Theory of multicontact miscible displacement with nitrogen

B. Dindoruk, F. M. Orr, R. T. Johns

Research output: Contribution to conferencePaperpeer-review

2 Scopus citations


Analytical solutions for displacement of mixtures of methane, butane and decane by nitrogen or nitrogen/methane mixtures are used to explain conflicting experimental observations concerning the sensitivity of minimum miscibility pressures to changes in the compositions of an initial oil or the injection gas. The solutions presented show why some investigators have reported weak dependence of the minimum miscibility pressure (MMP) on methane concentrations while others have reported significant sensitivity. The analysis of displacement composition routes indicates that either observation can be correct for some ranges of initial and injection fluid compositions, and shows that the sensitivity behavior depends on the relative positions in composition space of three key tie lines, the initial, injection, and crossover tie lines.

Original languageEnglish (US)
Number of pages14
StatePublished - 1995
EventProceedings of the 1995 SPE Annual Technical Conference and Exhibition - Dallas, TX, USA
Duration: Oct 22 1995Oct 25 1995


OtherProceedings of the 1995 SPE Annual Technical Conference and Exhibition
CityDallas, TX, USA

All Science Journal Classification (ASJC) codes

  • Fuel Technology
  • Energy Engineering and Power Technology


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