A turbulent wax-scraping screw device for rod pump wells

A technology of scraping wax and screw, which is applied in the direction of isolation device, production fluid, wellbore/well parts, etc., which can solve the problems of high labor intensity and high cost, and achieve the effect of improving lifting capacity, increasing flow rate and saving costs

Active Publication Date: 2021-02-26
WENZHOU UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to provide a turbulent wax-scraping screw device for rod pump wells. This turbulent wax-scraping screw device for rod pump wells is used to solve the problems of high cost, labor-intensive problem

Method used

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  • A turbulent wax-scraping screw device for rod pump wells
  • A turbulent wax-scraping screw device for rod pump wells

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Embodiment Construction

[0023] Below in conjunction with accompanying drawing, the present invention will be further described:

[0024] This spoiler wax-scraping screw device for rod pump wells includes a plug 6, a spoiler wax-scraper screw 8, a heating cable 9, a hollow polished rod 14, and a power supply control cabinet 15. The spoiler wax-scraper screw 8 is arranged on the oil pipe 4 Inside, the lower end of the spoiler wax scraping screw 8 is threadedly connected with the plug 6, and the plug 6 is connected with the sucker rod 5, and the upper end of the spoiler wax scraper screw 8 is threaded with the centralizing collar 7, and the centralizing collar 7 is connected with the hollow polished rod 14; Wax-scraping screw 8 is formed by connecting sections of hollow screws through centralizing collars 7, which are connected in turn according to the required length. After reaching the wellhead, centralizing collars 7 are connected with hollow polished rods 14. The cable 9 is lowered from the hollow p...

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Abstract

The present invention relates to a wax-disturbing screw device for pump wells with rods, which includes a plug, a wax-scraping screw, a heating cable, a hollow polished rod, and a power supply control cabinet. Inside the pipe, the lower end of the spoiler wax scraping screw is threadedly connected with the plug, the plug is connected to the sucker rod, and the upper end of the spoiler wax scraper screw is connected to the hollow polished rod through the centralizing collar; The surface of each hollow screw adopts a spiral curved surface. The heating cable is lowered from the hollow polished rod to the inside of the spoiler wax-scraping screw and arranged along the length of the spoiler wax-scraper screw. The heating cable passes through the heating cable power supply line and the power supply control cabinet. connection; the turbulent wax scraping screw of the present invention changes the flow rate of the liquid flow in the oil pipe, and inhibits the precipitation of wax molecules. The wax deposited on the surface of the wax-scraping screw is removed by heating with the heating cable.

Description

Technical field: [0001] The invention relates to a wax-preventing device in the field of oil field production, in particular to a flow-disturbing wax-scraping screw device for rod pump wells. Background technique: [0002] In the process of oil field production, crude oil contains different amounts of paraffin, which is generally in a dissolved state in the underground oil layer. During the ascent of crude oil from the formation into the wellbore, due to the gradual decrease in temperature and pressure, wax gradually precipitates, accumulates, and accumulates on the pipe wall, which is called oil well waxing. Wax deposition makes the inner diameter of the tubing smaller, which affects the lifting capacity of the oil well. In severe cases, wax plugging occurs, resulting in abnormal production. [0003] Oilfields in my country have high wax content in crude oil. According to statistics, oil wells with a wax content ratio of 10-40% account for more than 60% of the total number...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B37/02E21B36/04E21B43/00
CPCE21B36/006E21B36/04E21B37/02E21B43/127
Inventor 冯子明赵岩郭晨浩孙瑞马擎洋崔巍宋微董康兴段维博
Owner WENZHOU UNIV
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