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Drifting and scraping integrated tool

A technology for drilling wells and tools, applied in the field of integrated drilling and scraping tools, can solve the problems of insufficient scraping capacity at key scraping positions, and the inability to conduct drilling and scraping operations at the same time, so as to improve operation efficiency, facilitate operation, and reduce maintenance costs. Effect

Active Publication Date: 2015-05-27
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • Drifting and scraping integrated tool
  • Drifting and scraping integrated tool
  • Drifting and scraping integrated tool

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Embodiment Construction

[0039] 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.

[0040] Such as Figure 1 to Figure 3 As shown, the present invention provides an integrated well scraping tool, including a connected scraping section 1 and a well joint 2, the well joint 2 is tubular, used for well operation, and has the function of a well gauge. A packing assembly is provided in the inner cavity of the joint 2 for isolating the inner cavity of the well joint 2 .

[0041] Such as figure 1 , figure 2As shown, the scraping section 1 includes a knife barrel 11, a hydraulic cylinder 131 (or a hydraulic cylinder), a support reed 15 and a scraper 16, wherein the knife barrel 11 is tubular, and the knife barrel 11 is connected with the well joint 2, and the knife barrel The inner cavity of 11 is connected with the ...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B37/02
CPCE21B37/04E21B47/08
Inventor 施玉李君赵旭亮张德海吕春柳马振张建喜恒坤刘斌孙宝功李江南赵小满任德强黄智蒋雪张健黄兴国张远健黄欢
Owner PETROCHINA CO LTD
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