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Oil scraping device for sucker rod

A technology of oil scraping device and oil scraper, which is used in cleaning appliances, wellbore/well components, earth-moving drilling and other directions, can solve the problem that the sucker rod short joint of the sucker rod is stuck in the oil scraping device when it is out of the original position. The oil scraping device cannot work normally, the airbag wall is worn and thinned, etc., to avoid the failure of normal work, easy installation and manufacturing, and reduce labor costs.

Active Publication Date: 2015-05-20
DAGANG OIL FIELD GRP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1. Due to the friction between the airbag and the sucker rod, the wall of the airbag is easily worn and thinned, resulting in easy damage to the airbag;
[0004] 2. The rolling deformation during the lifting of the sucker rod caused the oil scraping device to fail to work normally
[0005] 3. When the air bag is pulled up by the sucker rod, the rubber tube is deformed, and it is easy to cause the sucker rod or the short joint of the sucker rod to break away from the original position and get stuck in the oil scraping device

Method used

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  • Oil scraping device for sucker rod

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Embodiment Construction

[0023] Attached below figure 1 Specific embodiments of the invention will be described in detail.

[0024] The sucker rod oil scraping device of the present invention, such as figure 1 As shown, it includes a base 1 , an outer cylinder 2 , a cylindrical airbag 8 , an airbag inflation nozzle 9 , an operating table 10 and a positioning device, and the positioning device includes a connector 3 , an elastic non-metallic oil wiper 4 and a centralizer 6 . The console 10 is a stepped cylinder with a through hole, and is placed on the upper end surface of the outer cylinder 2 . The outer diameter of the cylinder at the bottom of the console 10 is smaller than the inner diameter of the outer cylinder 2 , and the outer diameter of the cylinder at the top of the console 10 is larger than the outer diameter of the outer cylinder 2 . The upper end surface of the base 1 and the lower end surface of the outer cylinder 2 are welded together concentrically. The outer cylinder is a tubular b...

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Abstract

The invention provides an oil scraping device for a sucker rod. The oil scraping device comprises a base, an outer barrel, a barrel-shaped airbag, an airbag inflation mouth, an operating table and a locating device. The locating device is of a hollow tubular structure, an elastic non-metal oil scraper is arranged in the middle of the locating device, and one end of the locating device axially penetrates through the inner circle of the barrel-shaped airbag and is detachably connected with the base. According to the technical scheme, the oil scraping device has the advantages that the structure is simple, mounting and manufacturing are easy, lifting force and friction force borne by the barrel-shaped airbag when the sucker rod is lifted are shared, and the technical problem that the barrel-shaped airbag cannot normally work due to the fact that the barrel-shaped airbag is stressed to roll upwards and deform is solved; meanwhile, the accident that damage is caused due to the fact that the barrel-shaped airbag is directly in friction with a short section of the sucker rod, and the sucker rod or the short section of the sucker rod is clamped due to deformation of the barrel-shaped airbag is avoided, the labor intensity of staff is reduced, labor cost is lowered, operating safety coefficients are improved, and environment pollution is avoided.

Description

technical field [0001] The invention belongs to the field of soil layer or rock drilling, and in particular relates to an oil scraping device for a sucker rod. Background technique [0002] In the process of oil production, when the sucker rod breaks off or the oil drain valve is used to remove the paraffin in the well, it is often necessary to lift the sucker rod and then perform subsequent processing. When lifting the sucker rod, a layer of crude oil will adhere to the surface of the sucker rod and be taken out of the wellbore. It is necessary to use an oil scraper to clean the sucker rod with crude oil. The original method of cleaning crude oil on the sucker rod is: fix one end of the belt rope under the wellhead, wind the belt rope around the sucker rod, and let an operator control the belt rope at the other end, and pull the oil out during the lifting of the rod. The crude oil on the surface of the rod is rubbed off, which increases the labor intensity and the total a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B37/02
CPCE21B37/02
Inventor 黄兴鸿黄艳萍齐玉梅侯超张桂梅
Owner DAGANG OIL FIELD GRP
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