Biopolymer system for permeability modification in porous media
- BMD-Oklahoma, Inc., Bartlesville, OK (United States); and others
New technologies are needed to reduce the current high rate of well abandonment. Improved sweep efficiency, reservoir conformance, and permeability modification can have a significant impact on oil recovery processes. Microorganisms can be used to selectively plug high-permeability zones to improve sweep efficiency and impart conformance control. Studies of a promising microbial system for polymer production were conducted to evaluate reservoir conditions in which this system would be effective. Factors which can affect microbial growth and polymer production include salinity, pH, temperature, divalent ions, presence of residual oil, and rock matrix. Flask tests and coreflooding experiments were conducted to optimize and evaluate the effectiveness of this system. Nuclear magnetic resonance imaging (NMRI) was used to visualize microbial polymer production in porous media. Changes in fluid distribution within the pore system of the core were detected.
- Research Organization:
- BDM Oklahoma, Inc., Bartlesville, OK (United States)
- DOE Contract Number:
- AC22-94PC91008
- OSTI ID:
- 270497
- Report Number(s):
- CONF-9509173-; ON: DE96001220; TRN: 96:002616-0025
- Resource Relation:
- Conference: International conference on microbial enhanced oil recovery and related biotechnology for solving environment problems, Dallas, TX (United States), 11-14 Sep 1995; Other Information: PBD: [1995]; Related Information: Is Part Of The fifth international conference on microbial enhanced oil recovery and related biotechnology for solving environmental problems: 1995 Conference proceedings; Bryant, R. [ed.]; PB: 619 p.
- Country of Publication:
- United States
- Language:
- English
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