One-piece ball-throwing and segmenting wall scraper

An integrated, wall scraper technology, used in cleaning appliances, wellbore/well components, earth-moving drilling, etc., can solve the problems of simultaneous entry of tools, complicated processes, and always open, so as to reduce operation time and ensure cleaning. effect, the effect of prolonging the service life

Active Publication Date: 2018-01-09
NORTHEAST GASOLINEEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the existing conventional spring-type wall scraper cannot enter the well simultaneously with tools such as drilling, milling, grinding, and well drilling because the scraper body has already been opened when it enters the well; When the tool goes downhole, the scraper body of the scraper scrapes the casing, and a centralizer of the same casing specification needs to

Method used

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  • One-piece ball-throwing and segmenting wall scraper
  • One-piece ball-throwing and segmenting wall scraper
  • One-piece ball-throwing and segmenting wall scraper

Examples

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[0031] The present invention will be further explained below in conjunction with the drawings:

[0032] by Figure 2 to Figure 15 As shown, the integrated ball-throwing segmented wall scraper includes a body 1 in the shape of a cylindrical tube. During operation, the upper part of the body is connected to the drill pipe and goes down into the well. It is characterized in that: the integrated ball-throwing segmented wall scraper includes Outer hexagonal bolt 2, inner hexagonal bolt 3, slider lower spring 4, inner sleeve 5, pressure plug 6, scraper body 7, slider 8, pressure block 9, scraper lower spring 18 and pressure piece 16;

[0033] When designing this tool, first install a ratchet structure on the ratchet structure through hole 11 of the body 1. The ratchet structure is composed of an inner sleeve 5 and a pressure plug 6. The inner sleeve 5 is fixed on the body 1 with an external thread. The bottom 26 faces the central lumen. In the initial state, the rib structure 20 of the...

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Abstract

Disclosed is a one-piece ball-throwing and segmenting wall scraper with an aim to mainly solve problems that an existing wall scraper is limited in application and complicated in technology. The one-piece ball-throwing and segmenting wall scraper is characterized by being composed of a body, compression springs, a pressure bearing plug, an inner sleeve, sliders, pressure blocks and the like; grooves used for placing scraper bodies are formed in the body, and each scraper body is located at the bottom of each groove under the initial state and is fixed through each pressure block and a slider mechanism; the lower side of each scraper body is provided with the spring, and a ratchet structure formed by the inner sleeve and the pressure bearing plug can allow the scraper bodies to be opened orclosed by compressing and restoring the springs. By the arrangement, segmenting wall scraping can be realized, cleaning effect is improved, damage to sleeves can be effectively prevented, and servicelife of the sleeves is prolonged; operations such as grinding, wall scraping and pigging can be completed with one pipe column, operation time is effectively reduced, and operation cost is lowered.

Description

technical field [0001] The invention relates to oil drilling and production equipment used in the field of crude oil and natural gas exploitation. Background technique [0002] During the drilling process, due to the retention of drilling fluid, etc., the space inside the casing becomes smaller, which makes it difficult to run the subsequent drilling tools. In severe cases, there will be pipe sticking and damage to the casing. Thereby adopt wall scraper to solve the above-mentioned existing problems. The main purpose of the wall scraper is to remove cement, sand, paraffin and other wastes attached to the inner wall of the casing, to ensure the cleaning of the inner wall of the casing and to ensure the normal progress of drilling construction. However, the existing conventional spring-type wall scraper cannot enter the well simultaneously with tools such as drilling, milling, grinding, and well drilling because the scraper body has already been opened when it enters the well...

Claims

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Application Information

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IPC IPC(8): E21B37/04
Inventor 赵景原赵芙蕾朱秀玉凌鑫隋殿杰孙伟
Owner NORTHEAST GASOLINEEUM UNIV
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