Modeling low saline carbonated water flooding including surface complexes

Journal Article (2024)
Author(s)

A. C. Alvarez (Universidade Federal do Rio de Janeiro)

Hans Bruining (TU Delft - Reservoir Engineering)

Dan Marchesin (Instituto Nacional de Matemática Pura e Aplicada - IMPA)

Research Group
Reservoir Engineering
Copyright
© 2024 A. C. Alvarez, J. Bruining, D. Marchesin
DOI related publication
https://doi.org/10.1007/s10596-024-10274-1
More Info
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Publication Year
2024
Language
English
Copyright
© 2024 A. C. Alvarez, J. Bruining, D. Marchesin
Research Group
Reservoir Engineering
Bibliographical Note
Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public. @en
Issue number
3
Volume number
28
Pages (from-to)
373-393
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Abstract

Carbonated water flooding (CWI) increases oil production due to favorable dissolution effects and viscosity reduction. Accurate modeling of CWI performance requires a simulator with the ability to capture the true physics of such process. In this study, compositional modeling coupled with surface complexation modeling (SCM) are done, allowing a unified study of the influence in oil recovery of reduction of salt concentration in water. The compositional model consists of the conservation equations of total carbon, hydrogen, oxygen, chloride and decane. The coefficients of such equations are obtained from the equilibrium partition of chemical species that are soluble both in oleic and the aqueous phases. SCM is done by using the PHREEQC program, which determines concentration of the master species. Estimation of the wettability as a function of the Total Bound Product (TBP) that takes into account the concentration of the complexes in the aqueous, oleic phases and in the rock walls is performed. We solve analytically and numerically these equations in 1 - D in order to elucidate the effects of the injection of low salinity carbonated water into a reservoir containing oil equilibrated with high salinity carbonated water.

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