TURBINE-DRIVEN ROTATOR Russian patent published in 1999 - IPC

FIELD: drilling machinery and equipment. SUBSTANCE: this relates to facilities intended for drilling large-diameter bore-holes by means of bottom-hole motors. Stationary fastened on axle of turbine-driven rotator by means of nut are stator members of axial pad, adapter, turbine pressure stator stages, and also bushes of radial supports. Stationary secured in rotator body by means of flanged joint are rotary members of axial pad, spacer bush, turbine pressure rotary stages, and radial supports. Drill bit is fastened to lower adapter. Made in external surfaces of turbine pressure stages, radial supports, spacer bush, and axial pad members are oil pockets which by means of hole in body are hydraulically connected with oil space of lubricator which by welding is fastened on external surface of body. Aforesaid embodiment of turbine-driven rotator allows for reducing labour inputs and easily extracting assembled set of turbines from body when rotator after operation in sea water is for long period of time waiting for its disassembly. EFFECT: higher efficiency. 2 cl, 3 dwg