The invention relates to a radial sidetrack drilling rotating self-propelled porous
jet flow drill bit, which mainly comprises a casing, a rotating
drill bit body, a gear type slide
ring type combined seal, an opening sealing screw, steel balls and the like, wherein a water inlet is processed at the
tail end of the casing; a backward
spray nozzle is processed on the casing; a forward
spray nozzle and a center
spray nozzle are processed on the rotating
drill bit body; semicircular grooves are respectively processed in the casing and the rotating
drill bit body; the steel balls are placed in the grooves formed between the casing and the rotating
drill bit body; the rotating
drill bit body is positioned through the steel balls and can rotate around the self axial line; the gear type slide
ring type combined seal is adopted between the rotating drill bit body and the casing; through holes are formed at the lateral side of the casing; the steel balls are placed into the grooves through the through holes; and after the steel balls are placed into the grooves, the through holes are sealed through the opening sealing screws. The radial sidetrack drilling rotating self-propelled porous
jet flow drill bit can effectively solve the problems of poor
jet flow drill bit reaming capability, poor
rock breaking hole smooth roundness, bent tracks of hydraulic jet hoses and the like of the hydraulic jet radial sidetrack drilling tiny
drill hole technology, and can be widely applied to the hydraulic jet radial horizontal well technology.