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Turbine stator and rotor assembly

An assembly and rotor technology, applied in the field of petroleum drilling, can solve the problems of high viscosity of drilling fluid and low service life of turbine-stage efficiency turbodrilling tools, and achieve improved efficiency, obvious low-speed depressurization characteristics, and reduced stage pressure drop Effect

Inactive Publication Date: 2012-05-16
中国船舶重工集团公司第七〇三研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem of low turbine stage efficiency and low service life of the turbodrill due to the high viscosity of the existing drilling fluid, and then provide a turbine stator and rotor assembly

Method used

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specific Embodiment approach 1

[0009] Specific implementation mode one: combine Figure 1-Figure 8 To illustrate this embodiment, the turbine stator and rotor assembly of this embodiment includes a shaft 1 and a housing 2, and the turbine stator and rotor assembly also includes a plurality of stator blade disks 3 and a plurality of rotor blade disks 4, each rotor blade disk 4 is provided with a stator blade disk 3, each rotor blade disk 4 and a stator blade disk 3 form a stage 5, the reaction degree of the stage 5 is less than 0.5, and multiple stages 5 are sequentially set on the shaft 1 from top to bottom, The end faces of multiple stages 5 are pressed and fitted, and the housing 2 is set on the outside of multiple stages 5. The stator blade disk 3 includes a cylindrical stator inner disk 3-1, a cylindrical stator outer disk Disk 3-2 and a plurality of stator blades 3-3, the cylindrical stator outer disk 3-2 is set on the cylindrical stator inner disk 3-1, and the plurality of stator blades 3-3 are evenly...

specific Embodiment approach 2

[0012] Specific implementation mode two: combination Figure 1-Figure 8 Describe this embodiment. In this embodiment, the stage pressure drop is 80-90kPa, the volume flow rate is 28-32L / s, and when the rotor speed is 700-1300rpm, the stage efficiency is 60-70%, and the power is 1.2-1.6kW. With such setting, according to the low-speed decompression characteristics of the stage, when the speed deviates from the design speed, the pressure drop of the stage will decrease, and the working state of the turbodrill can be judged according to the ground pressure, which is convenient for the drill staff to monitor and operate remotely. Other compositions and connections are the same as in the first embodiment.

specific Embodiment approach 3

[0013] Specific implementation mode three: combination Figure 1-Figure 8 Describe this embodiment. In this embodiment, the stage pressure drop is 85kPa, the volume flow rate is 30L / s, and the rotor speed is 1000rpm, the stage efficiency can reach 66%, and the power is 1.5kW. With such setting, according to the low-speed decompression characteristics of the stage, when the speed deviates from the design speed, the pressure drop of the stage will decrease, and the working state of the turbodrill can be judged according to the ground pressure, which is convenient for the drill staff to monitor and operate remotely. Other compositions and connections are the same as those in Embodiment 1 or Embodiment 2.

[0014] The working principle of turbodrill is as follows:

[0015] The drilling fluid from the high-pressure drilling pump on the ground enters the stator and rotor of the turbodrill through the drill pipe of the turbodrill, depressurizes and accelerates in the stator, flows i...

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Abstract

The invention discloses a turbine stator and rotor assembly, which belongs to petroleum drilling industries and aims to solve the problems of low turbine-stage efficiency and short service life of a turbine drill due to higher viscosity of the conventional drilling fluid. Each rotor blade disc is provided with a stator blade disc, the rotor blade disc and the stator blade disc form a stage, and the reaction degree of the stage is less than 0.5; a plurality of stages are sleeve on a shaft sequentially from top to bottom and are in compression fit with one another through end surfaces; a shell is sleeved on the outer parts of the plurality of stages; molded lines of a rotor blade and a stator blade are constructed a spline curve; the spline curve of the rotor blade has a shape of an arc with a rightward opening; the spline curve of the stator blade has a shape of an arc with a leftward opening; and both the rotor blade and the stator blade are made of ZG20CrMnSiNi2. The turbine stator and rotor assembly is suitable for petroleum drilling.

Description

technical field [0001] The invention belongs to the oil drilling industry, in particular to a turbine stator and rotor assembly. Background technique [0002] The turbodrill uses high-velocity and high-pressure mud to impact the blades to gain energy, thereby driving the drill bit connected to it to rotate and break rock. The turbodrill is mainly composed of a turbine stator, a turbine rotor, a main shaft, a thrust bearing, a middle bearing, a lower bearing and a casing. The drill pipe does not rotate during drilling, the working conditions of the drill pipe can be significantly improved, and there is no power consumption required for rotating the drill pipe. Compared with other drilling tools, turbodrilling tools have the advantages of high drilling speed, high drilling efficiency, and short drilling time; they concentrate energy at the bottom of the well and drive the drill bit to rotate and break rock; Casing wear and accidents. Therefore, drilling with turbo drilling ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01D5/02F01D9/02E21B4/02
Inventor 梁晨牛夕莹林枫王林郁顺旺闫磊卫嘉吕成林
Owner 中国船舶重工集团公司第七〇三研究所
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