Patent ID: 6982008

Claim:
A method for cleaning fill from a wellbore, comprising: disturbing particulate solids of the fill while running in hole (RIH) with a coiled tubing assembly by circulating a cleanout fluid through a nozzle adapted to provide an angled jetting action; creating particle entrainment to form a slurry of particulate fill and cleanout fluid, by pulling out of the hole (POOH) while circulating the cleanout fluid through the nozzle; controlling a pump rate of the cleanout fluid and POOH rate such that substantially all particulate solids of the fill are maintained uphole of the coiled tubing assembly during POOH, while circulating the cleanout fluid at a flow rate that is less than a flow rate required to maintain the particulate solids in continuous suspension in the slurry in the wellbore; and re-entraining the particulate solids that have fallen out of suspension, so that substantially all particulate solids are maintained uphole of the nozzle.