Brigham sets production record in Williston Basin

Brigham Exploration announced updated production performance on the Sorenson 29-32 #1H. Subsequent to drilling out frac plugs, the Sorenson produced at an early 24 hour peak flow back rate of 5,133 (4,335 barrels of oil and 4.79 MMcf) barrels of oil equivalent per day, which, based on publicly reported data available to the Company, represents an apparent record production rate for the more than 2,700 horizontal wells in the Williston Basin.

The Sorenson is located in Brigham's Ross project area in Mountrail County, North Dakota and is a long lateral completed with 27 frac stages, perf and plug and ceramic proppant. Brigham maintains an approximate 95% working interest in the Sorenson.

Based on this updated production performance, Brigham has completed five long lateral high frac stage wells in Ross with an average early 24 hour peak flow back rate of approximately 2,980 barrels of oil equivalent per day.