Abstract
Summary A method is proposed to calculate the areal compositional variations in large hydrocarbon reservoirs in the presence of thermal gradients. A model is developed from the fundamental equations of change for a multicomponent reservoir fluid mixture in a porous medium. The fluxes are obtained from nonequilibrium thermodynamics, and expressions are derived for mass diffusion coefficients. The thermodynamic properties are calculated by use of the Peng-Robinson equation of state (PR-EOS). Under the condition of stationary state, the governing equations are solved by use of the least-squares finite-element method (LSFEM) subject to specified sampling concentrations as data at several well sampling sites. The results are in good agreement with validation simulations based on a similar finite difference solution.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
