Actions for EOR by stimulated microflora [electronic resource].

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EOR by stimulated microflora [electronic resource].

Published
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 1995.
Physical Description
pages 143-151 : digital, PDF file
Additional Creators
United States. Department of Energy. Office of Scientific and Technical Information
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Summary
A combined microbiological and physico-chemical method for EOR has been developed for flooded West Siberia oil fields with formation temperature of 45°-95°C (318-365K). Formation water includes rich and various biocenoses numbering up to 2 x 10⁷ cells per ml. Representatives of genera, i.e, Pseudomonas, Bacillus, Actinomyces, Micrococcus, Mycobacterium, Sarcina, etc. were found to be the most widely distributed microorganisms. The method is based on injection of systems exhibiting high oil displacing capacity and at the same time being an additional nitrous nutrient for endemic populations of microorganisms. Their injection into formation water favors biomass growth by 4-6 orders and promotes syntheses of biosurfactants, biopolymers, acids, etc., and gaseous products. The features of residual oil displacement have been studied on laboratory models using a combined microbiological and physico-chemical method. A curve for the yield of residual oil is presented by two peaks. The first peak is stipulated by the washing action of oil displacement system, and the second one by the effect of metabolites produced at stimulation of biogenic processes. Oil displacement index increases by 15%-30%.
Report Numbers
E 1.99:conf-9509173--
conf-9509173--
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Note
Published through SciTech Connect.
12/31/1995.
"conf-9509173--"
"DE96001220"
International conference on microbial enhanced oil recovery and related biotechnology for solving environment problems, Dallas, TX (United States), 11-14 Sep 1995.
Bulavin, V.D.; Svarovskaya, L.I.; Altunina, L.K.; Rozhenkova, Z.A.
BDM Oklahoma, Inc., Bartlesville, OK (United States)
View MARC record | catkey: 14703975