PETE311_06A_Class15_(Maggard)

PETE311_06A_Class15_(Maggard) - Laboratory Determination of...

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Laboratory Determination of Fluid Saturations
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Conventional Core Analysis • Two common methods will be discussed – Retort Distillation – Solvent Extraction
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Retort Distillation Apparatus Cooling water out Cooling water in Condenser Core sample Heating element 1000-1100 ° F Graduated Cylinder
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Retort Distillation Method • Advantages – Rapid (less than one hour) – Direct measurement of both oil and water volumes recovered – Adequate accuracy
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Retort Distillation Method • Disadvantages – High temperatures (1,000 - 1,100 ° F): • destroys core sample • water of crystallization in clays may vaporize – and must be accounted for • cracking and coking of oil – cracking is breaking of long chain hydrocarbons into smaller chain hydrocarbons, which may not be recondensed – coke is impure carbon residue formed from oil
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• Water from pores is recovered first – If flattening of curve is not apparent then estimating water recovered from pore
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PETE311_06A_Class15_(Maggard) - Laboratory Determination of...

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