Oil recovery enhancement in middle east heavy oil field using malonic acid based deep eutectic solvent

I. Al-Weheibi, R. Al-Hajri, Y. Al-Wahaibi, B. Jibril, A. Mohsenzadeh

Research output: Chapter in Book/Report/Conference proceedingConference contribution

7 Citations (Scopus)

Abstract

This study investigates the potential of chemical solvent called deep eutectic solvents (DES) to recover the residual heavy oil left after waterflooding. For the first time to our knowledge, the effectiveness of two DESs - choline chloride-malonic acid of molar ratios 1:1 and 1:0.5 - in enhancing heavy oil recovery was thoroughly investigated. As preliminary investigations, the two solvents were characterized by measuring density, viscosity, conductivity and pH at different temperatures (20-80°C). In order to investigate the EOR potential of the solvent, measurements of interfacial tension, wettability alteration, spontaneous water imbibition, emulsification, core flood and formation damage tests were conducted at different temperatures. The core flood test was carried out at reservoir condition (pressure = 1200psi, temperature = 45-80 °C) using Berea sandstone core samples and fluids from the field of interest (formation brine and crude oil). Results of the core flood test showed the solvents produced 7-14% of the residual heavy oil after brine flooding as tertiary recovery stage and both DESs displayed better performance in enhancing the oil recovery at higher temperatures. Measurements of absolute permeabilities before and after injection of DESs/brine solutions showed no damage to the formation. Wettability alteration was found to be the dominant mechanisms for the tertiary oil recovery enhancement.

Original languageEnglish
Title of host publicationSPE Middle East Oil and Gas Show and Conference, MEOS, Proceedings
PublisherSociety of Petroleum Engineers (SPE)
Pages780-792
Number of pages13
Volume2015-January
ISBN (Print)9781510803657
Publication statusPublished - 2015
Event19th Middle East Oil and Gas Show and Conference, MEOS 2015 - Manama, Bahrain
Duration: Mar 8 2015Mar 11 2015

Other

Other19th Middle East Oil and Gas Show and Conference, MEOS 2015
CountryBahrain
CityManama
Period3/8/153/11/15

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Fuel Technology

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  • Cite this

    Al-Weheibi, I., Al-Hajri, R., Al-Wahaibi, Y., Jibril, B., & Mohsenzadeh, A. (2015). Oil recovery enhancement in middle east heavy oil field using malonic acid based deep eutectic solvent. In SPE Middle East Oil and Gas Show and Conference, MEOS, Proceedings (Vol. 2015-January, pp. 780-792). Society of Petroleum Engineers (SPE).