Turbodrill
OwnerJury Petrovich Plodukhininventor
Life of this patent
Estimating the term…
Abstract
A turbodrill comprises a housing coupled with its one end to a drill pipe for feeding drilling fluid, the housing accommodating a hydraulic downhole motor comprising a multistage turbine. Each stage of the multistage turbine comprises a directing stator disk defining through passages and a working rotor disk defining through passages, the rotor disk being installed on a shaft. The shaft is rotatably mounted in the housing on supports and carries a rock breaking tool on the end thereof facing the bottomhole. The total area of the inlet openings of the stator disk through passages is from about ⅕ to about ⅗ of the total area of the inlet openings of the rotor disk through passages.
Claims4
A turbodrill in combination with a drill pipe comprising:
- a housing which is a bearing member and has two ends, one of said ends being coupled to said drill pipe;
- a hydraulic downhole motor arranged in said housing;
- a multistage turbine of said hydraulic downhole motor;
- a directing stator disk of said multistage turbine, secured in said housing;
- supports installed in said housing;
- a shaft rotatably mounted in said housing on said supports, having an axis and a carrying end facing the bottomhole;
- a working rotor disk of said multistage turbine disposed on said shaft;
- each stage of said multistage turbine constitututed by said directing stator disk and working rotor disk, installed sequentially downstream the drilling fluid;
- through passages formed in said directing stator disk;
- through passages formed in said working rotor disk;
- inlet openings of said through passages in said working rotor disk;
- inlet openings of said through passages in said directing stator disk, the total area of said inlet openings of said through passages in said directing stator disk being from about ⅕ to about ⅗ of the total area of said inlet openings of said through passages in said working rotor disk;
- a rock breaking tool secured on said carrying end of said shaft.
Dependencies are inferred from the claim text.