Device and installation for the cleaning of drains, particularly in a petroleum production well

摘要

The invention relates to a device for cleaning a horizontal drain (10) adapted for being disposed at the end of two concentric pipe columns (14, 16). This device includes a body (20) provided with at least one cleaning fluid outlet port (38) and with at least one return port (30) for the fluid loaded with particles. The outlet ports are directed towards the wall of the drain and located at a predetermined distance from the return ports. The invention further relates to an installation for the cleaning of horizontal drains and to a method for implementing the installation.