Study the Effect of Alkaline and Surfactants on Improving Iraqi Crude Oil Recovery

Saleh Jawad, Saad; Khalaf, Hussain; Abed Hassan, Qussay; Abdulaameer, Haidar; Nayyef Shakir, Mayadah

	Study the Effect of Alkaline and Surfactants on Improving Iraqi Crude Oil Recovery
Journal of Petroleum Research & Studies
Article 1, Volume 377, Issue 10, 2014, Pages 73-91
Authors
Saad Saleh Jawad; Hussain Khalaf; Qussay Abed Hassan; Haidar Abdulaameer; Mayadah Nayyef Shakir
Abstract
This research aims to study the effect of using alkaline (caustic) and surfactant materials to imp rove the recovery of Iraqi crude oil under laboratory conditions. Flooding tests were carried out by using solutions of two alkalines (NaOH, Na2CO3) and two anionic surfactants materials were prepared at three concentrations ( 0.5%, 1%, 2 % ) using sand packs with ( 8.5 cm ) length and ( 6.5 cm ) diameter, which is saturated with tap water and then saturated with Basrah crude oil of 40 APIo density and 39.5 cp viscosity. The results were compared with the results of flooding tests by tap water and 2wt% brine water. In tests that tap water and 2wt% brine water were used as a primary recovery a secondary recovery had been tested by using materials that gave highest recovery, the results showed an increase in the recovery and the highest value was 50% by using 0.5% surfactant no.2. The research showed different effects of these solutions. In general, alkalines type showed an increase in recovery factor vs. concentration, but surfactant type showed decrease in the recovery factor vs. concentration. Also, the results showed that the recovery by using surfactant no.2 were the best respective to other materials, and the highest recovery obtained was 90.9 at 0.5%.
Keywords
Enhanced Oil Recovery; Alkaline flooding; Surfactant Flooding; Recovery Factor

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