Nozzles including secondary passages, drill assemblies including same and associated methods
AssigneeBaker Hughes Incorporated
InventorDavid Gavia
Life of this patent
Estimating the term…
Abstract
Nozzles for a drilling tools, such as rotary-type drag bits and roller cone bits, a drilling tool and drilling assembly comprising nozzles, and methods of conveying drilling fluid through a nozzle for use in drilling subterranean formations are provided. A nozzle may include a substantially cylindrical nozzle body having an axis and an inlet port with a primary passage extending therethrough, and at least one secondary passage that diverges from the primary passage at an exit port.
Claims26
A drilling assembly for drilling subterranean formations, the drilling assembly comprising:
- a drill body having at least one nozzle port and an inner plenum in fluid communication with the at least one nozzle port;
- and
- a nozzle coupled to the at least one nozzle port of the drill body in fluid communication with the inner plenum, the nozzle comprising:
- a substantially cylindrical nozzle body having an axis and an inlet port;
- a primary passage extending through the substantially cylindrical nozzle body from the inlet port and substantially aligned with the axis;
- and
- at least one secondary passage extending at least partially through the substantially cylindrical nozzle body and diverging from the primary passage.
A nozzle for a drilling tool for drilling subterranean formations, the nozzle comprising:
- a substantially cylindrical nozzle body having an axis and an inlet port;
- a primary passage extending through the substantially cylindrical nozzle body from the inlet port and substantially aligned with the axis;
- and
- at least one secondary passage extending at least partially through the substantially cylindrical nozzle body and diverging from the primary passage.
A method of conveying drilling fluid through a nozzle for use on a rotary drilling assembly for forming a subterranean borehole, the method comprising:
- introducing a drilling fluid into an inlet end of a nozzle having a primary passage and at least one secondary passage;
- directing a majority of the drilling fluid received by the inlet end of the nozzle through the primary passage to an exit end surface of the nozzle;
- and
- directing another portion of the drilling fluid through the at least one secondary passage to the exit end surface of the nozzle.
Dependencies are inferred from the claim text.