Money and brains

摘要

Unconventional gas,by definition,is difficult-to-produce gas that requires some sort of artificial stimulation to flow at commercial rates.Because of this,there has been much research and field experimentation on fracturing technologies that will work on the thinner,often complex unconventional gas zones of western Canada. In the Horseshoe Canyon,producers quickly discovered a high-pressure nitrogen fracture could make gas flow at commercial rates.With that technique well entrenched,efforts are now turning to the shallow,immature shales covering much of the Western Canadian Sedimentary Basin.