Abstract: A method and system for cleaning well liners employing a non-rotating tubing string attached to a hydraulic jet carrier assembly is disclosed. The assembly has a plurality of jet nozzles spaced along its length, each of said nozzles expelling a stream of fluid under pressure against the liner with a force which has an equal and opposite reactive force. The nozzles are oriented along the carrier such that the reactive force for each jet is directionally offset with respect to the central axis of the carrier, thereby creating a twisting moment tending to rotate the carrier about its central axis. During the cleaning operation, the bottom hole differential pressure of the fluid supplied to the jet carrier is varied to rotationally oscillate the carrier as it is moved vertically within the well bore to increase the coverage of the fluid streams on the liner.

Abstract: A method for cleaning well liners employing a jet carrier assembly having a plurality of jet nozzles spaced along its length each of said nozzles expelling a stream of fluid against the liner. The jet carrier is rotated at a specified rotational speed and moved at a maximum vertical speed which will produce streams of fluid having the energy needed to remove the foreign matter from any size liner with any sized slots or perforations and which will clean each point on the liner at least once.