Flange hanging type oil pipe hanging device

A novel flange-hanging type tubing hanger belongs to downhole tools of oil well. As shown in the attached figure, the structure comprises a screw hole (3), a steel ring groove of the wellhead, an oil tubing screw, a novel flange-hanging type tubing hanger body (2), a sealing screw (6), a vent hole (5), a valve ball (7), a ball seat (8) and a clamp sleeve (10). By applying the single-flow valve assembly comprising the valve ball (7), the ball seat (8) and the clamp sleeve (10) with the sealing screw (6), the sealing screw (6) leaves the vent hole (5), the gas from the sleeve automatically enters into the oil-gas surface gathering pipeline, so as to reduces the effect of the gas from the sleeve on dynamic oil level and pump efficiency, and recycle the gas from the sleeve to avoid waste of natural gas resource.