Device for Emptying a Wireline Operated Wellbore Debris Clean Out Tool and a Method for Using the Device

Abstract

A circulation unit for connecting to a lubricator suitable for housing a wireline operated tool string for collecting debris within a petroleum well is described. The circulation unit comprises a house with an upper lubricator connection and at least one lower internal seal member adapted to seal against an outer surface of the tool string. The circulation unit has an outlet above the seal member, the outlet being connected to a reservoir. The circulation unit has a lower lubricator connection. The house, upper lubricator connection and lower lubricator connection form a through passage for the tool string. The upper lubrication connection and lower lubrication connection are adapted for connection to a pressurized lubricator. The tool string includes a wellbore cleanout tool with filling means. The wellbore cleanout tool comprises an outlet for unloading collected debris in a lubricator assembly comprising the lubricator and the circulation unit. The method for unloading the filled wellbore cleanout tool in the circulation unit is also described.

Dependencies are inferred from the claim text.