Production of hydrocarbons from tight reservoirs has a long history and traces itself back to the end of 19th – beginning of 20th century, when the natural gas production came from low-pressured fractured shales in Appalachian Basin. However, the lack of technology during that time did not allow operators to produce it with the adequate flow rates. It took almost 60 years for the industry to take a second look at these types of reservoirs, when Mitchell Energy & Development Corporation showed an interest in exploration of Barnett shales for gas production.