%0 Conference Paper
%A Abraham, V. D.
%A Orodu, O. D.
%A Efeovbokhan, Vincent Enon
%A Okoro, Emeka Emmanuel
%A Ojo, Temiloluwa
%A Bolujo, E. O.
%B 4th International Conference on Science and Sustainable Development
%C Online
%D 2021
%F eprints:16398
%K Enhanced Oil Recovery; Permeability reduction; Surfactants; Formation damage;  Core Samples
%T Evaluation of Permeability Impairment Due to Surfactant  Flooding
%U http://eprints.covenantuniversity.edu.ng/16398/
%X 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.