Special threaded joint for shale gas well

The invention discloses a special threaded joint for a shale gas well. The special threaded joint comprises two parts including a coupling and a pipe body. The coupling successively includes an internal thread, a tool withdrawal groove, an oil storage groove, a coupling sealing structure and a coupling anti-torque shoulder in the axial direction. The pipe body successively includes an external thread, a pipe body sealing structure, a tube body anti-torque end face and a pipe end inner flat. The coupling sealing structure includes a coupling sealing arc surface and a coupling sealing cone surface. The pipe body sealing structure includes a pipe body sealing cone surface. The coupling sealing arc surface and the coupling sealing cone surface correspond to the pipe body sealing cone surface as a main sealing structure of the special threaded joint. The main sealing point is relatively far away from the coupling anti-torque shoulder, so that integrity of the sealing structure can be effectively prevented from bei