New method for increased oil recovery
30.04.2013IRIS researchers analyze and develop methods for plugging water channels in the oil reservoir with bacteria, so that one can increase production from mature fields, or so-called tail fields.
When the natural pressure is no longer enough to drive out the oil from a reservoir, one injects a mixture of water and gas in order to maintain the production.
On the Norwegian shelf this method is very widespread.
The problem with this technology is that it eventually will lead to formation of water channels in the oil layer. New injections will then go straight through without recovering more oil, even though it still can be plenty left in the reservoir.
IRIS and GOE-IP are now developing a promising method for increasing production from the so-called tail field or mature fields.
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