The sale to an undisclosed private buyer fetched about $71 million for Synergy.

The assets include production of around 700 barrels of oil equivalent per day.

Synergy was unlikely to drill the acreage in the next few years and considered it a non-core holding, chief executive Lynn Peterson said.

Analysts pointed out that the area had a lower gas-to-oil ratio, which often correlates to less productive wells, than core areas in the Denver-Julesburg basin.

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