Oil well paraffin removal tool and method

A technology for removing wax and oil wells, which is applied to cleaning appliances, wellbore/well components, earth-moving drilling, etc., to achieve the effect of simple and easy method, simple structure and few control parameters.

Active Publication Date: 2018-01-26
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above defects, the present invention provides an oil well wax removal tool and an oil well wax removal method. The oil well wax removal tool is simple in structure, easy to install, and is not prone to mechanical failures, can effectively improve the efficiency of wax removal work, and reduce falling objects during downhole operations. Injury incidents occur, and it is not easy to get sand stuck in the wax removal tool

Method used

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  • Oil well paraffin removal tool and method
  • Oil well paraffin removal tool and method
  • Oil well paraffin removal tool and method

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Embodiment Construction

[0030] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0031] figure 1 It is a schematic diagram of the head-up structure of the oil well wax removal tool of the present invention, figure 2 It is a schematic diagram of the top view structure of the first flange in the oil well wax removal tool of the present invention, image 3 It is a top view structure schematic diagram of the second flange in th...

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Abstract

The invention provides an oil well paraffin removal tool and method. The oil well paraffin removal tool comprises a first flange, a second flange and a paraffin removal piece; the paraffin removal piece comprises two paraffin removal knives, and the cross section of each paraffin removal knife is in a semicircle arc shape; the first flange is connected with the second flange, and the first flangeis located at the lower part of the second flange; a first circular through hole and a second circular through hole are correspondingly formed in the first flange and the second flange, and the firstcircular through hole corresponds to the second circular through hole; the diameters of the first circular through hole and the second circular through hole are smaller than the outer diameter of a surface layer casing and are greater than the outer diameter of an oil tube casing; and the two paraffin removal knives are arranged around the second circular through hole and are connected with the second flange. The oil well paraffin removal tool is simple in structure, convenient to install, low in production cost, high in paraffin removal efficiency and very high in practicability.

Description

technical field [0001] The invention relates to an oil well wax removal tool and an oil well wax removal method, which belong to the technical field of oil exploitation. Background technique [0002] In the process of lifting the pipe string on the oil well, especially for the production of heavy oil wells, due to the high viscosity of the crude oil and the high freezing point, severe wax formation will occur. Therefore, the operator usually stands under the wellhead and directly scrapes off the knots outside the oil pipe with both hands. Wax, when the temperature is low, the operator needs to use a shovel to shovel, grab, oil bubbles and other methods to clean up. Therefore, not only the oily hands of the operators are caused, but also the operators need to clean their hands before they can engage in other operations, resulting in a serious reduction in work efficiency. [0003] The oil scraper in the prior art is mainly composed of a fixed part and an oil scraping part. T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B37/02
Inventor 周理志孟祥娟宋文文袁泽波王师曹继红郭韬陈小凯徐海霞曾有信张雪松王赤宇毛仲强沈建新胡超刘迎斌谢俊
Owner PETROCHINA CO LTD
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