l2 phase diagram applications
DESCRIPTION
phase diagram applicationsTRANSCRIPT
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Uses of Phase Diagrams in Solvent FloodingPseudoternary Graphs
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Uses or Phase Diagrams in Solvent FloodingHow does solvent flooding work ? HighlightsGeneral overview of solvent methods.Mechanisms of oil displacement using Phase DiagramsHydrocarbon miscible displacementFirst Contact Miscible process, Condensing-Gas process, Vaporizing-Gas process. Minimum miscibility pressure (MMP).
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Introduction to Solvent FloodingSolvents are injected in the reservoir to displace oilSolvent injection can result in Miscible Displacement (1-phase) Immiscible Displacement (2-phases)
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Potential SolventsThe number and type of potential solvents is very large. Typical solvents are,
Gas: nitrogen, flue gas, methane, carbon dioxide
Liquid solvents: liquefied petroleum gas (LPG), organic alcohols
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Solvent Flooding Fundamentals
Primary means for recovering oil is through mass transfer or extraction.
Several modes of injecting the solvent into the reservoir (Continuous or pattern flooding, WAG, etc)
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Phase Envelope and Tie Lines.9.8.7.6.5.4.3.2.1.1.2.3.4.5.6.7.8.91.1 .2 .3 .4 .5 .6 .7 .8 .9001C1C10n-C4CPMixture GasLiquid
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Whats Miscible & Immiscible?.9.8.7.6.5.4.3.2.15.6.7.8.9001LightHeavyIntermediateOilM1S1S2G2M2L2.9.8.7.6.5.4.3.2.15.6.7.8.9001LightHeavyIntermediateOilM1S1S2G2M2L2
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Effect of Pressure on Miscibility
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First Contact Miscible Recovery Processes (FCM)
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Developed or Dynamic MiscibilityCritical Tie Line1-Vaporizing Gas Drive Process2-Condensing Gas Drive Process
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Miscible Gas Injection
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Vaporizing Gas Drive Miscibility Mechanism
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(P,T)
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Vaporizing Gas Drive ProcessAs long as the reservoir oil composition lies on, or to the right of, the limiting tie line, miscibility with a gas that has a composition lying to the left of the limiting tie line can be achieved by the vaporizing gas drive process.
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Additional MaterialsPETE 609 (Enhanced Oil Recovery Methods) Graduate class in Petroleum Engineering Texas A&M University