Drifting and scraping integrated tool

Abstract

The invention provides a drifting and scraping integrated tool. The drifting and scraping integrated tool comprises a scraping section and a drifting connector, wherein a sealing assembly is arranged in the inner cavity of the drifting connector; the scraping section comprises a cutter barrel, a scraping cutter, a hydraulic cylinder and a supporting reed; the cutter barrel is connected with the drifting connector; the inner cavity of the cutter barrel is communicated with the inner cavity of the drifting connector, and a pressure-keeping chamber is formed by the sealing assembly; the scraping cutter is arranged on the outer side wall of the cutter barrel; one end of the scraping cutter is a fixed end connected with the outer side wall of the cutter barrel, and the other end of the scraping cutter is a free end; the hydraulic cylinder is arranged on the outer side wall of the cutter barrel and is communicated with the pressure-keeping chamber; the supporting reed is arranged on the outer side wall of the cutter barrel and is located between the scraper cutter and the hydraulic cylinder; one end of the supporting reed is connected with the hydraulic cylinder; the pressure of the pressure-keeping chamber is controlled, so that the hydraulic cylinder drives the supporting reed to be inserted between the scraper cutter and the cutter barrel by the free end; the supporting reed is used for expanding the scraper cutter to form a scraping outer diameter. The drifting and scraping integrated tool has drifting and scraping functions and can be used for strongly scraping an important scraping part.

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 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 blasthole burrs on the casing wall is an important process in the workover operation, 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, perforation burrs, and iron oxid...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an integrated tool for well drilling and scraping to solve the problems in the prior art that the well drilling and scraping operations cannot be carried out at the same time, and the scraping ability for key scraping positions is insufficient

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