Staggered inverted trough type drill rod inner wall sludge scraper

Abstract

The invention discloses a staggered inverted trough type drill rod inner wall sludge scraper. The sludge scraper is characterized by comprising a core tube, scraper blade sets and a floating barrel; the core tube is a hollow vertical tube, the scraper blade sets are composed of scraper blades circumferentially distributed around the core tube at equal intervals, at least two layers of scraper blade sets are distributed vertically in the axial direction of the core tube, the scraper blades of the adjacent scraper blade sets are distributed in a staggered mode, the scraper blades are in left-and-right-symmetric inverted trough shapes with downward openings in the side-looking process, and the inner edges of the scraper blades on the symmetric left portions and right portions are connected with the outer wall of the core tube through supporting arms; upward-seen inner edges and outer edges of the scraper blade sets are concentric circles, the floating barrel is a container with a bottom and an upper opening, the upper opening of the floating barrel is connected with a lower opening of the core tube through threads, an upper opening of the core tube is connected with a plug through a thread, drilling fluid can converge into flow to flow downwards more easily through the inverted trough type scraper blades to pass through drill rod joints more easily, and the drilling fluid is not blocked.

Description

technical field [0001] The invention relates to a tool for cleaning the inner wall of a drill pipe for oil drilling, in particular to a staggered inverted groove type mud scraper for the inner wall of a drill pipe. Background technique [0002] Drilling is an essential link in oil extraction engineering. Driven by technological progress, the drilling depth continues to increase, and the number of trips that follow is also becoming more and more frequent, such as replacing the drill bit, replacing the downhole Tools, changing drilling tools, short tripping, etc. During the tripping process, a lot of drilling fluid will always adhere to the inner and outer walls of the drill pipe more or less, which not only causes the waste of drilling fluid, but also pollutes the environment. People slip and fall and are injured, and the remaining drilling fluid on the inner wall of the drilling tool is likely to cause the water eye of the drilling tool to freeze. These technical problems s...

AI Technical Summary

Problems solved by technology

During the tripping process, a lot of drilling fluid will always adhere to the inner and outer walls of the drill pipe more or less, which not only causes the waste of drilling fluid, but also pollutes the environment. People slipped and injured, and the remaining drilling fluid on the inner wall of the drilling tool is likely to cause the water hole of the drilling tool to freeze. These technical problems still need to be solved technically

Images