Underground turbine-driven casing shoe system
The invention relates to the technical field of petroleum and natural gas, in particular to an underground turbine driving casing shoe system with a structure that the outer diameter of a turbine rotor is not larger than the inner diameter of a turbine stator. The invention provides an underground t...
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| Hauptverfasser: | , , , |
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Zusammenfassung: | The invention relates to the technical field of petroleum and natural gas, in particular to an underground turbine driving casing shoe system with a structure that the outer diameter of a turbine rotor is not larger than the inner diameter of a turbine stator. The invention provides an underground turbine-driven casing shoe system. The underground turbine-driven casing shoe system comprises an upper joint, a turbine power part and a casing shoe, the turbine power part comprises a turbine stator shell, a turbine stator is arranged in the turbine stator shell, a turbine rotor is connected into the turbine stator in a matched mode, and the outer diameter of the turbine rotor is not larger than the inner diameter of the turbine stator. When the turbine stator is connected with the upper joint, the turbine rotor is connected with the sleeve shoe; when the turbine stator is connected with the sleeve shoe, the turbine rotor is connected with the upper connector. When high-pressure drilling fluid passes through the t |
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