Oil-gas well airtight-production tubular column with single electric submersible pump

The invention discloses an oil-gas well airtight-production tubular column with a single electric submersible pump. The oil-gas well airtight-production tubular column comprises an underground casting pipe, an oil pipe, an underground safety valve and the electric submersible pump, wherein a packer is arranged at the position between the oil pipe and the underground casting pipe and located below the underground safety valve, and a flow channel switching short joint is arranged on the oil pipe and comprises a one-way valve and a bypass valve. The oil-gas well airtight-production tubular column also comprises a sealing hanger, a sealing tubular casing, a diversion pipe and a casing pipe packer, wherein the sealing tubular casing covers the flow channel switching short joint and the electric submersible pump, the casing pipe packer is arranged in the underground casting pipe and located below the sealing tubular casing, the upper end of the sealing tubular casing is hung on the oil pipe through the sealing hang