Rival North Dakota shale drillers Oasis Petroleum Inc. and Whiting Petroleum Corp. said Monday they have reached a deal to merge, forming a combined company that they valued at $6 billion including debt.
The deal, first reported by The Wall Street Journal late Sunday, marks the first significant tie-up among oil companies in several months, after a string of them in recent years, and comes as Russia’s invasion of Ukraine roils energy markets and causes crude prices to surge.
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