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Flow turbulence paraffin cutting screw rod device for rod pump well

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 cost and high labor intensity, and achieve the effect of not easy crystallization, improving lifting capacity and increasing flow rate

Active Publication Date: 2019-07-26
WENZHOU UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] 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 problems

Method used

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  • Flow turbulence paraffin cutting screw rod device for rod pump well
  • Flow turbulence paraffin cutting screw rod device for rod pump well

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Embodiment Construction

[0027] Below in conjunction with accompanying drawing, the present invention will be further described:

[0028] 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 invention relates to a flow turbulence paraffin cutting screw rod device for a rod pump well. The flow turbulence paraffin cutting screw rod device includes a plug, a flow turbulence paraffin cutting screw rod, a heating cable, a hollow polished rod and a power supply control cabinet, wherein the flow turbulence paraffin cutting screw rod is arranged in an oil pipe, the lower end of the flow turbulence paraffin cutting screw rod is connected with the plug in a threaded mode, the plug is connected with a sucker rod, and the upper end of the flow turbulence paraffin cutting screw rod is connected with the hollow polished rod by a centralizer coupling; and the flow turbulence paraffin cutting screw rod is connected to be formed by sections of hollow screw rods through the centralizer coupling the surface of each section of the hollow screw rod adopts a spiral curved surface, the heating cable is lowered into the flow turbulence paraffin cutting screw rod from the hollow polished rod,and arranged in the longitudinal direction of the flow turbulence paraffin cutting screw rod, and the heating cable and the power supply control box are connected through power supply lines of the heating cable. According to the flow turbulence paraffin cutting screw rod device, the liquid flow velocity in the oil pipe is changed, precipitation of paraffin molecules is restrained, and if precipitation paraffin on the inner wall of the oil pipe occurs, the precipitation paraffin is cut off in the movement progress of the spiral protrusions on the surface of the flow turbulence paraffin cuttingscrew rod; and if paraffin precipitation is conducted on the surface of the flow turbulence paraffin cutting screw rod, heating removal is conducted by the heating cable.

Description

[0001] Technical field: [0002] 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. [0003] Background technique: [0004] 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. [0005] 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 t...

Claims

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Application Information

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Patent Type & Authority Applications(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 UNIVERSITY
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