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Stator and rotor assembly for high-power high-speed high-efficiency turbodrills

A turbo drilling tool, high-power technology, applied in the field of oil drilling, to achieve the effect of increasing the speed of the drilling tool, improving efficiency, and avoiding longitudinal movement

Inactive Publication Date: 2013-04-03
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

[0006]The purpose of the present invention is to solve the problems of the existing low-speed turbodrills, such as limited types of drill bits, many stages, low efficiency, etc. The problems of limited speed, long size and low service efficiency provide a high-power, high-speed, high-efficiency turbodrill stator and rotor assembly

Method used

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  • Stator and rotor assembly for high-power high-speed high-efficiency turbodrills
  • Stator and rotor assembly for high-power high-speed high-efficiency turbodrills
  • Stator and rotor assembly for high-power high-speed high-efficiency turbodrills

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specific Embodiment approach 1

[0025] Specific embodiment 1: This embodiment is described in conjunction with each figure. The high-power, high-speed, high-efficiency turbodrill stator and rotor assembly of this embodiment includes a shaft 6, a housing 2, a stator 4 and a rotor 5, and stator blades are arranged on the stator 4 The rotor 5 is equipped with a rotor blade disk, the stator blade disk and the rotor blade disk form a stage, the degree of reaction of the stage is less than 0.5, the inner wall of the stage is set on the shaft 6, and there are ten stages on the shaft 6. The end faces between them are press fit, the lower end of the shaft 6 is provided with a drill bit 9, and the outer wall of the stage is covered with a shell 2. The stator blade disc comprises a cylindrical stator inner disk 4-1, a cylindrical stator outer disk 4-2 and a spline-shaped stator blade 4-3, and the stator blade 4-3 is uniform The rings are distributed on the stator blade disk centered on the axis, and are located between...

specific Embodiment approach 2

[0027] Specific embodiment two: This embodiment is described in conjunction with each figure. The stage pressure drop of this embodiment is 450-600kPa, the volume flow rate is 28-32L / s, and when the rotor speed is 2500-3300rpm, the stage efficiency is 60-75%. The power is 8-12kW. 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

[0028] Specific implementation mode 3: This implementation mode is illustrated in conjunction with various figures. In this implementation mode, the stage pressure drop is 535kPa, the volume flow rate is 30L / s, and when the rotor speed is 3000rpm, the stage efficiency can reach 70%, and the power is 11kW. 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.

[0029] The working principle of the high-power, high-speed and high-efficiency turbodrill is as follows: the drilling fluid from the high-pressure drilling pump on the ground passes through the drill pipe of the turbodrill, enters the stator 4 and r...

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Abstract

A stator and rotor assembly for high-power high-speed high-efficiency turbodrills belongs to the industry of petroleum drilling. The purpose of the invention is to solve the problems of the conventional low-speed turbodrill that: the variety of carried drill bits is limited, the number of stages is excessive, and the efficiency is low. A stator blade disk and a rotor blade disk are formed into a stage, the degree of reaction of the stage is less than 0.5, the ten stages are sleeved on a shaft sequentially from the top down to form a turbodrill power section, the end surfaces of the ten stages are tightly pressed together, a shell is sleeved on the ten stages, splines are adopted to construct the profiles of both the rotor blade and the stator blade, the spline of the rotor blade is shaped like a left-falling stroke, and the spline of the stator blade is shaped like a right-falling stroke.

Description

Technical field: [0001] The invention belongs to the oil drilling industry, and in particular relates to a stator and rotor assembly of a high-power, high-speed, high-efficiency turbine drilling tool. 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 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B4/02E21B10/46
Inventor 牛夕莹梁晨郁顺旺王林刘宇王慧杰马涛马晓红何建元
Owner 中国船舶重工集团公司第七〇三研究所
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