Temporary blocking device suitable for interior of shaft after fracturing of oil and gas well and temporary blocking construction method

The invention relates to a temporary blocking device suitable for the interior of a shaft after fracturing of an oil and gas well and a temporary blocking construction method, and belongs to the fieldof oilfield equipment. A blowout prevention pipe of the device is in communication with a fracturing well opening, the fracturing well opening is in communication with a casing pipe, the casing pipeis provided with a temporary blocking packer, the temporary blocking packer is connected with a setting tool, the temporary blocking packer in the casing pipe is separated from the setting tool, and is connected with a back inserting abut-joint unblocking device to achieve communication, the back inserting abut-joint unblocking device is in communication with an oil pipe, and the oil pipe is inserted in the casing pipe. According to the temporary blocking device suitable for the interior of the shaft after fracturing of the oil and gas well, after fracture acidizing, high-pressure shaft work construction is carried out