ABSTRACT
This chapter discusses nitrogen rejection for EOR and for production of pipeline quality gas, leaving a brief discussion of the helium-nitrogen separation to Chapter 14.
The Gas Research Institute’s survey of United States reserves (GRI, 1993) found that approximately 24 Tcf (670 Bm3), 16% of the nonassociated reserves at that time, were subquality in nitrogen and consequently will require blending to lower the nitrogen concentration or processing to remove the nitrogen to meet pipeline specifications (Engineering Data Book, 2004a).
