Cable-free paraffin removal robot

Abstract

The invention discloses a cable-free paraffin removal robot. The cable-free paraffin removal robot comprises a power system, a crawling shaft, a righting rod, a paraffin scraper and a roller, wherein the crawling shaft and the righting rod are directly or indirectly matched with the power system, the power system is used for driving the crawling shaft to rotate, the paraffin scraper is installed on the righting rod, and the roller is directly or indirectly installed on the side wall of the crawling shaft in a rotating mode. The cable-free paraffin removal robot has the following beneficial effects that the power system, the crawling shaft, the righting rod, the paraffin scraper and the roller are used in a combined mode, the robot capable of ascending and descending in an oil pipe is formed, the paraffin scraper can scrape paraffin on a pipe wall in the ascending and descending process of the robot, and the working efficiency is high.

Description

technical field [0001] The invention relates to the field of oil pipe cleaning, in particular to a cable-free wax removal robot. Background technique [0002] In oil transportation pipelines, due to the gradual decrease in temperature near the wellhead, wax deposition occurs on the inner wall of the oil pipe. If the wax is not removed in time, the flow area in the oil pipe will be reduced or blocked, and the efficiency of oil transportation will be reduced. At present, there are mainly the following wax removal methods: [0003] The first method is to lift the waxed oil pipe from the oil well and transport it to the oil pipe factory, and extend the wax scraper into the oil pipe to scrape the wax. This method requires the shutdown of the oil well to affect production, which is time-consuming, laborious, and costly; [0004] The second method is to add chemical reagents to the waxed oil wells, chemically react with the wax to decompose, and then discharge them with the well f...

AI Technical Summary

Problems solved by technology

[0003] The first method is to lift the waxed oil pipe from the oil well and transport it to the oil pipe factory, and extend the wax scraper into the oil pipe to scrape the wax. This method requires the shutdown of the oil well to affect production, which is time-consuming, laborious, and costly;

[0004] The second method is to add chemical reagents to the waxed oil wells, chemically react with the wax to decompose, and then discharge them with the well fluid. lead to environmental pollution;

[0005] The third method is to remove wax by pouring hot water and electric heating, which consumes a lot of energy and costs;

[0006] The fourth type is the mechanical wax removal method. A counterweight is tied to the wax scraper, and it is thrown into the oil well from the wellhead. The wax scraper is driven by gravity to remove the wax, and then pulled back to the wellhead by the steel wire rope tied to the tail, and so on. Wax removal, this method requires oil well shutdown and manual operation

[0007] So there is not yet a machine that does not use cables to quickly clean the wax in the tubing

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