Method of treating a hydrocarbon bearing formation

Details Method of treating a hydrocarbon bearing formation Method of treating a hydrocarbon bearing formation

2006-10-24

2006-10-24

Neuder, William (Department: 3672)

Wells

Processes

Using microorganisms

C435S281000

Reexamination Certificate

active

07124817

ABSTRACT:
A method of treating a hydrocarbon-bearing measure such as an oil-bearing rock formation (13). The method comprises: injecting water containing a source of vitamins, phosphates and an electron acceptor such as nitrate into the formation at first location (10) and allowing anaerobic bacteria, which are either already present in the formation (13) or which are introduced simultaneously to multiply using the oil as their main carbon source. This establishes a biomass layer (16) which acts to dissociate the oil from the rock formation (13). The dissociated oil is removed via an outlet (15). The vitamins are supplied by means of a controlled-release medium.

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Search Report—PCT/GB00/04222.
Preliminary Examination Report—PCT/GB00/04222.

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