Diamondback Energy, a major player in the shale oil industry, has announced its acquisition of certain units of Double Eagle Energy. The deal, valued at approximately $4.08 billion, will be settled through a combination of cash and stock.

Diamondback Energy said on Tuesday it would buy certain units of EnCap Investments-backed energy producer Double Eagle for $4.08 billion in cash and stock, expanding its presence in the oil-rich U.S.

Diamondback Energy's buyout of Double Eagle could signal the winding down of the rapid consolidation of the Permian Basin over the last half decade.