Two-Step Process for Microbial Enhanced Oil Recovery

Clostridium Bacillus subtilis, Bacillus licheniformis The subject invention relates to methods for post-primary oil recovery that utilize multiple mechanisms of action, wherein biochemical-producing microbes are injected into an oil well in a certain predetermined order, based on, for example, the m...

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Format Patent
LanguageEnglish
Published 17.07.2018
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Summary:Clostridium Bacillus subtilis, Bacillus licheniformis The subject invention relates to methods for post-primary oil recovery that utilize multiple mechanisms of action, wherein biochemical-producing microbes are injected into an oil well in a certain predetermined order, based on, for example, the metabolites and by-products they are capable of producing. Preferably, gas-, acid- and/or solvent-producing microbe such as a bacterium, is injected into the well first, followed by a biosurfactant and/or biopolymer-producing microbe, such as and/or a combination thereof.