COMBINED MILLING AND PRODUCTION DEVICE AND METHOD FOR MILLING AND PRODUCING FLUID FROM A WELL BORE Russian patent published in 2023 - IPC E21B29/00 E21B43/00 

FIELD: oil and gas industry.

SUBSTANCE: device contains an operational housing, including a central channel and one or more passages extending from the outer surface to the central channel, one or more pivot-hinged flap valves located in the central channel of the operational housing, an actuator located in the central channel of the operational housing. The actuator is configured to permanently open one or more flap valves and one or more passages of the service housing when actuated. The device includes a connector selectively fixed below the operating housing and configured to be detached from the operating housing when activated, an electric motor fixed below the connector, and a milling bit fixed below the electric motor. The electric motor is configured to rotate the milling bit relative to the connector.

EFFECT: possibility of milling and production with one descent into the wellbore, reduction of time and operating costs.

23 cl, 22 dwg