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Integral rotatable scraper device

A rotary scraping, integrated technology, applied in drilling pipe, casing, wellbore/well components, etc., can solve the problem that the scraper cannot rotate downhole tools to enter the well at the same time, and achieve the effect of reasonable structure and ingenious concept.

Active Publication Date: 2021-07-02
XINJIANG SINOGASOLINEEUM ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention provides an integral rotatable scraper device, which overcomes the above-mentioned problem that the existing scraper cannot enter the well at the same time as the rotary downhole tool

Method used

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  • Integral rotatable scraper device
  • Integral rotatable scraper device
  • Integral rotatable scraper device

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Embodiment Construction

[0018] The present invention is not limited by the following examples, and specific implementation methods can be determined according to the technical solutions of the present invention and actual conditions.

[0019] In the present invention, for the convenience of description, the description of the relative positional relationship of each component is based on the description attached to the description. figure 1 For example, the positional relationship of front, back, up, down, left, right, etc. is based on the attached figure 1 determined by the layout direction.

[0020] Below in conjunction with embodiment and accompanying drawing, the present invention will be further described:

[0021] as attached figure 1 , 2 , 3, and 4, the integral rotatable scraper device includes a mandrel 1, an upper milling cylinder 2, a first bearing outer cylinder 3, an upper centralizing cylinder 4, a second bearing outer cylinder 5, a scraper cylinder, a third The bearing outer cylind...

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Abstract

The invention relates to the technical field of downhole tools, and is an integral rotatable scraper device, including a mandrel, an upper milling cylinder, a first bearing outer cylinder, an upper centralizing cylinder, a second bearing outer cylinder, a scraper cylinder, and a third bearing The outer cylinder, the lower centralizing cylinder, the fourth bearing outer cylinder and the lower milling cylinder. The upper outer side of the mandrel is fixed with an upper limit assembly. The upper limit assembly includes a limit ring, a limit cylinder and a countersunk screw. The upper outer part of the mandrel is set Limit cylinder. The present invention has a reasonable and compact structure and ingenious conception. The upper milling cylinder is limitedly installed on the outer side of the upper part of the mandrel through the upper limit device and the upper limit ring, and the upper milling cylinder is rotated with the mandrel by setting the first square key; By setting the first bearing outer cylinder, the second bearing outer cylinder, the third bearing outer cylinder and the fourth bearing outer cylinder, the upper centralizing cylinder, the scraper cylinder and the lower centralizing cylinder are prevented from rotating with the mandrel, which is efficient, stable, time-saving and labor-saving specialty.

Description

technical field [0001] The invention relates to the technical field of downhole tools, and is an integral rotatable scraper device. Background technique [0002] After the oil and gas well drilling or workover is completed, it needs to be transferred to the well completion process, and various completion tools such as packers, sliding sleeves, and ball seats are lowered to control the flow direction and speed of the downhole fluid. In order to improve the success rate of tool running operations, such as the success rate of packer setting, etc., it is necessary to clean up the packer setting position. The scraper can clean the cement block, cement sheath, Hard wax, various salt crystals and deposits, perforation burrs, and iron oxide produced after casing corrosion are removed. In order to realize the effective operation of wall scraping, the conventional technical method is to drill and grind the downhole cement plug with grinding and milling tools, and then run the drillin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B37/02E21B29/00E21B17/10
CPCE21B17/1078E21B29/002E21B37/02
Inventor 王群琪朱进府张成路尧余诗捷刘汗卿熊明映李鹏山周振荣
Owner XINJIANG SINOGASOLINEEUM ENG
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