IMPROVED DOWNHOLE SCRAPING AND/OR BRUSHING TOOL AND RELATED METHODS

摘要

AN IMPROVED AND ENHANCED SPRING LOADED DOWNHOLE TOOL FOR CLEANING WELL CASING BORES COMPRISING A MANDREL (10), AT LEAST A FIRST INSERT (2) HAVING A PASSAGEWAY THERETHROUGH, AND AT LEAST A SECOND INSERT (4), WHEREIN BOTH THE FIRST INSERT AND THE SECOND INSERT ARE SELECTED FROM AT LEAST ONE OF A SPRING LOADED SCRAPER INSERT AND AT LEAST ONE WIRE BRUSH INSERT, AND FURTHER WHEREIN THE FIRST INSERT AND THE SECOND INSERT ARE SLIDINGLY RECEIVED WITHIN A SLOT ON A FIRST MOUNTING PORTION (50) ON THE MANDREL AND A SLOT ON A SECOND MOUNTING PORTION (16) ON THE MANDREL, FROM THE OUTERMOST RESPECTIVE ENDS, AND WHEREIN THE FIRST INSERT IS SECURED BY A FIRST RETAINING SLEEVE (5) AND THE SECOND INSERT IS SECURED BY A SECOND RETAINING SLEEVE (30). ALSO DISCLOSED IS A UNIQUE METHOD FOR CLEANING A SECTION OF CASING WITH A DOWNHOLE TOOL, AS HEREIN DISCLOSED.