Wikipedia Revisited

Skepticism abounds regarding the reliability of the information available on Wikipedia. Still, we have found it to be a useful resource. Take, for example, the case of MEOR - Microbial Enhanced Oil Recovery.

If you are an expert in the field, the table listing the major ventures working MEOR can be useful.

If you are new to the field, the survey of areas of application, problems to be addressed, advantages and disadvantages, etc., can be helpful.

Here are some excerpts from the Wikipedia article on MEOR …

Ventures working in MEOR (Private sector)
Rawwater Engineering Company Ltd
Oppenheimer Biotechnology, Inc.
Titan Oil Recovery, Inc.
Yara International ASA
Circle T Sales and Service Inc.
GloriOil Ltd.
StatoilHydro ASA
Environmental BioTechnologies, Inc.
ONGC-IRS
Rogaland Research
COREC
CIPR

"Several decades of research and successful applications support the claims of MEOR as a mature technology. Despite those facts, disagreement still exists. Successful stories are specific for each MEOR field application, and published information regarding supportive economical advantages is however inexistent. Despite this, there is consensus considering MEOR one of the cheapest existing EOR methods.

“MEOR advantages
“• Injected microbes and nutrients are cheap; easy to handle in the field and independent of oil prices. • Economically attractive for mature oil fields before abandonment. • Increases oil production. • Existing facilities require slight modifications. • Easy application. • Less expensive set up. • Low energy input requirement for microbes to produce MEOR agents. • More efficient than other EOR methods when applied to carbonate oil reservoirs. • Microbial activity increases with microbial growth. This is opposite to the case of other EOR additives in time and distance. • Cellular products are biodegradable and therefore can be considered environmentally friendly.

“MEOR disadvantages
“• The oxygen deployed in aerobic MEOR can act as corrosive agent on non-resistant topside equipment and down-hole piping
“• Anaerobic MEOR requires large amounts of sugar limiting its applicability in offshore platforms due to logistical problems
“• Exogenous microbes require facilities for their cultivation.
“• Indigenous microbes need a standardized framework for evaluating microbial activity, e.g. specialized coring and sampling techniques.
"• Microbial growth is favoured when: layer permeability is greater than 50 md; reservoir temperature is inferior to 80 0C, salinity is below 150 g/L and reservoir depth is less than 2400m.”

View the complete article at:
http://en.wikipedia.org/wiki/Microbial_enhanced_oil_recovery

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