Class_4-1

Class_4-1 - Condensates Why Cycling? Increase liquid...

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OUTLINE Review Homework # 3 Gas Reservoirs Liquid Equivalent for Gas Reservoirs Gas Condensate Reservoirs Background Initial Hydrocarbon In-Place Recovery methods Field Example – Margham, Dubai, UAE Discuss Homework # 4
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Know how to convert liquids (condensate and water) to their gas equivalents For gas condensate reservoirs Identify production characteristics Describe key aspects phase behavior on performance Calculate the two-phase z factor Calculate the initial-hydrocarbon in-place Understand recovery mechanisms for gas condensate reservoirs Expansion Cycling Objectives
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Well Fluid Reservoir Primary Separator G ps G st Stock Tank Separator G p (surf) Gas Prod N p (surf) Condensat e Prod Gas Condensate Example
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Well Fluid Reservoir Primary Separator G ps G st Stock Tank Separator G p (surf) Gas Prod N p (surf) Condensat e Prod Gas Condensate Injection Example
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Gas
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Unformatted text preview: Condensates Why Cycling? Increase liquid recovery No gas market but liquid market Process Benefits Miscible displacement of wet gas Maintain pressure Extracts heavier components (liquid) Additional expenses: wells, compression facilities, extraction facilities (LTS, cryoplant) Need to evaluate the economics: added revenue more than offsets added costs Gas Condensates Recovery Factor = Displacement Efficiency (E d ) * Areal Sweep E a * Areal Sweep E v E d = normally is 100% Unfavorable mobility ratio M = ( K rgd / gdisp ) / ( K rgw / ginplace ) = (1 / 0.02 ) / (1 / 0.03) = 1.5 M < 1 favorable M > 1 unfavorable Location Map Well Locations Type Log Reservoir Description Fluid Properties Cycle / Blowdown / Modify? Full or Partial Blowdown?...
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Class_4-1 - Condensates Why Cycling? Increase liquid...

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