Pigging and pipe scraping integrated tool

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,...

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

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