Oil well paraffin removal tool and method

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...

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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

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