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Title: Aerobic microbial enhanced oil recovery

In aerobic MEOR, the ability of oil-degrading bacteria to mobilize oil is used to increase oil recovery. In this process, oxygen and mineral nutrients are injected into the oil reservoir in order to stimulate growth of aerobic oil-degrading bacteria in the reservoir. Experiments carried out in a model sandstone with stock tank oil and bacteria isolated from offshore wells showed that residual oil saturation was lowered from 27% to 3%. The process was time dependent, not pore volume dependent. During MEOR flooding, the relative permeability of water was lowered. Oxygen and active bacteria were needed for the process to take place. Maximum efficiency was reached at low oxygen concentrations, approximately 1 mg O{sub 2}/liter.
Authors:
 [1] ; ;
  1. Univ. of Bergen (Norway)
Publication Date:
OSTI Identifier:
270500
Report Number(s):
CONF-9509173--
ON: DE96001220; TRN: 96:002616-0028
Resource Type:
Conference
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.
Research Org:
BDM Oklahoma, Inc., Bartlesville, OK (United States)
Country of Publication:
United States
Language:
English
Subject:
02 PETROLEUM; PETROLEUM; PRODUCTION; MICROBIAL EOR; AEROBIC CONDITIONS; PERFORMANCE; BACTERIA; MICROORGANISMS; SANDSTONES