Oasis Petroleum Inc. is a petroleum and natural gas exploration and production company headquartered in Houston, Texas, with an office in Williston, North Dakota.
The company develops unconventional oil and natural gas oilfields in the Bakken formation and Three Forks Shale of Montana and North Dakota.
As of December 31, 2016, the company had 305 million barrels of oil equivalent (1.87×10 GJ) of estimated proved reserves, of which 78% was petroleum and 22% was natural gas.
In February 2007, the company was founded by Thomas B. Nusz and Taylor L. Reid and was financed by EnCap Investments.
In June 2007, the company acquired 175,000 net acres and 1 thousand barrels of oil equivalent (6,100 GJ) per day of production in Williston, North Dakota for $83 million.
In 2008-2009, the company acquired an additional 131,000 net acres and 1.1 thousand barrels of oil equivalent (6,700 GJ) per day of production nearby for $54 million.
In 2010, the company became a public company via an initial public offering which raised over $400 million.
In 2011, an employee on one of the company's oilfields died due to an accident.
In 2013, the company acquired 161,000 net acres in the Williston Basin for $1.5 billion.
In 2016, the company acquired 55,000 net acres and 226 gross operated drilling locations in the Williston Basin from SM Energy for $785 million.
In 2017, the company completed an initial public offering of its midstream operations.