Terrestrial heat and oil-gas co-production system in petroleum or natural gas production

The utility model provides a terrestrial heat and oil gas co-production system in petroleum or natural gas production. Wherein the wellbore is formed after well drilling and leads to the deep positionof a stratum, the sleeve is tripped into the wellbore, the gravity assisted heat pipe exchanger condensation section is in butt joint with the top end of the sleeve, the conveying pipe penetrates through the sleeve and the gravity assisted heat pipe exchanger, and the heat conduction cement sheath and the heat insulation cement sheath are arranged on the outer wall of the sleeve and in the wellbore from bottom to top respectively for well cementation. Arranging a packer in the casing above the oil layer or the gas layer, and perforating and fracturing the oil layer or the gas layer in the casing below the packer to serve as a production channel; the bottom end of the conveying pipe extends into the oil layer or the gas layer; the upper end of the conveying pipe extends out of the gravityheat pipe exchanger; perfo