Experimental Investigation of Potential of Combined Controlled Salinity and Bio-Surfactant CSBS in Enhanced Oil Recovery EOR Processes

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

3 Citations (Scopus)

Abstract

In this study, we investigate potential application of environment-friendly bio-surfactants (EFBS) in EOR processes. We assess the prospect of combining the EFBS with controlled salinity (CS) water injection in optimising oil recovery using rhamnolipid and protein-enzyme as case study. Rock component analysis, bio-surfactant solubility in brine of varied concentration and composition, crude oil-brine interfacial tension (IFT) and bio-surfactants emulsification activity test were carried out as part of the preliminary investigations. Following these preliminary analyses, a series of comprehensive core flooding displacement experiments were used to investigate the EOR potential of CSBS injection process. Finally, effluent analyses were conducted to study the effect of this combined process on dynamic oil-brine-rock interactions. Results of the IFT tests using 0.0083-3M brine concentrations show IFT reduction from 3.40-2.5 mN/m with increasing salinity for protein-enzyme while increase in IFT from 0.11-0.34mN/m was observed with increasing salinity for rhamnolipid. However, using a fixed brine concentration of 8.3mM with varied biosurfactant concentration, IFT reduction with increase in concentration was observed for both of them. Also, the two bio-surfactants exhibited stable emulsion active in varied brine salinity investigated. Protein-enzyme is soluble in varied brine formulation while rhamnolipid solubility was found to be dependent on the brine composition and system pH rather than the ionic strength. Furthermore, from the secondary injection of CS and CSBS, the highest recovery factor of 82.76% was achieved with CSBS (protein-enzyme). However, in the tertiary applications, the highest recovery of 83.40% was achieved in the CS injection. Finally, increased pH, Ca2+ and Mg2+ concentrations was observed with both CS and CSBS flooding. This suggests reaction between excess cations and previously adsorbed carboxylic group of crude-oil led to increased recovery. Whereas, at residual oil saturation, interaction between bio-surfactant molecules and rock surface resulted in increased water-wetness and release of oil.

Original languageEnglish
Title of host publicationSociety of Petroleum Engineers - SPE Nigeria Annual International Conference and Exhibition 2018, NAIC 2018
PublisherSociety of Petroleum Engineers
Number of pages22
ISBN (Print)9781613996140
DOIs
Publication statusPublished - 1 Jan 2018
EventSPE Nigeria Annual International Conference and Exhibition 2018, NAIC 2018 - Lagos, Nigeria
Duration: 6 Aug 20188 Aug 2018

Conference

ConferenceSPE Nigeria Annual International Conference and Exhibition 2018, NAIC 2018
CountryNigeria
CityLagos
Period6/08/188/08/18

Fingerprint

enhanced oil recovery
Surface-Active Agents
brine
surfactant
Oils
Surface active agents
Surface tension
salinity
Recovery
Enzymes
Proteins
Rocks
enzyme
protein
oil
Petroleum
Solubility
Crude oil
crude oil
solubility

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology
  • Geochemistry and Petrology
  • Fuel Technology

Cite this

Udoh, T., Akanji, L., & Vinogradov, J. (2018). Experimental Investigation of Potential of Combined Controlled Salinity and Bio-Surfactant CSBS in Enhanced Oil Recovery EOR Processes. In Society of Petroleum Engineers - SPE Nigeria Annual International Conference and Exhibition 2018, NAIC 2018 Society of Petroleum Engineers. https://doi.org/10.2118/193388-MS

Experimental Investigation of Potential of Combined Controlled Salinity and Bio-Surfactant CSBS in Enhanced Oil Recovery EOR Processes. / Udoh, Tinuola; Akanji, Lateef; Vinogradov, Jan.

Society of Petroleum Engineers - SPE Nigeria Annual International Conference and Exhibition 2018, NAIC 2018. Society of Petroleum Engineers, 2018.

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

Udoh, T, Akanji, L & Vinogradov, J 2018, Experimental Investigation of Potential of Combined Controlled Salinity and Bio-Surfactant CSBS in Enhanced Oil Recovery EOR Processes. in Society of Petroleum Engineers - SPE Nigeria Annual International Conference and Exhibition 2018, NAIC 2018. Society of Petroleum Engineers, SPE Nigeria Annual International Conference and Exhibition 2018, NAIC 2018, Lagos, Nigeria, 6/08/18. https://doi.org/10.2118/193388-MS
Udoh T, Akanji L, Vinogradov J. Experimental Investigation of Potential of Combined Controlled Salinity and Bio-Surfactant CSBS in Enhanced Oil Recovery EOR Processes. In Society of Petroleum Engineers - SPE Nigeria Annual International Conference and Exhibition 2018, NAIC 2018. Society of Petroleum Engineers. 2018 https://doi.org/10.2118/193388-MS
Udoh, Tinuola ; Akanji, Lateef ; Vinogradov, Jan. / Experimental Investigation of Potential of Combined Controlled Salinity and Bio-Surfactant CSBS in Enhanced Oil Recovery EOR Processes. Society of Petroleum Engineers - SPE Nigeria Annual International Conference and Exhibition 2018, NAIC 2018. Society of Petroleum Engineers, 2018.
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