Patent ID: 7007865

Claim:
A self-adjusting nozzle insertable into a conduit or well bore for use in discharging a pressurized fluid into the conduit or well bore, the nozzle comprising: a tool tip having an elongated, substantially cylindrical sidewall with an open end and a substantially closed end, a first axial bore with a first diameter, an internally threaded upper section in the first axial bore, at least one discharge port extending through the substantially closed end, a plurality of axially and circumferentially spaced discharge ports extending through the sidewall below the threaded upper section, and a packing nut threadedly engageable with the threaded upper section of the tool tip, the packing nut having a second axial bore with a second diameter that is less than the first diameter; and a mandrel having a third axial bore with a third diameter that is smaller than the second diameter, a connector section attachable to a tubular member through which the pressurized fluid is provided to the nozzle, a flange section disposed distally of the connector section and having an outer diameter larger than the second axial bore, and an elongate slide section disposed distally of the flange section and having an externally threaded lower end, the slide section being insertable through the packing nut and slidably engageable with the second axial bore and insertable into the first axial bore when the packing nut is threaded into engagement with the threaded upper section of the tool tip; and a retainer ring slidably engageable with the first axial bore, the retainer ring being threadedly engageable with the externally threaded lower end of the elongate slide section of the mandrel after insertion of the elongate slide section through the packing nut before the packing nut is threaded into engagement with the threaded upper section of the tool tip.