METHOD FOR THE CONTROL OF A ROLLED LIQUID FLOW IN A RESERVOIR FOR HYDROCARBONS WITH THE HELP OF MICROORGANISMS

摘要

The present invention relates to a method for forming a microbial plug in a hydrocarbon-containing geological formation that has been flooded with water, the method comprising: a) introducing into the formation a microbial inoculum whose microorganisms are: (i) in spore form or in another resting state; (ii) capable of sporulation; (iii) are cellulolytic or hemicellulolytic; (iv) are thermophiles, extreme thermophiles or hyperthermophiles; (v) unable to use hydrocarbons as a carbon source; and (vi) are not present in a hydrocarbon-containing geological formation; b) simultaneous or sequential insertion into the formation of a nutrient medium that provides a carbon source that can be used by microorganisms introduced in step (a) but not present in the formation by microorganisms; c) the effect on the inoculum of conditions that facilitate the transition of microorganisms into the phase of active growth within the water channels in the geological formation; and d) introducing the injection fluid containing the additional nutrient medium indicated in step (b) into the formation through the injection well; as well as to methods of maintaining such traffic jams, methods of controlled change in the position and / or extent of the formed traffic jam and to the traffic jams themselves.