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GSA Annual Meeting in Indianapolis, Indiana, USA - 2018

Paper No. 79-10
Presentation Time: 10:30 AM

NUMERICAL MODELLING OF OILFIELD CHEMICAL INTERACTION WITH POROUS MEDIUM


WUYEP, Elizabeth Olive1, OLUYEMI, Gbenga1, YATES, Kyari2 and AKISANYA, Alfred3, (1)School of Engineering, Robert Gordon University, Sir Iain Wood Building, Aberdeen, AB10 7GJ, United Kingdom, (2)School Pharmacy and Life Science, Robert Gordon University, Sir Iain Wood Building, Aberdeen, AB10 7GJ, United Kingdom, (3)School of Engineering, University of Aberdeen, Aberdeen, AB24 3UE, United Kingdom

Several models are in existence for the prediction of sand failure/production in reservoir rocks; however, none of these models consider the deleterious effects of oilfield chemicals that are used routinely for one treatment or the other in oil and gas wells. In this work, the weakening effect of oilfield chemicals on sand failure and production arising from the interaction between the oilfield chemicals and the reservoir rocks is modelled numerically. Brinkman equation, transport of diluted species in porous media and Domain ordinary differential equations (ODEs) and DAEs physics interfaces in COMSOL Multiphysics software were used to solve for fluid flow, mass transport and chemical reaction in porous media. The results establish the fundamental mechanisms involved in the oilfield chemical-reservoir rock interaction and show that dissolution leads to increase in porosity; whilst precipitation causes reduction of porosity. It is shown that dissolution and precipitation of minerals are a function of the change in volume fraction of the minerals and porosity.

Key words: Dissolution, precipitation, porosity, volume fraction.

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    • Session No. 79

    T33. Geologic Energy Research I
    Monday, 5 November 2018: 8:00 AM-12:00 PM
    Room 145 (Indiana Convention Center)
    Geological Society of America Abstracts with Programs. Vol. 50, No. 6
    doi: 10.1130/abs/2018AM-321367
    © Copyright 2018 The Geological Society of America (GSA), all rights reserved. Permission is hereby granted to the author(s) of this abstract to reproduce and distribute it freely, for noncommercial purposes. Permission is hereby granted to any individual scientist to download a single copy of this electronic file and reproduce up to 20 paper copies for noncommercial purposes advancing science and education, including classroom use, providing all reproductions include the complete content shown here, including the author information. All other forms of reproduction and/or transmittal are prohibited without written permission from GSA Copyright Permissions.
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