A Combined Condensing/Vaporizing Mechanism in the Displacement of Oil by Enriched Gases
Комбинированный механизм конденсации/испарения при вытеснении нефти обогащенными газами
1986-10-05
SCID: 54.1/kta7gzk4
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condensing-gas drivecondensing/vaporizing-gas driveenriched gasesminimum miscibility pressureminimum solvent enrichment
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Abstract (AI)
ABSTRACT Experimental observations, combined with equation-of-state predictions, indicate that a combined condensing/vaporizing-gas drive mechanism, rather than the traditionally believed condensing-gas drive mechanism, may be responsible for displacements of reservoir oil by enriched gases. Apparent minimum miscibility pressures and minimum solvent enrichments are observed with this mechanism, even though true miscibility is probably not developed.
Key Findings
1
Apparent minimum miscibility pressures (MMP) and minimum solvent enrichments are observed under the combined mechanism despite probable absence of true miscibility.
2
Experimental observations and equation-of-state predictions indicate a combined condensing/vaporizing-gas drive mechanism can drive displacement of reservoir oil by enriched gases.
3
This combined mechanism, not the traditionally believed condensing-gas drive, may be responsible for observed oil displacements.
4
True miscibility is probably not developed even when the displacement exhibits characteristics (MMP and solvent enrichment) similar to miscible displacement.
Research Object
Displacement of reservoir oil by enriched gases
Research Subject
Combined condensing/vaporizing gas-drive mechanism (including apparent minimum miscibility pressures and minimum solvent enrichments) governing oil displacement
Publication Details
Publication Date
1986-10-05
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