Patent ID: 6607607
Filing Date: 2003-08-19
Classification: B08B,E21B

Abstract:
A method for cleaning fill from a borehole, comprising:disturbing particulate solids of the fill while running in hole (RIH) with a coiled tubing assembly circulating at least one cleanout fluid through a nozzle having a jetting action directed downhole; creating particle entrainment by pulling out of the hole (POOH) while circulating at least one cleanout fluid through a nozzle having a jetting action directed uphole; and controlling a pump rate of cleanout fluid and a coiled tubing assembly POOH rate according to at least one of a selected pump rate regime and a selected POOH rate regime such that substantially all particulate solids of the fill are maintained uphole of an end of the coiled tubing assembly during POOH.