DEVICE FOR EMPTYING A WIRELINE OPERATED WELLBORE DEBRIS CLEAN OUT TOOL AND A METHOD FOR USING THE DEVICE

• Main Authors: Bård Martin Tinnen, Espen Osaland, Lasse Haugland
• Format: Patent
• Language: English
• Published: 10.05.2023
• Subjects: EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS

Circulation unit (2) for connecting to a lubricator (160), said lubricator (160) is suitable for housing a wireline operated tool string (200) for collecting debris within a petroleum well, said circulation unit (2) comprises a house (29) provided with an upper lubricator connection (165) and with at least one lower internal seal member (23), said seal member (23) is adapted to seal against an outer surface of the tool string (200), and the circulation unit (2) is provided with an outlet (30) above the seal member (23), said outlet (30) being connected to a reservoir (3; 300). The circulation unit (2) is provided with a lower lubricator connection (166); the house (29), the up per lubricator connection (165) and the lower lubricator connection (166) form a through passage for the tool string (200); and the upper lubrication connection (165) and the lower lubrication connection (166) are adapted for connection to a pressurized lubricator (160). The tool string (200) comprises a wellbore cleanout tool (230) provided with filling means and said wellbore cleanout tool (230) comprises an outlet (4) for unloading collected debris in a lubricator assembly (16) comprising the lubricator (160) and the circulation unit (2). A method for unloading the filled wellbore cleanout tool (230) in the circulation unit (2) is described as well.