The invention discloses an anti-slide single-rubber-
barrel downhole throttling device which is designed for achieving the purposes of improving sealing performance of a throttling device, prolonging the service life of the throttling device, stabilizing the throttling device and preventing the throttling device from sliding. The anti-slide single-rubber-
barrel downhole throttling device mainly comprises a locking sleeve connecting a putting device and a body, a
fishing head arranged on the body in a sleeved mode, a slips, a slips supporting sleeve, a down seal
plunger barrel arranged under the locking sleeve, a slips supporting sleeve arranged on a middle supporting sleeve in a sleeved mode, a rubber barrel supporting sleeve, a rubber barrel, a cylinder sleeve, an air cock arranged at the bottom end of the down seal
plunger barrel, an air cock base arranged at the bottom end of the base seal
plunger barrel, a sand preventing hood connecting the cylinder sleeve and an outer supporting sleeve, anti-slide claws connected with a connection sleeve, and the like. When the anti-slide single-rubber-barrel downhole throttling device is mounted, the device is easy to seal in a down seal mode, after mounting, the rubber barrel and an oil
pipe are good in sealing performance, service life is stable, in
fishing, a
fishing pin is sheared, the body and the slips supporting sleeve move upwards and are separated from the rubber barrel, and the rubber barrel can effectively contract, so that fishing is easy. The anti-slide claws can well prevent the device from sliding, and the device is prevented from sliding down into a well bottom. The anti-slide single-rubber-barrel downhole throttling device is good in sealing performance and stable in service life.