Imperial College London
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ProfessorMartinBlunt

Faculty of Engineering, Department of Earth Science & Engineering

Chair in Flow in Porous Media
 
 
 
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Contact

 

+44 (0)20 7594 6500m.blunt Website

 
 
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Location

 

2.38ARoyal School of MinesSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Ladipo:2020:10.1016/j.petrol.2019.106586,
author = {Ladipo, L and Blunt, MJ and King, PR},
doi = {10.1016/j.petrol.2019.106586},
journal = {Journal of Petroleum Science and Engineering},
pages = {1--19},
title = {A salinity cut-off method to control numerical dispersion in low-salinity waterflooding simulation},
url = {http://dx.doi.org/10.1016/j.petrol.2019.106586},
volume = {184},
year = {2020}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Low-salinity or controlled salinity waterflooding (LSWF) is a promising enhanced oil recovery (EOR) technique. In simulations of this process, numerical dispersion smears saturation fronts, causing errors in the results. The objective of this work is to control these effects in LSWF simulation. We examine the impact of numerical dispersion on simulated LSWF performance. The low-salinity (LS) front is smeared even at unfeasibly fine grids. The velocities of the water fronts are altered. A numerical mixed zone forms around the interface between the injected and resident brines. This mimics a typical physical mixing effect.In reservoir simulation, threshold salinities are defined where the low salinity effect (LSE) is first encountered. It has been suggested that numerical dispersion effects can be corrected by imposing effective thresholds. We demonstrate that existing methods to evaluate these effective salinities do not accurately predict the salt front movement especially when dispersion is significant.We propose a simple simulation-based approach to evaluate the effective salinities based on the conservation of volumes of the resident and injected brines in the reference and upscaled solutions. After comparing analytical and corrected coarse-grid solutions in one-dimension, the effectiveness of the approach is demonstrated in multi-dimensional systems.A method is proposed to control the numerical mixed zone to replicate a physical longitudinal mixing effect. This method is demonstrated in one-dimension and does not require a fine-grid numerical solution as a benchmark. We investigate the effects of effective thresholds on the modeled transverse mixing or dispersion. A method to model transverse dispersion in simulations with an effective longitudinal component is suggested. This method is extended to the explicit modeling of physical dispersion in systems with transverse flows.We can now simply evaluate the effective salinities for a simulation grid; and control i
AU  - Ladipo,L
AU  - Blunt,MJ
AU  - King,PR
DO  - 10.1016/j.petrol.2019.106586
EP  - 19
PY  - 2020///
SN  - 0920-4105
SP  - 1
TI  - A salinity cut-off method to control numerical dispersion in low-salinity waterflooding simulation
T2  - Journal of Petroleum Science and Engineering
UR  - http://dx.doi.org/10.1016/j.petrol.2019.106586
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000501599800025&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - https://www.sciencedirect.com/science/article/pii/S0920410519310071?via%3Dihub
UR  - http://hdl.handle.net/10044/1/92232
VL  - 184
ER  -
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