Wall Street JournalOil Firms Slow Exploration to Weather Low-Price EraWall Street JournalLONDON—The world's biggest oil companies are draining their petroleum reserves faster than they are replacing them—a symptom of how a deep oil-price decline is res …

Oil Prices Climb on Hopes for Output CutbackWall Street JournalNEW YORK—Oil prices rose to a three-week high on hopes that Russia and the Organization of the Petroleum Exporting Countries would cooperate on production cuts. Russia's energy minister sai …

Wall Street JournalChevron, Exxon Cut Spending on Oil Price SlideWall Street JournalAs costs to drill and pump oil and gas continue to fall in the low-price oil environment, the biggest U.S. oil company said it expects to shave another $1 billion off its c …