Consider a 2-km-deep gas well containing a gas mixture of methane and ethane at a uniform temperature

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Consider a 2-km-deep gas well containing a gas mixture of methane and ethane at a uniform temperature of 30oC. The pressure at the top of the well is 14 MPa, and the composition on a mole basis is 90% methane, 10% ethane. Each component is in equilibrium (top to bottom) with dG + g dZ = 0 and assume ideal gas, so for each component Eq.15.10 applies. Determine the pressure and composition at the bottom of the well.
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Fundamentals of Thermodynamics

ISBN: 978-0471152323

6th edition

Authors: Richard E. Sonntag, Claus Borgnakke, Gordon J. Van Wylen

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