Novel sucker rod centralizing paraffin scraper

Abstract

The invention provides a novel sucker rod centralizing paraffin scraper and relates to the field of oil extraction equipment. The novel sucker rod centralizing paraffin scraper comprises a centralizing paraffin scraper body, wherein a plurality of tower-shaped helical teeth are arranged on the centralizing paraffin scraper body; the top end of the tower-shaped helical teeth is provided with a helical baffle which is vertical to the tower-shaped helical teeth; a longitudinal opening is arranged on the centralizing paraffin scraper body; the size of the longitudinal opening is 1 / 3 of the diameter of a sucker rod. The novel sucker rod centralizing paraffin scraper is capable of enlarging the flux area of an oil pipe and reducing the kinetic resistance of the centralizing paraffin scraper, excellent in both centralizing effect and paraffin scraping property, simple in structure, convenient to mount, low in manufacturing cost and long in service life.

Description

Technical field: [0001] The invention relates to an accessory on oil production equipment, in particular to a novel sucker rod righting wax scraper. Background technique: [0002] When exploiting crude oil with rod pump oil production equipment, the two problems that need to be solved are mainly to prevent the bending of the sucker rod and to remove the wax on the oil pipe and the sucker rod. The bending of the sucker rod will cause the gap between the sucker rod and the oil pipe. Pressure contact and reciprocating friction at the contact point lead to accidents of sucker rod fracture and tubing wear-through, which are especially serious in directional wells and cluster wells. Wax deposits on the oil pipe or sucker rod will reduce the flow section in the oil pipe and increase the oil flow resistance. [0003] Existing righting wax scrapers are mainly divided into two types: fixed and movable. The fixed righting wax scrapers are fixed on the sucker rod and move up and down w...

AI Technical Summary

Problems solved by technology

[0002] When exploiting crude oil with rod pump oil production equipment, the two problems that need to be solved are mainly to prevent the bending of the sucker rod and to remove the wax on the oil pipe and the sucker rod. The bending of the sucker rod will cause the gap between the sucker rod and the oil pipe. Pressure contact, and reciprocating friction at the contact point, resulting in accidents of sucker rod fracture and tubing wear-through, which are especially serious in directional wells and cluster wells

Wax deposition on the oil pipe or sucker rod will reduce the flow section in the oil pipe and increase the oil flow resistance

[0003] Existing righting wax scrapers are mainly divided into two types: fixed and movable. The fixed righting wax scrapers are fixed on the sucker rod and move up and down with the sucker rod. Measures to reduce the resistance when it moves, but its disadvantage is that it can only remove the wax on the oil pipe, but not the wax on the sucker rod; the movable righting wax scraper, but the number of helical teeth of this kind of righting wax scraper Many, both ends are chamfered or rounded, so the flow area is small and the movement resistance is large

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