after the Trans Alaska Pipeline System went live, transforming the North Slope into a modern-day Klondike, many Alaskans fear the best days have passed. Photographer: Daniel Acker/Bloomberg
A technician walks through a well house at the Caelus Energy LLC Oooguruk Development Project in Harrison Bay, Alaska, U.S., on Friday, Feb. 17, 2017. Four decades after the Trans Alaska Pipeline System went live, transforming the North Slope into a modern-day Klondike, many Alaskans fear the best days have passed. Photographer: Daniel Acker/Bloomberg

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