Ultra-Low Pressure Wellbore Cleanouts Using Micro-Vacuuming Technology and Concentric Coiled Tubing

In instances of ultra-low bottom hole pressure (BHP) where the results of conventional cleanout methodologies range from inefficient to ineffective, wellbore vacuuming technology has proven to be a reliable alternative. Technology using concentric coil-in-coil tubing (CCT) design was developed in 1995 and is being used as an effective method to remove both unwanted liquids and solids from wells where formation pressure is prohibitively low for conventional cleanout techniques.