Pigging and pipe scraping integrated tool

A technology for drilling wells and tools, which is applied in the field of integrated tools for drilling and scraping pipes, which can solve the problems of wear, labor and time-consuming pipe strings, etc., and achieve the effects of reducing maintenance costs, saving energy, and reducing wear

Active Publication Date: 2015-07-08
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the problem of time-consuming and time-consuming lifting and lowering of the pipe string in the prior art and the wear and tear of the pipe string, the present invention provides an integrated tool for well drilling and scraping, which can perform scraping operations while drilling the well. Reduce the number of tripping strings, improve the operation efficiency of well scraping, and reduce the wear of running strings

Method used

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  • Pigging and pipe scraping integrated tool
  • Pigging and pipe scraping integrated tool
  • Pigging and pipe scraping integrated tool

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Embodiment Construction

[0022] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described with reference to the accompanying drawings.

[0023] Such as Figure 1 to Figure 3 As shown, the present invention proposes an integrated tool for drilling and scraping pipes, which includes a scraping mechanism and a drilling mechanism that are fixedly connected sequentially from top to bottom. A knife groove is provided, and the scraping mechanism also includes a scraping knife inserted into the knife groove, and a reed for resetting the scraping knife is arranged in the knife groove; the scraping mechanism also includes a The sleeve 4 of the scraper is sleeved outside the main body 1 of the knife holder, and the sleeve 4 can move up or down until the scraper stretches out under the elastic force of the reed.

[0024] In the process of the integrated tool for drilling and...

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Abstract

The invention provides a pigging and pipe scraping integrated tool. The pigging and pipe scraping integrated tool comprises a scraping mechanism and a pigging mechanism which are sequentially and fixedly connected from top to bottom, wherein the scraping mechanism comprises a knife rest body, a knife groove is formed in the outer wall of the knife rest body, the scraping mechanism further comprises a scraping knife inserted and connected into the knife groove, and a reed enabling the scraping knife to reset is arranged in the knife groove. The scraping mechanism further comprises a sleeve capable of constraining the scraping knife, wherein the knife rest body is sleeved by the sleeve, and the sleeve can upwards or downwards move till the scraping knife extends out under the elastic force effect of the reed. The pigging and pipe scraping integrated tool performs scraping operation while performing pigging operation, tubular column pulling times can be decreased, the pigging scraping operation efficiency can be improved, and downhole tubular column abrasion can be reduced.

Description

technical field [0001] The invention relates to a downhole tool in the field of oil production, in particular to an integrated well drilling and scraping tool which has the functions of drilling the well and scraping the inner wall of the casing. Background technique [0002] Drilling and scraping are basic procedures in downhole operations. Drilling is a conventional method to detect the inner diameter of casing, tubing, drill pipe and other pipes. Checking the maximum geometric size that can pass through after deformation is an essential process for workover and operation inspection. Scraping the inner wall of the casing to remove cement, hard wax, salt scale and blast hole burrs on the casing wall is an important process in workover operations and normal downhole operations, and plays an important role in the running and normal operation of downhole tools. The casing scraper can be used to remove cement blocks, cement sheath, hard wax, various salt crystals and deposits,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B29/00E21B37/02
CPCE21B31/00E21B37/04
Inventor 施玉李君赵旭亮马振阎岩屈振哲黄小钊赵小满吴晓明范加兴黄欢刘斌孙宝功于金海李江南王强
Owner PETROCHINA CO LTD
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