Abstract
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 language | English (US) |
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Pages | 725-738 |
Number of pages | 14 |
State | Published - 1995 |
Event | Proceedings of the 1995 SPE Annual Technical Conference and Exhibition - Dallas, TX, USA Duration: Oct 22 1995 → Oct 25 1995 |
Other
Other | Proceedings of the 1995 SPE Annual Technical Conference and Exhibition |
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City | Dallas, TX, USA |
Period | 10/22/95 → 10/25/95 |
All Science Journal Classification (ASJC) codes
- Fuel Technology
- Energy Engineering and Power Technology