Thermal composite huff-puff synergistic system for offshore low-yield heavy oil cold production well

The utility model discloses a thermal composite huff and puff synergistic system for an offshore low-yield thickened oil cold production well, which comprises a wellhead Christmas tree, an electric pump production pipe column, a hot water injection pipeline, a mud tank, a medicament tank and a nitrogen making device, one end of the hot water injection pipeline is connected to an oil pipe wing valve of the wellhead Christmas tree, and the other end of the hot water injection pipeline is connected with platform hot water; a composite synergistic agent A is stored in the mud tank, and the mud tank is connected to the hot water injection pipeline through an agent injection pipeline A; a composite synergistic agent B is stored in the agent tank, and the agent tank is connected to the hot water injection pipeline through an agent injection pipeline B; the nitrogen making device is connected to a casing wing valve of a wellhead Christmas tree through a nitrogen injection pipeline. According to the utility model, the