A method for enhancing gas or oil production by delivering a nitrogen rich gas produced from a non-cryogenic source into the well and/or reservoir where the gas and/or oil is located....http://www.google.es/patents/US6443245?utm_source=gb-gplus-sharePatente US6443245 - Non-cryogenic nitrogen for on-site downhole drilling and post drilling operations
Non-cryogenic nitrogen for on-site downhole drilling and post drilling ...
