The generation of nitrogen for Enhanced Oil Recovery has reached a degree of sophistication such that almost any size project can be considered. In the past, one limiting factor has been the availability of small (economic) nitrogen producing plants. The recent development of small nitrogen producing plants utilizing membranes has allowed the use of nitrogen to be considered for many new opportunities.

Membrane produced nitrogen can be used in areas where natural gas is not available. For example, it finds instant application in attic oil reservoirs both on-shore and off-shore, where a "huff-and-puff' procedure is applicable. Nitrogen from membrane systems can be used in coal-bed methane projects. Membrane systems, like cryogenic air separation plants, are now available where a "third-party" owns and operates the system on a supply contract.

Nitrogen gas for the oil industry is now more readily available in a greater size range, and for any time period.

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