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Evaluation of Permeability Impairment Due to Surfactant Flooding

Abraham, V. D. and Orodu, O. D. and Efeovbokhan, Vincent Enon and Okoro, Emeka Emmanuel and Ojo, Temiloluwa and Bolujo, E. O. (2021) Evaluation of Permeability Impairment Due to Surfactant Flooding. In: 4th International Conference on Science and Sustainable Development, 2021, Online.

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In the course of chemical flooding of crude oil reservoirs with surfactants, retention of surfactant particles in the pores of the reservoir rock can cause a major reduction of the reservoir permeability. This can cause serious problems thus unfavourably influencing the economics of oil recovery. An appropriate assessment of the reduction in permeability is essential for the recovery of hydrocarbons. During tertiary recovery of crude oil, a critical evaluation of formation damage is necessary to evade operating costs, as the reservoir rock is extremely sensitive to chemicals injected. The extent to which permeability is reduced cannot be comprehensive for core field scales; it is consequently paramount to study the reduction in the permeability of a core at laboratory scale before field scale estimation. In this paper, an experimental investigation on the reduction in permeability after surfactant injection cores is presented. Surfactants were used to flood the core samples. The permeability of the cores was calculated at the beginning and end of every flood by measuring the differential pressure during surfactant flooding of the cores. From the results, it is evident that there is a strong influence of surfactants on the process of adsorption on reservoir rocks and consequently leading to reduction in permeability.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Enhanced Oil Recovery; Permeability reduction; Surfactants; Formation damage; Core Samples
Subjects: T Technology > T Technology (General)
T Technology > TP Chemical technology
Divisions: Faculty of Engineering, Science and Mathematics > School of Engineering Sciences
Depositing User: nwokealisi
Date Deposited: 31 Oct 2022 12:15
Last Modified: 31 Oct 2022 12:15

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