Preparation method and equipment of screw drill inside spin pre-outline stator

A technology of contour stator and screw drilling tool, which is applied to electric processing equipment, metal processing equipment, electrochemical processing equipment, etc., can solve the problems of poor temperature resistance, low motor output torque, unstable work, etc., and achieve long service life. , The output torque is high and the work is stable.

Inactive Publication Date: 2010-10-06
INNER MONGOLIA NORTH HEAVY INDS GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The inner wall of the stator of the screw drilling tool is composed of a plum-like helical surface. Due to the long length of the stator, the processing of the helical surface is very difficult. It is difficult to form it with the currently known machining methods.
Therefore, at present, the plum petal-like spiral curved surf

Method used

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  • Preparation method and equipment of screw drill inside spin pre-outline stator
  • Preparation method and equipment of screw drill inside spin pre-outline stator
  • Preparation method and equipment of screw drill inside spin pre-outline stator

Examples

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Effect test

Example Embodiment

[0024] Example 1

[0025] See figure 1 The invention adopts a pulling method to prepare the inner spiral pre-contour stator of a screw drilling tool. The invention consists of an electrolytic machine tool. The electrolytic machine tool includes: a conductive copper bar 6, a numerical control cabinet 8, a power source 9, an electrolyte pump 10, a filter screen 11, an electrolysis The liquid pool 12, the bed 13, the electrolytic machine tool tailstock is provided with a rear seal 1, and the electrolytic machine bed 13 between the rear seal 1 and the head box 7 is provided with a fixture 2, and the prefabricated pipe 3 is clamped in On the fixture 2, one end of the cathode rod 5 is provided with a cathode 4, and the other end is connected with the bedside box 7. The cathode 4 is divided into a working part and a guiding part. The guiding part is a cylinder with the same diameter, and the working part is cone-shaped, and the cone-shaped outer surface is composed of spiral plum petals...

Example Embodiment

[0032] Example 2

[0033] See figure 2 The invention adopts a push method to prepare the inner spiral pre-contour stator of a screw drill. The invention consists of an electrolytic machine tool. The electrolytic machine tool includes: a conductive copper row 6, a numerical control cabinet 8, a power source 9, an electrolyte pump 10, a filter screen 11, and electrolysis The liquid pool 12, the bed 13, the electrolytic machine tool tailstock is provided with a rear seal 1, and the electrolytic machine bed 13 between the rear seal 1 and the head box 7 is provided with a fixture 2, and the prefabricated pipe 3 is clamped in On the fixture 2, one end of the prefabricated tube 3 before electrical machining is located at the rear seal 1, and the other end is provided with a seal 14, the cathode rod 5 is provided with a cathode 4 at one end, and the other end is connected with the bedside box 7. The cathode 4 is divided into a working part and a guide Part, the guiding part is a cylinde...

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Abstract

The invention relates to a preparation method and equipment of a screw drill inside spin pre-outline stator, belonging to the technical field of the screw drill inside spin pre-outline stator for petroleum drilling. In the invention, rear seal is arranged on the tail bed of an electrolytic machine tool, a fixture is arranged on the electrolytic machine tool body between the rear seal and a spindle box, a prefabricated tube is clamped on the fixture before electrolytic machining, one end of a cathode rod is provided with a cathode, and the other end thereof is connected with the spindle box. The drill motor of the screw in the invention has high output torque, good thermal endurance, stable operation and long service life. The technology in the invention can promote the revolutionary development of the screw drill manufacture in our country and has an important significance on future oil exploitation in our country.

Description

technical field [0001] The invention relates to a preparation method and equipment for an internal helical pre-profile stator of a screw drilling tool, and belongs to the technical field of an internal helical pre-profile stator of a screw drilling tool for oil drilling. technical background [0002] The screw drilling tool is currently the most widely used downhole dynamic drilling tool powered by drilling fluid. The inner wall of the stator of the screw drilling tool is composed of a quincunx-like helical surface. Due to the long length of the stator, the processing of the helical surface is very difficult. It is difficult to form it with the currently known mechanical processing methods. Therefore, at present, the plum petal-like spiral curved surface of the inner wall of the stator of the screw drilling tool is made of rubber injection on the inner wall of the steel pipe circle. The motor composed of this kind of stator has low output torque, poor temperature resistance,...

Claims

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Application Information

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IPC IPC(8): B23H7/00B23H3/00B23H7/26B23H11/00
Inventor 靳坚温钢柱石喜福王国文庞志辉郭金辉张森
Owner INNER MONGOLIA NORTH HEAVY INDS GROUP
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