Sleeve scraper and cleaning method adopting same

A pipe scraper and casing technology, which is applied to cleaning appliances, earth-moving drilling, wellbore/well components, etc., can solve problems such as affecting the setting of packers, and achieve the effect of improving work efficiency and reducing the risk of failure.

Pending Publication Date: 2020-12-04
PETROSTAR OIL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the complex downhole environment, there may be foreign objects in the casing or changes in the inner diameter of the casing, which will affect the packer setting

Method used

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  • Sleeve scraper and cleaning method adopting same
  • Sleeve scraper and cleaning method adopting same
  • Sleeve scraper and cleaning method adopting same

Examples

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[0027] In order to make the objects, technical solutions, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings. Since the location of the product placed in the present invention can change at will, "" "," "" "," "left", "right" or equal correspondence as described in the present invention represents only relative positional relationships, not to limit absolute The location relationship. In the following description, in order to describe convenience, reference figure 1 The sleeve scraper of the present invention uses a vertical placement (the paper is seen from top down), and the upper joint is located above, and the lower joint is located below.

[0028] The present invention discloses a sleeve scraper, which is a monolithic mandrel-axis-viable type cage sleeve scraper, including:

[0029] The integral mandrel, which is a whole, interior and up and down;

[0030] Cage scraper, the cage scr

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PUM

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Abstract

The invention discloses a sleeve scraper and a cleaning method adopting the same. The sleeve scraper comprises an integral mandrel and a cage type scraper, wherein the integral mandrel is an integralbody, is hollow inside and communicates up and down; the cage type scraper is integrally processed by an elastic steel plate, and a plurality of spiral blade strips in the length direction of the mandrel are formed on the side surface of the cage type scraper; and the cage type scraper sleeves the integral mandrel and is fixed. According to the sleeve scraper disclosed by the invention, the elastic integral multi-blade cage type scraper is adopted, complex structures such as a conventional scraper spring and a gasket are not needed, the middle spiral elastic steel plate can be guaranteed to adapt to scraping needs of sleeves with different inner diameters, and the inner wall of the sleeve can be scraped in a 360-degree dead-angle-free full-coverage mode; the integral mandrel structure canreduce the risk that middle connection of the scraper is invalid; and the integral spiral cage type scraper adopts an elastic multi-blade structure, so that the effect of scraping for many times through single relative motion of the scraper and the sleeve can be realized, and therefore, working efficiency is greatly improved.

Description

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Claims

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Application Information

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Owner PETROSTAR OIL TECH
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