skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Microbial Enhanced Oil Recovery in Fractional-Wet Systems: A Pore-Scale Investigation

Journal Article · · Transport Porous Med.

Microbial enhanced oil recovery (MEOR) is a technology that could potentially increase the tertiary recovery of oil from mature oil formations. However, the efficacy of this technology in fractional-wet systems is unknown, and the mechanisms involved in oil mobilization therefore need further investigation. Our MEOR strategy consists of the injection of ex situ produced metabolic byproducts produced by Bacillus mojavensis JF-2 (which lower interfacial tension (IFT) via biosurfactant production) into fractional-wet cores containing residual oil. Two different MEOR flooding solutions were tested; one solution contained both microbes and metabolic byproducts while the other contained only the metabolic byproducts. The columns were imaged with X-ray computed microtomography (CMT) after water flooding, and after MEOR, which allowed for the evaluation of the pore-scale processes taking place during MEOR. Results indicate that the larger residual oil blobs and residual oil held under relatively low capillary pressures were the main fractions recovered during MEOR. Residual oil saturation, interfacial curvatures, and oil blob sizes were measured from the CMT images and used to develop a conceptual model for MEOR in fractional-wet systems. Overall, results indicate that MEOR was effective at recovering oil from fractional-wet systems with reported additional oil recovered (AOR) values between 44 and 80%; the highest AOR values were observed in the most oil-wet system.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
Sponsoring Organization:
NSFDOE - BASIC ENERGY SCIENCESSTATE OF ILLINOIS
OSTI ID:
1046855
Journal Information:
Transport Porous Med., Vol. 92, Issue (3) ; 04, 2012
Country of Publication:
United States
Language:
ENGLISH

References (34)

Continuous production of the lipopeptide biosurfactant of Bacillus licheniformis JF-2 journal May 1994
Techniques for image enhancement and segmentation of tomographic images of porous materials journal August 2004
Evaluation of bioemulsifier mediated Microbial Enhanced Oil Recovery using sand pack column journal October 2008
Potential Microbial Enhanced Oil Recovery Processes: A Critical Analysis conference April 2013
Oil ganglion dynamics during immiscible displacement: Model formulation journal May 1980
Microbial surfactant-enhanced mineral oil recovery under laboratory conditions journal May 2008
A pore-scale investigation of a multiphase porous media system journal March 2005
The in situ microbial enhanced oil recovery in fractured porous media journal August 2007
Pore-scale modeling: Effects of wettability on waterflood oil recovery journal April 2010
Production and deactivation of biosurfactant by Bacillus licheniformis JF-2 journal March 1993
An experimental study of the relationship between wettability and oil production characteristics journal December 1999
Impact of Wettability on Pore-Scale Characteristics of Residual Nonaqueous Phase Liquids journal July 2009
Extraction of physically realistic pore network properties from three-dimensional synchrotron X-ray microtomography images of unconsolidated porous media systems journal January 2005
Oil Recovery by Surface Film Drainage In Mixed-Wettability Rocks journal October 1973
Chapter 6 Microbial Processes in Oil Fields book February 2009
Recovery of oil by spontaneous imbibition journal August 2001
Using X-ray computed tomography in hydrology: systems, resolutions, and limitations journal October 2002
Interfacial area measurements for unsaturated flow through a porous medium: INTERFACIAL AREA MEASUREMENTS journal December 2004
Virus Retention and Transport in Chemically Heterogeneous Porous Media under Saturated and Unsaturated Flow Conditions journal March 2006
Mechanisms of Capillary-Controlled Immiscible Fluid Flow in Fractionally Wet Porous Media journal January 2010
Oil blob populations and mobilization of trapped oil in unconsolidated packs journal August 1985
Characterizing Pore-Scale Configuration of Organic Immiscible Liquid in Multiphase Systems With Synchrotron X-Ray Microtomography journal January 2006
Image analysis algorithms for estimating porous media multiphase flow variables from computed microtomography data: a validation study journal February 2009
Experimental investigation of trapped oil clusters in a water-wet bead pack using X-ray microtomography: EXPERIMENTAL INVESTIGATION OF TRAPPED OIL CLUSTERS journal April 2010
Lattice-Boltzmann simulations of the capillary pressure–saturation–interfacial area relationship for porous media journal November 2009
Wettability Literature Survey- Part 1: Rock/Oil/Brine Interactions and the Effects of Core Handling on Wettability journal October 1986
Solid-Surface Characterization by Wetting journal August 2009
Measurement and prediction of the relationship between capillary pressure, saturation, and interfacial area in a NAPL-water-glass bead system: CAPILLARY PRESSURE, SATURATION, AND IFA journal August 2010
The potential of Bacillus licheniformis strains for in situ enhanced oil recovery journal July 1997
Network modelling of mixed-wettability on electrical resistivity, capillary pressure and wettability indices journal April 2002
Observations Relating to the Wettability of Porous Rock journal December 1959
Anaerobic Production of a Biosurfactant by Bacillus licheniformis JF-2 journal January 1985
Structural and immunological characterization of a biosurfactant produced by Bacillus licheniformis JF-2. journal January 1994
Continuous production of the lipopeptide biosurfactant of Bacillus licheniformis JF-2 journal May 1994

Cited By (4)

Dynamic investigation of nutrient consumption and injection strategy in microbial enhanced oil recovery (MEOR) by means of large-scale experiments journal April 2015
Modeling and Simulation of Microbial Enhanced Oil Recovery Including Interfacial Area journal October 2017
Isolation and screening of Bacillus subtilis MJ01 for MEOR application: biosurfactant characterization, production optimization and wetting effect on carbonate surfaces journal April 2018
Real-time 3D imaging of Haines jumps in porous media flow journal February 2013