Device for jet packing and fracturing and tubular column comprising same

A device for perforating, packing, and fracturing, comprising:

• an upper connector, wherein a fracturing hole for communicating inside and outside is provided on an outer wall of the upper connector;
• a nozzle sleeve, which is provided at a lower end of the upper connector, wherein a nozzle for communicating inside and outside is provided at the nozzle sleeve;
• a mandrel, which is provided at a lower end of the nozzle sleeve;
• a packer, which is provided on an outer wall of the nozzle sleeve and an outer wall of the mandrel, wherein the packer comprises a rubber barrel assembly;
• a lower connector, which is provided at a lower end of the mandrel;
• a first inner sleeve, which is provided inside the upper connector and is slidingly connected to the upper connector, wherein, in an initial state, the first inner sleeve blocks the fracturing hole;
• and
• a second inner sleeve, which is provided inside the nozzle sleeve and is slidingly connected to the nozzle sleeve, wherein, in the initial state, the second inner sleeve blocks the nozzle,
• wherein after an internal flowbore of the second inner sleeve is blocked, the second inner sleeve is configured to be movable relative to the nozzle sleeve to expose the nozzle under an action of a first pressure, at the same time, the rubber barrel assembly is configured to deform under an action of a fracturing fluid so that the packer is packed, the first inner sleeve is configured to be movable relative to the upper connector to expose the fracturing hole under an action of a second pressure.