METHOD OF OPERATING DOUBLE-HEAD WELL Russian patent published in 2009 - IPC E21B43/20 

FIELD: oil and gas industry.

SUBSTANCE: invention refers to development of hydrocarbon deposits with double-head horizontal wells and can be used at extraction of high viscous oil and bitumen. The method consists in exposing payout bed with a horizontal borehole and in casing the borehole with production string preliminary equipped with a filter in the interval of the exposed payout bed, then in equipping the heads, in installation of a blind packer through the first head in the interval of the payout bed of the well and in operating the well through the second head. According to the invention the blind packer is installed behind the circuit of water flooding from the side of the second head and the part of the filter apertures through which water flooding occurs is closed. The blind packer is reinstalled and additional part of apertures through which water flooding occurs is closed when the circuit of water flooding has changed in the process of operation and watering of extracted production has increased. This regulates the level of water flooding.

EFFECT: increased efficiency of method due to simplification of packer assembly in well, to possibility of packer re-assembly and due to possibility of continuous well operation through the second well.

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