Drawdown

Using an equation of state to predict the effects of producution decline on a reservoir composition.  Also, examining the importance of compositional complexity.

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Setup

Note:  this is the path to the installed EOS packages

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Last Run on:

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The Drawdown experiment

Define a drawdown function that simulates the production of a reservior which results in  lowering of pressure.  The object is twofold:  
1:  to see how density and GOR vary during production, and
2:  to see how the specification of the mixture (i.e., how many pseudo-components used) affects the prediction

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Predictions using all components
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Flash the mixture at repeatedly lower-pressures

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Examine density

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2) predicting using a C15+drawdown

The Function used to produce the compositions is derived here.

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Examine density

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3) predicting using a C7+drawdown
Method

The Function used to produce the compositions is derived here.

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Examine density

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Compare the plots

Compare GOR
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Compare vapor densities
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Converted by Mathematica      May 6, 2002