Eccentric adjustable oil pipe online wax scraping device

Abstract

The invention discloses an eccentric adjustable oil pipe online wax scraping device. The problems that an existing oil pipe wax scraper cannot scrape wax completely, secondary pollution is prone to being caused, and oil wax is not prone to being discharged are mainly solved. The device is characterized in that a lower guide disc (3) is arranged on a lower flange (2), an upper guide disc (15) is arranged on an upper portion of the lower guide disc (3), six roller carriers (5) are evenly distributed between the upper guide disc and the lower guide disc in a circumferential direction, an outer side of each roller carrier (5) is connected with a return spring (4), and an inner side of each roller carrier is connected with rollers (21); a roller carrier convex shaft (14) is arranged at the topof the roller carrier (5); the upper part of the roller carrier convex shaft (14) extends out of the upper guide disc (15) and is connected with a wax scraper (7); a rubber core mounting disc (8) is arranged at the upper part of the wax scraper (7); and a rubber core (11) is arranged in the center of the rubber core mounting disc (8). According to the device, mechanical wax scraping and steam cleaning are combined, the oil pipe can reach the well descending standard at a time, and secondary pollution cannot be generated.

Description

technical field [0001] The invention relates to the field of oil fields, in particular to an eccentrically adjustable oil pipe online wax scraping device. Background technique [0002] At present, the crude oil in most oilfields has a high wax content. During the oil well inspection operation, in order to avoid the pollution of the formation by the well flushing fluid, the backwashing operation is usually not performed before the original well tubing is pulled out, which makes the outer wall of the original well tubing adhered to when it is pulled out. A large amount of oil and wax will produce a large amount of dirty oil and sewage when the oil pipes on the ground are cleaned with steam from a boiler truck, and there are environmental hazards such as leakage, leakage, etc. In order to solve this problem, a common method is to install a rubber tube wax scraper at the wellhead. The principle is to use the rubber tube to hold the outer wall of the tubing tightly, and scrape of...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the deficiencies of the existing oil pipe wax scraper, which is not clean, easy to cause secondary pollution, and difficult to discharge oil wax, the present invention provides an eccentrically adjustable oil pipe online wax scraper device, the eccentric adjustable oil pipe online wax scraper device The combination of mechanical wax scraping and steam cleaning can make the tubing meet the downhole standard at one time without secondary pollution

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