Enzyme Enhanced Oil Recovery EEOR: A Microfluidics Approach
- Maher Rahayyem (Saudi Aramco) | Peyman Mostaghimi (School of Minerals and Energy Resources Engineering, The University of New South Wales) | Yara A. Alzahid (School of Minerals and Energy Resources Engineering, The University of New South Wales) | Amalia Halim (School of Minerals and Energy Resources Engineering, The University of New South Wales) | Lucas Evangelista (Biotech Processing Supply, LLC) | Ryan T. Armstrong (School of Minerals and Energy Resources Engineering, The University of New South Wales)
- Document ID
- Society of Petroleum Engineers
- SPE Middle East Oil and Gas Show and Conference, 18-21 March, Manama, Bahrain
- Publication Date
- Document Type
- Conference Paper
- 2019. Society of Petroleum Engineers
- 5.4 Improved and Enhanced Recovery, 2 Well completion, 2.4 Hydraulic Fracturing, 5.4 Improved and Enhanced Recovery, 5 Reservoir Desciption & Dynamics, 2.5.2 Fracturing Materials (Fluids, Proppant), 5.4.1 Waterflooding
- EEOR, Oil Recovery, Enzyme, MICROFLUIDICS
- 5 in the last 30 days
- 269 since 2007
- Show more detail
- View rights & permissions
|SPE Member Price:||USD 5.00|
|SPE Non-Member Price:||USD 28.00|
Enzyme Enhanced Oil Recovery (EEOR) has recently been categorized as one of the most effective EOR mechanisms. Laboratory and field studies have reported up to 16% of incremental oil recovery rates. EEOR recovers oil mainly by two main mechanisms: lowering the interfacial tension between brine and oil and altering the wettability on rock grains to a more water-wet condition. Therefore, EEOR would promote mobilization of capillary-trapped oil after regular waterflooding. Since capillary-trapped oil resides at the micro-scale, it is essential to assess EEOR fluid-fluid interaction at that scale. To further investigate the ways in which these enzymes contribute to EOR, an experimental micro-scale approach was developed in which EEOR was analyzed using polydimethylsiloxane (PDMS) microfluidic devices. The PDMS microfluidics device was based on X-ray micro-CT images of a Bentheimer sandstone with resolution of 4.95 μm. We first compared the IFT reduction capabilities of one class of enzyme (Apollo GreenZyme ®) and a commercial surfactant (J13131) obtained from Shell Chemicals. For GreenZyme concentrations of 0.5, 1.5 and 2 wt%, the IFT values between GreenZyme solution and oil are 4.2, 0.7 and 0.6 mN/m, respectively. Whereas the IFT values for 0.5 wt% surfactant solutions and deionized water are 1.1 and 32 mN/m, respectively. We then compared the oil recovery of the two systems using the aforementioned sandstone PDMS microfluidics device. Recovery values up to 92% of oilwere obtained using GreenZyme. Surfactant and waterflooding on the same PDMS chips had recovery values of 86 and 80%, respectively. This study provides insights and direct visualization of the micro-scale oil recovery mechanisms of EEOR that can be used for design of effective EEOR flooding.
|File Size||1 MB||Number of Pages||9|
Alzahid, Yara A., Mostaghimi, Peyman, Gerami, Alireza. 2018. Functionalisation of Polydimethylsiloxane (PDMS)- Microfluidic Devices coated with Rock Minerals. Scientific Reports 8 (1): 15518. https://doi.org/10.1038/s41598-018-33495-8.
Sen, Ramkrishna. 2008. Biotechnology in petroleum recovery: The microbial EOR. Progress in Energy and Combustion Science 34 (6): 714–724. http://www.sciencedirect.com/science/article/pii/S0360128508000233.
Unsal, Evren, Broens, Marc, and Armstrong, Ryan T. 2016. Pore Scale Dynamics of Microemulsion Formation. Langmuir 32 (28): 7096–7108. http://dx.doi.org/10.1021/acs.langmuir.6b00821.