Semi-analytical Proxy for VAPEX Process Modeling

Semi-analytical Proxy for VAPEX Process Modeling
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By:"Jindong Shi","University of Alberta. Department of Civil and Environmental Engineering"
"Enhanced oil recovery"
Published on 2014 by

Vapex (Vapor extraction) is a non-thermal process providing a more environmental-friendly and energy-efficient alternative to steam injection.

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Vapex (Vapor extraction) is a non-thermal process providing a more environmental-friendly and energy-efficient alternative to steam injection. The simulation process using numerical modeling techniques may become difficult when considering the uncertainty due to reservoir heterogeneity. In this research, a physical-based semi-analytical proxy is developed to model solvent transport in Vapex process at isothermal conditions, detailed analytical formulations are derived and implemented in a calculation procedure to advance the solvent-bitumen interface and to estimate producing oil rate with time. The proposed approach is first validated against Hele-Shaw experimental data available in the literature, then modified to simulate homogeneous and heterogeneous reservoir cases, and further applied to rank a suit of geostatistical realizations and to assess reservoir uncertainty in subscale heterogeneity. Results from this model are compared against experimental data as well as detailed compositional simulation studies. Computational efficiency of the proxy in comparison to numerical simulations is also emphasized.

This Book was ranked 28 by Google Books for keyword Environmental Engineering Process Modeling.

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