An image rendering method for masking a visual defect is disclosed. The system enables the effective sealing of the production casing volume from the surface casing volume such that any gases leaking from either volume can be independently released from independent valves. The apparatus also includes a wireless handheld master control module having a transmitting antenna. An electronic controller is in electronic communication with the winding device. The adsorbents may be used to adsorb both carbon dioxide and hydrogen sulfide, or may be used as a guard bed upstream of a separate carbon dioxide adsorbent.