Direct tubular thermal recovery casing head

The utility model discloses a direct tubular thermal recovery casing head, it contains the body flange, the lower extreme of body flange inner chamber is connected with surface casing, be provided with the sealed tube in the body flange inner chamber, be provided with the metal seal dish in the body flange inner chamber, metal seal dish through seal structure with the outer wall sealing contact of sealed tube, be provided with the stop tube on the up end of metal seal dish, the lower extreme of stop tube and upper end respectively with sealed tube and well head end cap are connected, the lower extreme of sealed tube passes through pipe connector hoop and oil reservoir bushing, runs through between metal seal dish and the surface casing the body flange is provided with the current drainage pipe. The utility model discloses when annotating high pressure and high temperature steam in to the well, can reduce bloated range of production string, when the mud vapor stream released, effectively the intervascular annular space of seal cover made the mud steam flow discharge from the discharge mouth of pipe, and the security is good.