Tool for jet packing and fracturing and tubular column comprising same

A tool for perforating, packing and fracturing, comprising:

• an upper connector, which is provided with communication holes for communicating inside and outside, a nozzle being provided at each communication hole;
• a connection sleeve, which is provided at a lower end of the upper connector;
• a mandrel, which is provided at a lower end of the connection sleeve;
• a packer, which is provided on an outer wall of the connection sleeve and an outer wall of the mandrel, the packer comprising a rubber barrel assembly and a first pressure transmission hole which is provided in the connection sleeve;
• a lower connector, which is provided at a lower end of the mandrel;
• and
• an inner sleeve, which is provided in an internal flowbore of the upper connector and is slidingly connected to the upper connector, in an initial state, the inner sleeve blocking the nozzles and the first pressure transmission hole,
• wherein after an internal flowbore of the inner sleeve is blocked, the inner sleeve is configured to be movable relative to the upper connector to expose the nozzle under an action of a first pressure,
• at the same time, the first pressure transmission hole is in communication with the internal flowbore of the inner sleeve so that the rubber barrel assembly deforms under an action of pressure and the packer is packed,
• before a fracturing fluid is pumped into the inner sleeve, the nozzle is configured to be detached from at least one of the communication holes.